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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:58,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:58,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:58,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:58,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:58,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:58,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:58,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:58,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:58,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:58,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:58,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:58,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:58,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:58,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:58,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:58,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:58,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:58,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:58,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:58,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:58,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:58,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:58,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:58,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:58,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:58,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:58,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:58,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:58,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:58,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:58,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:58,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:58,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:58,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:58,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:58,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:58,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:58,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:58,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:58,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:58,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:30:58,520 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:58,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:58,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:58,520 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:58,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:58,521 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:58,521 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:58,522 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:58,522 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:58,522 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:58,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:58,523 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:58,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:58,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:58,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:58,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:58,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:58,524 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:58,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:58,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:58,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:58,525 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:58,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:58,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:58,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:58,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:58,526 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:58,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:58,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:58,527 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:58,555 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:58,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:58,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:58,570 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:58,570 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:58,571 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product54.cil.c [2019-09-20 13:30:58,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68591539e/5c7effd5e80a4d01824b142a7868c6c9/FLAGb3650a61b [2019-09-20 13:30:59,164 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:59,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product54.cil.c [2019-09-20 13:30:59,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68591539e/5c7effd5e80a4d01824b142a7868c6c9/FLAGb3650a61b [2019-09-20 13:30:59,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68591539e/5c7effd5e80a4d01824b142a7868c6c9 [2019-09-20 13:30:59,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:59,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:59,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:59,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:59,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:59,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:59" (1/1) ... [2019-09-20 13:30:59,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d65d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:59, skipping insertion in model container [2019-09-20 13:30:59,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:59" (1/1) ... [2019-09-20 13:30:59,527 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:59,580 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:00,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:00,024 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:00,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:00,164 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:00,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:00 WrapperNode [2019-09-20 13:31:00,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:00,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:00,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:00,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:00,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:00" (1/1) ... [2019-09-20 13:31:00,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:00" (1/1) ... [2019-09-20 13:31:00,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:00" (1/1) ... [2019-09-20 13:31:00,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:00" (1/1) ... [2019-09-20 13:31:00,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:00" (1/1) ... [2019-09-20 13:31:00,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:00" (1/1) ... [2019-09-20 13:31:00,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:00" (1/1) ... [2019-09-20 13:31:00,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:00,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:00,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:00,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:00,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:00" (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 [2019-09-20 13:31:00,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:00,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:00,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:00,340 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:00,340 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:00,340 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:00,340 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:00,340 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:31:00,341 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:00,341 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:00,341 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:00,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:00,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:00,343 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:00,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:00,344 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:31:00,344 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:31:00,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-09-20 13:31:00,344 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:00,344 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:00,344 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:00,345 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:00,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:00,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:00,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:00,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:00,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:00,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:00,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:00,346 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:00,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:31:00,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:00,348 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:00,348 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:00,348 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:00,349 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:31:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:31:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-09-20 13:31:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:31:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:31:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:00,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:01,454 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:01,455 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:01,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:01 BoogieIcfgContainer [2019-09-20 13:31:01,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:01,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:01,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:01,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:01,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:59" (1/3) ... [2019-09-20 13:31:01,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48aeb540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:01, skipping insertion in model container [2019-09-20 13:31:01,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:00" (2/3) ... [2019-09-20 13:31:01,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48aeb540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:01, skipping insertion in model container [2019-09-20 13:31:01,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:01" (3/3) ... [2019-09-20 13:31:01,464 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product54.cil.c [2019-09-20 13:31:01,474 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:01,482 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:01,498 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:01,521 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:01,522 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:01,522 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:01,522 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:01,523 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:01,523 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:01,523 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:01,523 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2019-09-20 13:31:01,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-20 13:31:01,556 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:01,557 INFO L407 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] [2019-09-20 13:31:01,560 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:01,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:01,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1513268006, now seen corresponding path program 1 times [2019-09-20 13:31:01,568 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:01,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:01,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:01,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:01,621 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:01,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:01,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:01,883 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:01,892 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:01,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:01,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:01,907 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 2 states. [2019-09-20 13:31:01,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:01,937 INFO L93 Difference]: Finished difference Result 161 states and 188 transitions. [2019-09-20 13:31:01,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:01,938 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-09-20 13:31:01,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:01,951 INFO L225 Difference]: With dead ends: 161 [2019-09-20 13:31:01,951 INFO L226 Difference]: Without dead ends: 150 [2019-09-20 13:31:01,953 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:01,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-09-20 13:31:02,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2019-09-20 13:31:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-09-20 13:31:02,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2019-09-20 13:31:02,007 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 46 [2019-09-20 13:31:02,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:02,008 INFO L475 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2019-09-20 13:31:02,008 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:02,008 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2019-09-20 13:31:02,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-20 13:31:02,011 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:02,012 INFO L407 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] [2019-09-20 13:31:02,012 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:02,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:02,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1135126254, now seen corresponding path program 1 times [2019-09-20 13:31:02,013 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:02,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:02,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:02,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:02,016 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:02,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:02,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:02,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:02,167 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:02,170 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:02,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:02,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:02,171 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 3 states. [2019-09-20 13:31:02,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:02,203 INFO L93 Difference]: Finished difference Result 141 states and 164 transitions. [2019-09-20 13:31:02,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:02,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-09-20 13:31:02,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:02,206 INFO L225 Difference]: With dead ends: 141 [2019-09-20 13:31:02,206 INFO L226 Difference]: Without dead ends: 141 [2019-09-20 13:31:02,207 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:02,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-09-20 13:31:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-09-20 13:31:02,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-09-20 13:31:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 164 transitions. [2019-09-20 13:31:02,223 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 164 transitions. Word has length 47 [2019-09-20 13:31:02,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:02,223 INFO L475 AbstractCegarLoop]: Abstraction has 141 states and 164 transitions. [2019-09-20 13:31:02,223 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 164 transitions. [2019-09-20 13:31:02,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:31:02,226 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:02,226 INFO L407 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] [2019-09-20 13:31:02,226 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:02,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:02,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1031816634, now seen corresponding path program 1 times [2019-09-20 13:31:02,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:02,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:02,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:02,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:02,230 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:02,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:02,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:02,347 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:02,347 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:02,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:02,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:02,348 INFO L87 Difference]: Start difference. First operand 141 states and 164 transitions. Second operand 7 states. [2019-09-20 13:31:02,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:02,754 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2019-09-20 13:31:02,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:02,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2019-09-20 13:31:02,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:02,758 INFO L225 Difference]: With dead ends: 141 [2019-09-20 13:31:02,758 INFO L226 Difference]: Without dead ends: 141 [2019-09-20 13:31:02,759 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:31:02,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-09-20 13:31:02,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-09-20 13:31:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-09-20 13:31:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 163 transitions. [2019-09-20 13:31:02,785 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 163 transitions. Word has length 52 [2019-09-20 13:31:02,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:02,786 INFO L475 AbstractCegarLoop]: Abstraction has 141 states and 163 transitions. [2019-09-20 13:31:02,786 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 163 transitions. [2019-09-20 13:31:02,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:31:02,796 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:02,797 INFO L407 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] [2019-09-20 13:31:02,797 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:02,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:02,798 INFO L82 PathProgramCache]: Analyzing trace with hash 276958236, now seen corresponding path program 1 times [2019-09-20 13:31:02,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:02,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:02,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:02,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:02,804 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:02,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:02,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:31:02,989 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:02,990 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:31:02,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:31:02,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:31:02,990 INFO L87 Difference]: Start difference. First operand 141 states and 163 transitions. Second operand 5 states. [2019-09-20 13:31:03,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:03,536 INFO L93 Difference]: Finished difference Result 248 states and 284 transitions. [2019-09-20 13:31:03,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:03,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2019-09-20 13:31:03,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:03,545 INFO L225 Difference]: With dead ends: 248 [2019-09-20 13:31:03,545 INFO L226 Difference]: Without dead ends: 248 [2019-09-20 13:31:03,546 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:03,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2019-09-20 13:31:03,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 229. [2019-09-20 13:31:03,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2019-09-20 13:31:03,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 258 transitions. [2019-09-20 13:31:03,586 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 258 transitions. Word has length 70 [2019-09-20 13:31:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:03,587 INFO L475 AbstractCegarLoop]: Abstraction has 229 states and 258 transitions. [2019-09-20 13:31:03,587 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:31:03,587 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 258 transitions. [2019-09-20 13:31:03,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-20 13:31:03,590 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:03,590 INFO L407 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] [2019-09-20 13:31:03,590 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:03,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:03,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1283615481, now seen corresponding path program 1 times [2019-09-20 13:31:03,591 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:03,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:03,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:03,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:03,594 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:03,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:03,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:03,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-20 13:31:03,724 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:03,724 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-20 13:31:03,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-20 13:31:03,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:31:03,725 INFO L87 Difference]: Start difference. First operand 229 states and 258 transitions. Second operand 10 states. [2019-09-20 13:31:04,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:04,376 INFO L93 Difference]: Finished difference Result 530 states and 623 transitions. [2019-09-20 13:31:04,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-20 13:31:04,376 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2019-09-20 13:31:04,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:04,382 INFO L225 Difference]: With dead ends: 530 [2019-09-20 13:31:04,382 INFO L226 Difference]: Without dead ends: 530 [2019-09-20 13:31:04,382 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:31:04,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2019-09-20 13:31:04,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 520. [2019-09-20 13:31:04,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2019-09-20 13:31:04,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 606 transitions. [2019-09-20 13:31:04,414 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 606 transitions. Word has length 84 [2019-09-20 13:31:04,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:04,414 INFO L475 AbstractCegarLoop]: Abstraction has 520 states and 606 transitions. [2019-09-20 13:31:04,415 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-20 13:31:04,415 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 606 transitions. [2019-09-20 13:31:04,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-09-20 13:31:04,420 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:04,420 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:04,422 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:04,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:04,423 INFO L82 PathProgramCache]: Analyzing trace with hash -836442027, now seen corresponding path program 1 times [2019-09-20 13:31:04,423 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:04,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:04,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:04,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:04,429 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-20 13:31:04,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:04,576 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:04,577 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 142 with the following transitions: [2019-09-20 13:31:04,579 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [54], [57], [59], [62], [68], [70], [71], [75], [78], [113], [129], [132], [134], [135], [138], [140], [143], [150], [153], [155], [164], [168], [172], [175], [180], [186], [188], [194], [197], [218], [219], [220], [222], [225], [229], [230], [231], [232], [235], [238], [242], [248], [275], [276], [279], [283], [286], [289], [291], [294], [304], [307], [311], [312], [315], [330], [333], [334], [335], [336], [359], [361], [362], [363], [364], [429], [430], [440], [448], [449], [450], [451], [452], [454], [455], [456], [457], [458], [459], [460], [461], [462], [496], [497], [498], [499], [502], [503], [504], [505], [510], [511], [514], [515], [516], [517], [518], [519], [520], [521], [526], [527], [528], [529], [540], [541], [544], [546], [547], [552], [553], [554] [2019-09-20 13:31:04,619 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:04,619 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:04,689 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:04,691 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 68 root evaluator evaluations with a maximum evaluation depth of 0. Performed 68 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 126 variables. [2019-09-20 13:31:04,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:04,695 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:04,745 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:04,746 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:04,751 INFO L420 sIntCurrentIteration]: We unified 140 AI predicates to 140 [2019-09-20 13:31:04,751 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:04,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:04,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-09-20 13:31:04,753 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:04,753 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:04,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:04,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:04,754 INFO L87 Difference]: Start difference. First operand 520 states and 606 transitions. Second operand 2 states. [2019-09-20 13:31:04,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:04,755 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:04,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:04,755 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 141 [2019-09-20 13:31:04,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:04,755 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:04,755 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:04,756 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:04,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:04,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:04,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:04,756 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 141 [2019-09-20 13:31:04,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:04,757 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:04,757 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:04,757 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:04,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:04,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:04 BoogieIcfgContainer [2019-09-20 13:31:04,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:04,772 INFO L168 Benchmark]: Toolchain (without parser) took 5257.64 ms. Allocated memory was 137.9 MB in the beginning and 268.4 MB in the end (delta: 130.5 MB). Free memory was 84.1 MB in the beginning and 151.6 MB in the end (delta: -67.4 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:04,773 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-09-20 13:31:04,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.69 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 83.9 MB in the beginning and 162.3 MB in the end (delta: -78.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:04,777 INFO L168 Benchmark]: Boogie Preprocessor took 82.41 ms. Allocated memory is still 198.2 MB. Free memory was 162.3 MB in the beginning and 158.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:04,778 INFO L168 Benchmark]: RCFGBuilder took 1208.35 ms. Allocated memory was 198.2 MB in the beginning and 219.2 MB in the end (delta: 21.0 MB). Free memory was 158.5 MB in the beginning and 186.5 MB in the end (delta: -28.0 MB). Peak memory consumption was 93.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:04,779 INFO L168 Benchmark]: TraceAbstraction took 3310.10 ms. Allocated memory was 219.2 MB in the beginning and 268.4 MB in the end (delta: 49.3 MB). Free memory was 186.5 MB in the beginning and 151.6 MB in the end (delta: 35.0 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:04,785 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 652.69 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 83.9 MB in the beginning and 162.3 MB in the end (delta: -78.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.41 ms. Allocated memory is still 198.2 MB. Free memory was 162.3 MB in the beginning and 158.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1208.35 ms. Allocated memory was 198.2 MB in the beginning and 219.2 MB in the end (delta: 21.0 MB). Free memory was 158.5 MB in the beginning and 186.5 MB in the end (delta: -28.0 MB). Peak memory consumption was 93.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3310.10 ms. Allocated memory was 219.2 MB in the beginning and 268.4 MB in the end (delta: 49.3 MB). Free memory was 186.5 MB in the beginning and 151.6 MB in the end (delta: 35.0 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 953]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 249 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 903 SDtfs, 734 SDslu, 1945 SDs, 0 SdLazy, 794 SolverSat, 262 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=520occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8642857142857143 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 29 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 440 NumberOfCodeBlocks, 440 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 434 ConstructedInterpolants, 0 QuantifiedInterpolants, 56923 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 27/29 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...