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_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:09:53,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:09:53,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:09:53,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:09:53,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:09:53,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:09:53,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:09:53,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:09:53,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:09:53,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:09:53,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:09:53,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:09:53,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:09:53,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:09:53,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:09:53,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:09:53,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:09:53,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:09:53,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:09:53,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:09:53,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:09:53,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:09:53,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:09:53,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:09:53,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:09:53,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:09:53,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:09:53,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:09:53,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:09:53,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:09:53,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:09:53,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:09:53,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:09:53,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:09:53,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:09:53,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:09:53,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:09:53,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:09:53,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:09:53,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:09:53,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:09:53,404 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 [2019-09-16 17:09:53,420 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:09:53,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:09:53,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:09:53,421 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:09:53,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:09:53,422 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:09:53,422 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:09:53,422 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:09:53,422 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:09:53,422 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:09:53,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:09:53,423 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:09:53,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:09:53,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:09:53,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:09:53,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:09:53,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:09:53,424 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:09:53,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:09:53,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:09:53,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:09:53,425 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:09:53,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:09:53,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:09:53,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:09:53,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:09:53,426 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:09:53,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:09:53,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:09:53,427 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:09:53,455 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:09:53,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:09:53,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:09:53,470 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:09:53,471 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:09:53,472 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2019-09-16 17:09:53,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d7b1a187/8ebec85f07a34c03a0a1ddb66e749bb4/FLAG5d1858f2d [2019-09-16 17:09:54,059 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:09:54,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2019-09-16 17:09:54,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d7b1a187/8ebec85f07a34c03a0a1ddb66e749bb4/FLAG5d1858f2d [2019-09-16 17:09:54,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d7b1a187/8ebec85f07a34c03a0a1ddb66e749bb4 [2019-09-16 17:09:54,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:09:54,397 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:09:54,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:54,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:09:54,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:09:54,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:54" (1/1) ... [2019-09-16 17:09:54,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6673ec2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:54, skipping insertion in model container [2019-09-16 17:09:54,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:54" (1/1) ... [2019-09-16 17:09:54,419 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:09:54,486 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:09:54,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:54,957 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:09:55,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:55,120 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:09:55,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:55 WrapperNode [2019-09-16 17:09:55,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:55,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:09:55,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:09:55,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:09:55,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:55" (1/1) ... [2019-09-16 17:09:55,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:55" (1/1) ... [2019-09-16 17:09:55,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:55" (1/1) ... [2019-09-16 17:09:55,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:55" (1/1) ... [2019-09-16 17:09:55,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:55" (1/1) ... [2019-09-16 17:09:55,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:55" (1/1) ... [2019-09-16 17:09:55,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:55" (1/1) ... [2019-09-16 17:09:55,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:09:55,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:09:55,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:09:55,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:09:55,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:55" (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 [2019-09-16 17:09:55,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:09:55,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:09:55,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:55,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:55,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:55,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:55,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:09:55,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:09:55,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:09:55,295 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:09:55,295 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:09:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:09:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:09:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:09:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:09:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:09:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:09:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:09:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:09:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:09:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:09:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:09:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:09:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:09:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:09:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:09:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:09:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-16 17:09:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:09:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:09:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:09:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-16 17:09:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:09:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:09:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:09:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:09:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:09:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:09:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:09:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-16 17:09:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:09:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:55,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:09:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:09:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:09:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:09:55,302 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:09:55,302 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:09:55,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:55,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:09:55,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:09:55,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:09:55,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:09:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:09:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:09:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:09:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:09:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:09:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:09:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:09:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:09:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:09:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:09:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:09:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:09:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:09:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:09:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:09:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:09:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:09:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:09:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:09:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:09:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:09:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:09:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:09:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:09:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:09:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:09:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:09:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-16 17:09:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:09:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:09:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:09:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:09:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:09:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:09:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:09:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-16 17:09:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-16 17:09:55,310 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:09:55,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:09:55,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:09:55,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:09:56,476 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:09:56,476 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:09:56,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:56 BoogieIcfgContainer [2019-09-16 17:09:56,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:09:56,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:09:56,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:09:56,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:09:56,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:09:54" (1/3) ... [2019-09-16 17:09:56,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5514810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:56, skipping insertion in model container [2019-09-16 17:09:56,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:55" (2/3) ... [2019-09-16 17:09:56,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5514810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:56, skipping insertion in model container [2019-09-16 17:09:56,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:56" (3/3) ... [2019-09-16 17:09:56,487 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product55.cil.c [2019-09-16 17:09:56,497 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:09:56,505 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:09:56,521 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:09:56,548 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:09:56,548 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:09:56,548 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:09:56,548 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:09:56,549 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:09:56,549 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:09:56,549 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:09:56,549 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:09:56,569 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2019-09-16 17:09:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-16 17:09:56,583 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:56,584 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] [2019-09-16 17:09:56,586 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:56,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:56,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1039510468, now seen corresponding path program 1 times [2019-09-16 17:09:56,594 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:56,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:56,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,645 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:56,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:56,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:09:56,928 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:56,941 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:56,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:56,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:56,957 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 2 states. [2019-09-16 17:09:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:56,984 INFO L93 Difference]: Finished difference Result 173 states and 204 transitions. [2019-09-16 17:09:56,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:56,986 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-16 17:09:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:56,998 INFO L225 Difference]: With dead ends: 173 [2019-09-16 17:09:56,998 INFO L226 Difference]: Without dead ends: 162 [2019-09-16 17:09:57,000 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 [2019-09-16 17:09:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2019-09-16 17:09:57,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2019-09-16 17:09:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-09-16 17:09:57,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 192 transitions. [2019-09-16 17:09:57,064 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 192 transitions. Word has length 59 [2019-09-16 17:09:57,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:57,064 INFO L475 AbstractCegarLoop]: Abstraction has 162 states and 192 transitions. [2019-09-16 17:09:57,064 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:57,065 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 192 transitions. [2019-09-16 17:09:57,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-16 17:09:57,069 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:57,069 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] [2019-09-16 17:09:57,069 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:57,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:57,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1700142027, now seen corresponding path program 1 times [2019-09-16 17:09:57,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:57,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:57,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,073 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:57,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:57,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:09:57,219 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:57,222 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:09:57,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:09:57,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:09:57,223 INFO L87 Difference]: Start difference. First operand 162 states and 192 transitions. Second operand 3 states. [2019-09-16 17:09:57,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:57,258 INFO L93 Difference]: Finished difference Result 153 states and 180 transitions. [2019-09-16 17:09:57,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:09:57,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-16 17:09:57,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:57,266 INFO L225 Difference]: With dead ends: 153 [2019-09-16 17:09:57,266 INFO L226 Difference]: Without dead ends: 153 [2019-09-16 17:09:57,269 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 [2019-09-16 17:09:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-09-16 17:09:57,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-09-16 17:09:57,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-09-16 17:09:57,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2019-09-16 17:09:57,285 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 60 [2019-09-16 17:09:57,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:57,285 INFO L475 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2019-09-16 17:09:57,285 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:09:57,286 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2019-09-16 17:09:57,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-16 17:09:57,289 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:57,289 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] [2019-09-16 17:09:57,289 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:57,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:57,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1740397712, now seen corresponding path program 1 times [2019-09-16 17:09:57,290 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:57,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:57,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,293 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:57,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:57,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:57,511 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:57,512 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:57,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:57,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:57,512 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 7 states. [2019-09-16 17:09:58,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:58,095 INFO L93 Difference]: Finished difference Result 334 states and 402 transitions. [2019-09-16 17:09:58,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:09:58,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-16 17:09:58,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:58,100 INFO L225 Difference]: With dead ends: 334 [2019-09-16 17:09:58,101 INFO L226 Difference]: Without dead ends: 334 [2019-09-16 17:09:58,101 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 [2019-09-16 17:09:58,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2019-09-16 17:09:58,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 326. [2019-09-16 17:09:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2019-09-16 17:09:58,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2019-09-16 17:09:58,141 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 64 [2019-09-16 17:09:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:58,142 INFO L475 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2019-09-16 17:09:58,142 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:58,142 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2019-09-16 17:09:58,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-16 17:09:58,146 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:58,146 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] [2019-09-16 17:09:58,146 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:58,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:58,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1889366184, now seen corresponding path program 1 times [2019-09-16 17:09:58,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:58,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:58,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:58,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:58,150 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:09:58,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:58,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:58,284 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:58,284 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:58,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:58,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:58,285 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand 7 states. [2019-09-16 17:09:59,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:59,134 INFO L93 Difference]: Finished difference Result 521 states and 652 transitions. [2019-09-16 17:09:59,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:09:59,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-16 17:09:59,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:59,141 INFO L225 Difference]: With dead ends: 521 [2019-09-16 17:09:59,141 INFO L226 Difference]: Without dead ends: 521 [2019-09-16 17:09:59,142 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 [2019-09-16 17:09:59,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2019-09-16 17:09:59,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 468. [2019-09-16 17:09:59,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2019-09-16 17:09:59,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 565 transitions. [2019-09-16 17:09:59,209 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 565 transitions. Word has length 70 [2019-09-16 17:09:59,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:59,209 INFO L475 AbstractCegarLoop]: Abstraction has 468 states and 565 transitions. [2019-09-16 17:09:59,209 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:59,210 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 565 transitions. [2019-09-16 17:09:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-16 17:09:59,214 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:59,216 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] [2019-09-16 17:09:59,216 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:59,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:59,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1315837753, now seen corresponding path program 1 times [2019-09-16 17:09:59,217 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:59,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:59,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:59,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:59,220 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:59,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:59,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:09:59,386 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:59,388 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:09:59,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:09:59,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:09:59,389 INFO L87 Difference]: Start difference. First operand 468 states and 565 transitions. Second operand 6 states. [2019-09-16 17:09:59,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:59,432 INFO L93 Difference]: Finished difference Result 478 states and 575 transitions. [2019-09-16 17:09:59,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:09:59,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-09-16 17:09:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:59,438 INFO L225 Difference]: With dead ends: 478 [2019-09-16 17:09:59,438 INFO L226 Difference]: Without dead ends: 478 [2019-09-16 17:09:59,439 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 [2019-09-16 17:09:59,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2019-09-16 17:09:59,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2019-09-16 17:09:59,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2019-09-16 17:09:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 575 transitions. [2019-09-16 17:09:59,497 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 575 transitions. Word has length 97 [2019-09-16 17:09:59,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:59,499 INFO L475 AbstractCegarLoop]: Abstraction has 478 states and 575 transitions. [2019-09-16 17:09:59,499 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:09:59,500 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 575 transitions. [2019-09-16 17:09:59,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-16 17:09:59,511 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:59,511 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] [2019-09-16 17:09:59,511 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:59,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:59,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1243451195, now seen corresponding path program 1 times [2019-09-16 17:09:59,512 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:59,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:59,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:59,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:59,515 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:59,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:59,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:59,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:09:59,626 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:59,627 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:09:59,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:09:59,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:09:59,628 INFO L87 Difference]: Start difference. First operand 478 states and 575 transitions. Second operand 8 states. [2019-09-16 17:09:59,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:59,661 INFO L93 Difference]: Finished difference Result 492 states and 589 transitions. [2019-09-16 17:09:59,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:09:59,662 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2019-09-16 17:09:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:59,666 INFO L225 Difference]: With dead ends: 492 [2019-09-16 17:09:59,666 INFO L226 Difference]: Without dead ends: 492 [2019-09-16 17:09:59,667 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 [2019-09-16 17:09:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-09-16 17:09:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 486. [2019-09-16 17:09:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2019-09-16 17:09:59,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2019-09-16 17:09:59,693 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 97 [2019-09-16 17:09:59,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:59,694 INFO L475 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2019-09-16 17:09:59,694 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:09:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2019-09-16 17:09:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-16 17:09:59,697 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:59,698 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] [2019-09-16 17:09:59,698 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:59,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:59,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1573216956, now seen corresponding path program 1 times [2019-09-16 17:09:59,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:59,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:59,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:59,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:59,704 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:59,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:59,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:09:59,812 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:59,813 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:09:59,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:09:59,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:09:59,814 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 4 states. [2019-09-16 17:10:00,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:00,091 INFO L93 Difference]: Finished difference Result 1092 states and 1361 transitions. [2019-09-16 17:10:00,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:10:00,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2019-09-16 17:10:00,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:00,098 INFO L225 Difference]: With dead ends: 1092 [2019-09-16 17:10:00,098 INFO L226 Difference]: Without dead ends: 1092 [2019-09-16 17:10:00,099 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 [2019-09-16 17:10:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2019-09-16 17:10:00,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1075. [2019-09-16 17:10:00,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2019-09-16 17:10:00,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1324 transitions. [2019-09-16 17:10:00,152 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1324 transitions. Word has length 97 [2019-09-16 17:10:00,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:00,153 INFO L475 AbstractCegarLoop]: Abstraction has 1075 states and 1324 transitions. [2019-09-16 17:10:00,153 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:10:00,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1324 transitions. [2019-09-16 17:10:00,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-16 17:10:00,156 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:00,156 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, 1, 1, 1, 1] [2019-09-16 17:10:00,156 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:00,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:00,157 INFO L82 PathProgramCache]: Analyzing trace with hash 164101122, now seen corresponding path program 1 times [2019-09-16 17:10:00,157 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:00,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:00,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:00,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:00,159 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:00,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:10:00,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:00,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:10:00,351 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:00,352 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:10:00,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:10:00,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:10:00,353 INFO L87 Difference]: Start difference. First operand 1075 states and 1324 transitions. Second operand 9 states. [2019-09-16 17:10:01,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:01,737 INFO L93 Difference]: Finished difference Result 2067 states and 2545 transitions. [2019-09-16 17:10:01,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-16 17:10:01,737 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2019-09-16 17:10:01,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:01,749 INFO L225 Difference]: With dead ends: 2067 [2019-09-16 17:10:01,749 INFO L226 Difference]: Without dead ends: 2067 [2019-09-16 17:10:01,750 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 [2019-09-16 17:10:01,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2019-09-16 17:10:01,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 1836. [2019-09-16 17:10:01,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2019-09-16 17:10:01,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2223 transitions. [2019-09-16 17:10:01,842 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2223 transitions. Word has length 101 [2019-09-16 17:10:01,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:01,842 INFO L475 AbstractCegarLoop]: Abstraction has 1836 states and 2223 transitions. [2019-09-16 17:10:01,842 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:10:01,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2223 transitions. [2019-09-16 17:10:01,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-09-16 17:10:01,847 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:01,847 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:01,847 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:01,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:01,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1947078735, now seen corresponding path program 1 times [2019-09-16 17:10:01,848 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:01,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:01,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:01,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:01,851 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-16 17:10:02,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:10:02,039 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:10:02,040 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 179 with the following transitions: [2019-09-16 17:10:02,045 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], [181], [197], [198], [208], [209], [210], [211], [212], [214], [219], [221], [222], [226], [229], [233], [239], [266], [267], [270], [274], [275], [278], [280], [283], [290], [293], [296], [300], [301], [304], [307], [309], [315], [319], [322], [323], [324], [325], [327], [328], [329], [331], [334], [336], [339], [342], [351], [353], [354], [355], [379], [381], [382], [449], [450], [460], [468], [469], [470], [471], [472], [473], [474], [475], [476], [510], [511], [512], [513], [516], [517], [518], [519], [520], [521], [526], [527], [530], [531], [532], [533], [534], [535], [536], [537], [538], [539], [544], [545], [546], [547], [550], [551], [552], [553], [556], [557], [558], [559], [560], [561], [562], [563], [564], [565], [566], [570], [571], [572], [574], [575], [580], [581], [582] [2019-09-16 17:10:02,116 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:10:02,116 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:10:02,233 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:10:02,235 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. [2019-09-16 17:10:02,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:02,242 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:10:02,357 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:10:02,358 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:10:02,368 INFO L420 sIntCurrentIteration]: We unified 177 AI predicates to 177 [2019-09-16 17:10:02,368 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:10:02,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:10:02,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-16 17:10:02,370 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:02,370 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:10:02,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:10:02,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:10:02,372 INFO L87 Difference]: Start difference. First operand 1836 states and 2223 transitions. Second operand 2 states. [2019-09-16 17:10:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:02,372 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:10:02,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:10:02,373 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 178 [2019-09-16 17:10:02,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:02,373 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:10:02,373 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:10:02,374 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:10:02,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:10:02,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:10:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:10:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:10:02,375 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2019-09-16 17:10:02,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:02,375 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:10:02,375 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:10:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:10:02,376 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:10:02,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:10:02 BoogieIcfgContainer [2019-09-16 17:10:02,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:10:02,386 INFO L168 Benchmark]: Toolchain (without parser) took 7987.39 ms. Allocated memory was 141.6 MB in the beginning and 310.4 MB in the end (delta: 168.8 MB). Free memory was 87.9 MB in the beginning and 134.0 MB in the end (delta: -46.2 MB). Peak memory consumption was 122.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:02,387 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory is still 107.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:10:02,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.35 ms. Allocated memory was 141.6 MB in the beginning and 200.3 MB in the end (delta: 58.7 MB). Free memory was 87.9 MB in the beginning and 165.5 MB in the end (delta: -77.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:02,391 INFO L168 Benchmark]: Boogie Preprocessor took 112.77 ms. Allocated memory is still 200.3 MB. Free memory was 165.5 MB in the beginning and 161.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:02,393 INFO L168 Benchmark]: RCFGBuilder took 1244.33 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 161.2 MB in the beginning and 189.1 MB in the end (delta: -28.0 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:02,400 INFO L168 Benchmark]: TraceAbstraction took 5902.64 ms. Allocated memory was 228.6 MB in the beginning and 310.4 MB in the end (delta: 81.8 MB). Free memory was 187.6 MB in the beginning and 134.0 MB in the end (delta: 53.5 MB). Peak memory consumption was 135.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:02,407 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 141.6 MB. Free memory is still 107.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 721.35 ms. Allocated memory was 141.6 MB in the beginning and 200.3 MB in the end (delta: 58.7 MB). Free memory was 87.9 MB in the beginning and 165.5 MB in the end (delta: -77.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.77 ms. Allocated memory is still 200.3 MB. Free memory was 165.5 MB in the beginning and 161.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1244.33 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 161.2 MB in the beginning and 189.1 MB in the end (delta: -28.0 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5902.64 ms. Allocated memory was 228.6 MB in the beginning and 310.4 MB in the end (delta: 81.8 MB). Free memory was 187.6 MB in the beginning and 134.0 MB in the end (delta: 53.5 MB). Peak memory consumption was 135.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 551]: 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, 261 locations, 1 error locations. SAFE Result, 5.8s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1671 SDtfs, 1188 SDslu, 3829 SDs, 0 SdLazy, 1891 SolverSat, 304 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1836occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8022598870056498 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 315 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 823 NumberOfCodeBlocks, 823 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 814 ConstructedInterpolants, 0 QuantifiedInterpolants, 136564 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 61/70 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...