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_spec5_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:37,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:37,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:37,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:37,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:37,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:37,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:37,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:37,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:37,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:37,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:37,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:37,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:37,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:37,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:37,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:37,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:37,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:37,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:37,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:37,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:37,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:37,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:37,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:37,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:37,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:37,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:37,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:37,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:37,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:37,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:37,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:37,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:37,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:37,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:37,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:37,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:37,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:37,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:37,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:37,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:37,376 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 13:31:37,397 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:37,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:37,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:37,399 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:37,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:37,400 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:37,400 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:37,400 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:37,401 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:37,401 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:37,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:37,403 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:37,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:37,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:37,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:37,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:37,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:37,405 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:37,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:37,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:37,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:37,406 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:37,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:37,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:37,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:37,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:37,407 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:37,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:37,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:37,408 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:37,464 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:37,485 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:37,489 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:37,491 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:37,492 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:37,493 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2019-09-20 13:31:37,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd9c5cb45/9740baddd0d04bdb9d6529bfcc384d46/FLAGe4827d932 [2019-09-20 13:31:38,088 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:38,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2019-09-20 13:31:38,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd9c5cb45/9740baddd0d04bdb9d6529bfcc384d46/FLAGe4827d932 [2019-09-20 13:31:38,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd9c5cb45/9740baddd0d04bdb9d6529bfcc384d46 [2019-09-20 13:31:38,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:38,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:38,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:38,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:38,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:38,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:38" (1/1) ... [2019-09-20 13:31:38,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425f21cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:38, skipping insertion in model container [2019-09-20 13:31:38,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:38" (1/1) ... [2019-09-20 13:31:38,440 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:38,492 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:38,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:38,938 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:39,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:39,128 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:39,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:39 WrapperNode [2019-09-20 13:31:39,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:39,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:39,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:39,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:39,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:39" (1/1) ... [2019-09-20 13:31:39,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:39" (1/1) ... [2019-09-20 13:31:39,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:39" (1/1) ... [2019-09-20 13:31:39,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:39" (1/1) ... [2019-09-20 13:31:39,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:39" (1/1) ... [2019-09-20 13:31:39,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:39" (1/1) ... [2019-09-20 13:31:39,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:39" (1/1) ... [2019-09-20 13:31:39,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:39,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:39,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:39,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:39,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:39,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:39,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:39,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:39,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:39,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:39,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:39,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:39,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:39,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:39,266 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:39,266 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:39,266 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:39,267 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:39,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:39,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:39,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:39,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:39,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:31:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:39,270 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:39,270 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:39,270 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:39,270 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:39,270 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:39,270 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:39,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:31:39,271 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:31:39,271 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:31:39,271 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:39,271 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:39,271 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:39,272 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:39,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:39,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:39,274 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:39,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:39,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:39,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:39,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:39,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:39,275 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:39,275 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:39,275 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:39,275 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:39,275 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:39,275 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:39,276 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:39,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:39,276 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:39,276 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:39,276 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:39,276 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:39,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:39,278 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:39,278 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:39,278 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:39,278 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:39,281 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:31:39,281 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:31:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:31:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:31:39,283 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:39,283 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:39,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:39,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:39,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:40,458 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:40,458 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:40,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:40 BoogieIcfgContainer [2019-09-20 13:31:40,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:40,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:40,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:40,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:40,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:38" (1/3) ... [2019-09-20 13:31:40,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747b47fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:40, skipping insertion in model container [2019-09-20 13:31:40,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:39" (2/3) ... [2019-09-20 13:31:40,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747b47fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:40, skipping insertion in model container [2019-09-20 13:31:40,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:40" (3/3) ... [2019-09-20 13:31:40,472 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2019-09-20 13:31:40,483 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:40,494 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:40,512 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:40,541 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:40,541 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:40,541 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:40,541 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:40,542 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:40,542 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:40,542 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:40,542 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:40,560 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2019-09-20 13:31:40,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:31:40,574 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:40,574 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-20 13:31:40,577 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:40,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:40,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1089631799, now seen corresponding path program 1 times [2019-09-20 13:31:40,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:40,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:40,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:40,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:40,647 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:41,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:41,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:41,002 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:41,018 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:41,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:41,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:41,037 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 2 states. [2019-09-20 13:31:41,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:41,066 INFO L93 Difference]: Finished difference Result 159 states and 186 transitions. [2019-09-20 13:31:41,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:41,067 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:31:41,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:41,081 INFO L225 Difference]: With dead ends: 159 [2019-09-20 13:31:41,081 INFO L226 Difference]: Without dead ends: 148 [2019-09-20 13:31:41,083 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 13:31:41,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-09-20 13:31:41,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2019-09-20 13:31:41,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-09-20 13:31:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions. [2019-09-20 13:31:41,138 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 59 [2019-09-20 13:31:41,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:41,139 INFO L475 AbstractCegarLoop]: Abstraction has 148 states and 174 transitions. [2019-09-20 13:31:41,139 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:41,139 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions. [2019-09-20 13:31:41,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:31:41,143 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:41,143 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-20 13:31:41,144 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:41,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:41,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1975382983, now seen corresponding path program 1 times [2019-09-20 13:31:41,144 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:41,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:41,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,148 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:41,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:41,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:41,250 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:41,253 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:41,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:41,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:41,254 INFO L87 Difference]: Start difference. First operand 148 states and 174 transitions. Second operand 3 states. [2019-09-20 13:31:41,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:41,284 INFO L93 Difference]: Finished difference Result 139 states and 162 transitions. [2019-09-20 13:31:41,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:41,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:31:41,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:41,292 INFO L225 Difference]: With dead ends: 139 [2019-09-20 13:31:41,292 INFO L226 Difference]: Without dead ends: 139 [2019-09-20 13:31:41,293 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 13:31:41,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-09-20 13:31:41,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-09-20 13:31:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-09-20 13:31:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2019-09-20 13:31:41,315 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 60 [2019-09-20 13:31:41,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:41,315 INFO L475 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2019-09-20 13:31:41,315 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:41,316 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2019-09-20 13:31:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:31:41,318 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:41,318 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-20 13:31:41,318 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:41,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:41,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1007889166, now seen corresponding path program 1 times [2019-09-20 13:31:41,319 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:41,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:41,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,322 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:41,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:41,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:41,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:41,562 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:41,563 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:41,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:41,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:41,565 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand 7 states. [2019-09-20 13:31:42,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:42,160 INFO L93 Difference]: Finished difference Result 306 states and 368 transitions. [2019-09-20 13:31:42,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:42,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:31:42,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:42,164 INFO L225 Difference]: With dead ends: 306 [2019-09-20 13:31:42,164 INFO L226 Difference]: Without dead ends: 306 [2019-09-20 13:31:42,164 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 13:31:42,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2019-09-20 13:31:42,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 294. [2019-09-20 13:31:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-09-20 13:31:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 356 transitions. [2019-09-20 13:31:42,196 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 356 transitions. Word has length 65 [2019-09-20 13:31:42,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:42,197 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 356 transitions. [2019-09-20 13:31:42,197 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:42,197 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 356 transitions. [2019-09-20 13:31:42,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:31:42,200 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:42,200 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-20 13:31:42,200 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:42,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:42,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1025318737, now seen corresponding path program 1 times [2019-09-20 13:31:42,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:42,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:42,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:42,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:42,204 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:31:42,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:42,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:42,394 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:42,395 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:42,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:42,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:42,396 INFO L87 Difference]: Start difference. First operand 294 states and 356 transitions. Second operand 7 states. [2019-09-20 13:31:43,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:43,188 INFO L93 Difference]: Finished difference Result 478 states and 600 transitions. [2019-09-20 13:31:43,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:43,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:31:43,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:43,193 INFO L225 Difference]: With dead ends: 478 [2019-09-20 13:31:43,193 INFO L226 Difference]: Without dead ends: 478 [2019-09-20 13:31:43,194 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:31:43,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2019-09-20 13:31:43,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 424. [2019-09-20 13:31:43,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2019-09-20 13:31:43,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 511 transitions. [2019-09-20 13:31:43,239 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 511 transitions. Word has length 70 [2019-09-20 13:31:43,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:43,240 INFO L475 AbstractCegarLoop]: Abstraction has 424 states and 511 transitions. [2019-09-20 13:31:43,240 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:43,241 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 511 transitions. [2019-09-20 13:31:43,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:31:43,249 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:43,249 INFO L407 BasicCegarLoop]: trace histogram [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 13:31:43,250 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:43,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:43,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2085443903, now seen corresponding path program 1 times [2019-09-20 13:31:43,251 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:43,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:43,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,254 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:43,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:43,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:43,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:43,402 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:43,403 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:43,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:43,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:43,403 INFO L87 Difference]: Start difference. First operand 424 states and 511 transitions. Second operand 6 states. [2019-09-20 13:31:43,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:43,444 INFO L93 Difference]: Finished difference Result 434 states and 521 transitions. [2019-09-20 13:31:43,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:43,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-09-20 13:31:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:43,449 INFO L225 Difference]: With dead ends: 434 [2019-09-20 13:31:43,450 INFO L226 Difference]: Without dead ends: 434 [2019-09-20 13:31:43,451 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:43,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2019-09-20 13:31:43,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2019-09-20 13:31:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-09-20 13:31:43,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2019-09-20 13:31:43,489 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 93 [2019-09-20 13:31:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:43,491 INFO L475 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2019-09-20 13:31:43,491 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:43,491 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2019-09-20 13:31:43,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:31:43,494 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:43,495 INFO L407 BasicCegarLoop]: trace histogram [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 13:31:43,495 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:43,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:43,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1383844029, now seen corresponding path program 1 times [2019-09-20 13:31:43,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:43,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:43,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,503 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:43,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:43,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:31:43,615 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:43,617 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:31:43,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:31:43,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:43,619 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 8 states. [2019-09-20 13:31:43,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:43,653 INFO L93 Difference]: Finished difference Result 448 states and 535 transitions. [2019-09-20 13:31:43,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:31:43,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-09-20 13:31:43,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:43,658 INFO L225 Difference]: With dead ends: 448 [2019-09-20 13:31:43,658 INFO L226 Difference]: Without dead ends: 448 [2019-09-20 13:31:43,659 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:43,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-09-20 13:31:43,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 442. [2019-09-20 13:31:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2019-09-20 13:31:43,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 529 transitions. [2019-09-20 13:31:43,685 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 529 transitions. Word has length 93 [2019-09-20 13:31:43,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:43,686 INFO L475 AbstractCegarLoop]: Abstraction has 442 states and 529 transitions. [2019-09-20 13:31:43,686 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:31:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 529 transitions. [2019-09-20 13:31:43,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:31:43,691 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:43,691 INFO L407 BasicCegarLoop]: trace histogram [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 13:31:43,692 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:43,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:43,692 INFO L82 PathProgramCache]: Analyzing trace with hash 341636868, now seen corresponding path program 1 times [2019-09-20 13:31:43,692 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:43,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:43,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,696 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:43,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:43,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:43,807 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:43,808 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:43,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:43,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:43,809 INFO L87 Difference]: Start difference. First operand 442 states and 529 transitions. Second operand 4 states. [2019-09-20 13:31:44,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:44,071 INFO L93 Difference]: Finished difference Result 1002 states and 1245 transitions. [2019-09-20 13:31:44,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:44,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-09-20 13:31:44,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:44,077 INFO L225 Difference]: With dead ends: 1002 [2019-09-20 13:31:44,078 INFO L226 Difference]: Without dead ends: 1002 [2019-09-20 13:31:44,078 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:44,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2019-09-20 13:31:44,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 985. [2019-09-20 13:31:44,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2019-09-20 13:31:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1208 transitions. [2019-09-20 13:31:44,128 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1208 transitions. Word has length 93 [2019-09-20 13:31:44,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:44,129 INFO L475 AbstractCegarLoop]: Abstraction has 985 states and 1208 transitions. [2019-09-20 13:31:44,129 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1208 transitions. [2019-09-20 13:31:44,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:31:44,131 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:44,132 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:44,132 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:44,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:44,132 INFO L82 PathProgramCache]: Analyzing trace with hash -643321942, now seen corresponding path program 1 times [2019-09-20 13:31:44,132 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:44,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:44,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:44,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:44,135 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:44,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:44,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:31:44,317 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:44,317 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:31:44,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:31:44,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:31:44,318 INFO L87 Difference]: Start difference. First operand 985 states and 1208 transitions. Second operand 9 states. [2019-09-20 13:31:45,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:45,591 INFO L93 Difference]: Finished difference Result 1929 states and 2367 transitions. [2019-09-20 13:31:45,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:31:45,591 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2019-09-20 13:31:45,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:45,602 INFO L225 Difference]: With dead ends: 1929 [2019-09-20 13:31:45,603 INFO L226 Difference]: Without dead ends: 1929 [2019-09-20 13:31:45,603 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:31:45,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2019-09-20 13:31:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1696. [2019-09-20 13:31:45,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1696 states. [2019-09-20 13:31:45,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2047 transitions. [2019-09-20 13:31:45,691 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2047 transitions. Word has length 97 [2019-09-20 13:31:45,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:45,692 INFO L475 AbstractCegarLoop]: Abstraction has 1696 states and 2047 transitions. [2019-09-20 13:31:45,692 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:31:45,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2047 transitions. [2019-09-20 13:31:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-09-20 13:31:45,698 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:45,698 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:45,698 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:45,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:45,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1477147143, now seen corresponding path program 1 times [2019-09-20 13:31:45,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:45,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:45,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:45,703 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:31:45,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:45,925 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:45,926 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 160 with the following transitions: [2019-09-20 13:31:45,931 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [94], [97], [101], [102], [103], [119], [123], [124], [125], [128], [130], [136], [140], [143], [144], [145], [154], [158], [162], [165], [168], [170], [176], [178], [184], [190], [198], [199], [209], [210], [211], [212], [213], [215], [220], [222], [223], [227], [230], [234], [240], [271], [275], [278], [281], [283], [286], [293], [296], [299], [303], [304], [307], [308], [309], [311], [312], [313], [315], [318], [320], [323], [326], [335], [337], [338], [339], [433], [434], [444], [452], [453], [454], [455], [456], [457], [458], [459], [460], [494], [495], [496], [497], [500], [501], [502], [503], [504], [505], [512], [513], [516], [517], [518], [519], [520], [521], [522], [523], [524], [525], [530], [531], [532], [533], [536], [537], [538], [539], [540], [541], [542], [543], [544], [548], [549], [550], [558], [559], [560] [2019-09-20 13:31:45,987 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:45,987 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:46,073 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:46,074 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-20 13:31:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:46,079 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:46,152 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:46,152 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:46,157 INFO L420 sIntCurrentIteration]: We unified 158 AI predicates to 158 [2019-09-20 13:31:46,157 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:46,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:46,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:31:46,159 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:46,159 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:46,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:46,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:46,160 INFO L87 Difference]: Start difference. First operand 1696 states and 2047 transitions. Second operand 2 states. [2019-09-20 13:31:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:46,161 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:46,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:46,161 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 159 [2019-09-20 13:31:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:46,161 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:46,161 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:46,162 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 158 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 13:31:46,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:46,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:46,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:46,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:46,163 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 159 [2019-09-20 13:31:46,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:46,163 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:46,163 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:46,163 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:46,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:46 BoogieIcfgContainer [2019-09-20 13:31:46,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:46,171 INFO L168 Benchmark]: Toolchain (without parser) took 7746.64 ms. Allocated memory was 132.1 MB in the beginning and 330.8 MB in the end (delta: 198.7 MB). Free memory was 87.0 MB in the beginning and 236.8 MB in the end (delta: -149.7 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:46,172 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 132.1 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:31:46,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.36 ms. Allocated memory was 132.1 MB in the beginning and 200.3 MB in the end (delta: 68.2 MB). Free memory was 86.8 MB in the beginning and 162.0 MB in the end (delta: -75.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:46,174 INFO L168 Benchmark]: Boogie Preprocessor took 83.85 ms. Allocated memory is still 200.3 MB. Free memory was 162.0 MB in the beginning and 157.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:46,176 INFO L168 Benchmark]: RCFGBuilder took 1245.80 ms. Allocated memory was 200.3 MB in the beginning and 222.8 MB in the end (delta: 22.5 MB). Free memory was 157.5 MB in the beginning and 183.4 MB in the end (delta: -25.9 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:46,177 INFO L168 Benchmark]: TraceAbstraction took 5706.55 ms. Allocated memory was 222.8 MB in the beginning and 330.8 MB in the end (delta: 108.0 MB). Free memory was 183.4 MB in the beginning and 236.8 MB in the end (delta: -53.3 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:46,181 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 132.1 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 705.36 ms. Allocated memory was 132.1 MB in the beginning and 200.3 MB in the end (delta: 68.2 MB). Free memory was 86.8 MB in the beginning and 162.0 MB in the end (delta: -75.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.85 ms. Allocated memory is still 200.3 MB. Free memory was 162.0 MB in the beginning and 157.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1245.80 ms. Allocated memory was 200.3 MB in the beginning and 222.8 MB in the end (delta: 22.5 MB). Free memory was 157.5 MB in the beginning and 183.4 MB in the end (delta: -25.9 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5706.55 ms. Allocated memory was 222.8 MB in the beginning and 330.8 MB in the end (delta: 108.0 MB). Free memory was 183.4 MB in the beginning and 236.8 MB in the end (delta: -53.3 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 516]: 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 44 procedures, 255 locations, 1 error locations. SAFE Result, 5.6s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1523 SDtfs, 1084 SDslu, 3472 SDs, 0 SdLazy, 1726 SolverSat, 291 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1696occurred in iteration=8, 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, 0.8481012658227848 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 322 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 789 NumberOfCodeBlocks, 789 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 780 ConstructedInterpolants, 0 QuantifiedInterpolants, 124242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 60/67 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...