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_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:09:52,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:09:52,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:09:52,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:09:52,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:09:52,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:09:52,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:09:52,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:09:52,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:09:52,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:09:52,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:09:52,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:09:52,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:09:52,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:09:52,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:09:52,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:09:52,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:09:52,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:09:52,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:09:52,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:09:52,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:09:52,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:09:52,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:09:52,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:09:52,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:09:52,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:09:52,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:09:52,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:09:52,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:09:52,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:09:52,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:09:52,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:09:52,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:09:52,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:09:52,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:09:52,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:09:52,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:09:52,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:09:52,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:09:52,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:09:52,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:09:52,573 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 17:09:52,598 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:09:52,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:09:52,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:09:52,599 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:09:52,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:09:52,600 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:09:52,600 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:09:52,600 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:09:52,601 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:09:52,601 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:09:52,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:09:52,603 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:09:52,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:09:52,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:09:52,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:09:52,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:09:52,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:09:52,604 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:09:52,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:09:52,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:09:52,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:09:52,605 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:09:52,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:09:52,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:09:52,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:09:52,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:09:52,607 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:09:52,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:09:52,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:09:52,607 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:09:52,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:09:52,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:09:52,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:09:52,668 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:09:52,668 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:09:52,669 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2019-09-16 17:09:52,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/393964603/8a12af8931d14a2cb465bc2ebe1fe244/FLAG133b414d4 [2019-09-16 17:09:53,181 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:09:53,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2019-09-16 17:09:53,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/393964603/8a12af8931d14a2cb465bc2ebe1fe244/FLAG133b414d4 [2019-09-16 17:09:53,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/393964603/8a12af8931d14a2cb465bc2ebe1fe244 [2019-09-16 17:09:53,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:09:53,556 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:09:53,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:53,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:09:53,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:09:53,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:53" (1/1) ... [2019-09-16 17:09:53,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8d1e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:53, skipping insertion in model container [2019-09-16 17:09:53,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:53" (1/1) ... [2019-09-16 17:09:53,572 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:09:53,637 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:09:54,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:54,077 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:09:54,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:54,247 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:09:54,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:54 WrapperNode [2019-09-16 17:09:54,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:54,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:09:54,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:09:54,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:09:54,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:54" (1/1) ... [2019-09-16 17:09:54,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:54" (1/1) ... [2019-09-16 17:09:54,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:54" (1/1) ... [2019-09-16 17:09:54,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:54" (1/1) ... [2019-09-16 17:09:54,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:54" (1/1) ... [2019-09-16 17:09:54,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:54" (1/1) ... [2019-09-16 17:09:54,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:54" (1/1) ... [2019-09-16 17:09:54,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:09:54,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:09:54,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:09:54,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:09:54,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:54" (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 17:09:54,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:09:54,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:09:54,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:54,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:54,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:54,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:54,456 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:09:54,457 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:09:54,457 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:09:54,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:09:54,457 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:09:54,457 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:09:54,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:09:54,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-16 17:09:54,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:09:54,458 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:09:54,458 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:09:54,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:09:54,458 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:09:54,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:09:54,459 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:09:54,459 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:09:54,459 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:09:54,459 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-16 17:09:54,459 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:09:54,460 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:09:54,460 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:09:54,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:09:54,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:09:54,460 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:09:54,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:09:54,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-16 17:09:54,461 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-16 17:09:54,461 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:09:54,461 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:09:54,461 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:09:54,461 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:09:54,461 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:09:54,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:54,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:54,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:54,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:09:54,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:09:54,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:09:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:09:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:09:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:09:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:09:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:09:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:09:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:09:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:09:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:09:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:09:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:09:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:09:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-16 17:09:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:09:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:09:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:09:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:09:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:09:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:09:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:09:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:09:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:09:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:09:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:09:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:09:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:09:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:09:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-16 17:09:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:09:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:09:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:09:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:09:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-16 17:09:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-16 17:09:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:09:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:09:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:09:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:09:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:09:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:09:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:09:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:09:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:09:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:09:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:09:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:09:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:09:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:09:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:09:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:09:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:09:55,499 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:09:55,500 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:09:55,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:55 BoogieIcfgContainer [2019-09-16 17:09:55,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:09:55,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:09:55,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:09:55,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:09:55,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:09:53" (1/3) ... [2019-09-16 17:09:55,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11eb59b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:55, skipping insertion in model container [2019-09-16 17:09:55,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:54" (2/3) ... [2019-09-16 17:09:55,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11eb59b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:55, skipping insertion in model container [2019-09-16 17:09:55,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:55" (3/3) ... [2019-09-16 17:09:55,511 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product54.cil.c [2019-09-16 17:09:55,521 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:09:55,532 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:09:55,550 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:09:55,581 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:09:55,581 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:09:55,581 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:09:55,582 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:09:55,582 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:09:55,582 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:09:55,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:09:55,582 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:09:55,602 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states. [2019-09-16 17:09:55,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-16 17:09:55,616 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:55,617 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 17:09:55,619 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:55,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:55,624 INFO L82 PathProgramCache]: Analyzing trace with hash -404445524, now seen corresponding path program 1 times [2019-09-16 17:09:55,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:55,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:55,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:55,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:55,679 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:55,980 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 17:09:55,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:55,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:09:55,985 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:55,991 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:56,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:56,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:56,011 INFO L87 Difference]: Start difference. First operand 203 states. Second operand 2 states. [2019-09-16 17:09:56,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:56,055 INFO L93 Difference]: Finished difference Result 171 states and 200 transitions. [2019-09-16 17:09:56,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:56,057 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-16 17:09:56,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:56,073 INFO L225 Difference]: With dead ends: 171 [2019-09-16 17:09:56,073 INFO L226 Difference]: Without dead ends: 160 [2019-09-16 17:09:56,077 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 17:09:56,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-09-16 17:09:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2019-09-16 17:09:56,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2019-09-16 17:09:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 188 transitions. [2019-09-16 17:09:56,126 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 188 transitions. Word has length 59 [2019-09-16 17:09:56,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:56,127 INFO L475 AbstractCegarLoop]: Abstraction has 160 states and 188 transitions. [2019-09-16 17:09:56,130 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:56,130 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 188 transitions. [2019-09-16 17:09:56,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-16 17:09:56,134 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:56,134 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 17:09:56,135 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:56,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:56,135 INFO L82 PathProgramCache]: Analyzing trace with hash -315023676, now seen corresponding path program 1 times [2019-09-16 17:09:56,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:56,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:56,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,141 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:56,314 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 17:09:56,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:56,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:09:56,315 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:56,317 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:09:56,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:09:56,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:09:56,318 INFO L87 Difference]: Start difference. First operand 160 states and 188 transitions. Second operand 3 states. [2019-09-16 17:09:56,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:56,354 INFO L93 Difference]: Finished difference Result 151 states and 176 transitions. [2019-09-16 17:09:56,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:09:56,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-16 17:09:56,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:56,358 INFO L225 Difference]: With dead ends: 151 [2019-09-16 17:09:56,358 INFO L226 Difference]: Without dead ends: 151 [2019-09-16 17:09:56,360 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 17:09:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-09-16 17:09:56,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2019-09-16 17:09:56,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-09-16 17:09:56,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 176 transitions. [2019-09-16 17:09:56,390 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 176 transitions. Word has length 60 [2019-09-16 17:09:56,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:56,391 INFO L475 AbstractCegarLoop]: Abstraction has 151 states and 176 transitions. [2019-09-16 17:09:56,391 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:09:56,391 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 176 transitions. [2019-09-16 17:09:56,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-16 17:09:56,396 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:56,396 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] [2019-09-16 17:09:56,397 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:56,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:56,399 INFO L82 PathProgramCache]: Analyzing trace with hash 649722396, now seen corresponding path program 1 times [2019-09-16 17:09:56,399 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:56,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:56,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:56,404 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:56,553 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 17:09:56,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:56,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:56,554 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:56,554 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:56,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:56,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:56,555 INFO L87 Difference]: Start difference. First operand 151 states and 176 transitions. Second operand 7 states. [2019-09-16 17:09:57,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:57,000 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2019-09-16 17:09:57,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:09:57,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-16 17:09:57,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:57,005 INFO L225 Difference]: With dead ends: 151 [2019-09-16 17:09:57,005 INFO L226 Difference]: Without dead ends: 151 [2019-09-16 17:09:57,006 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 17:09:57,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-09-16 17:09:57,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2019-09-16 17:09:57,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-09-16 17:09:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 175 transitions. [2019-09-16 17:09:57,035 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 175 transitions. Word has length 65 [2019-09-16 17:09:57,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:57,037 INFO L475 AbstractCegarLoop]: Abstraction has 151 states and 175 transitions. [2019-09-16 17:09:57,037 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:57,041 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 175 transitions. [2019-09-16 17:09:57,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-16 17:09:57,044 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:57,044 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] [2019-09-16 17:09:57,046 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:57,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2071838844, now seen corresponding path program 1 times [2019-09-16 17:09:57,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:57,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:57,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,055 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:57,197 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 17:09:57,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:57,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:09:57,197 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:57,198 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:09:57,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:09:57,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:09:57,199 INFO L87 Difference]: Start difference. First operand 151 states and 175 transitions. Second operand 5 states. [2019-09-16 17:09:57,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:57,740 INFO L93 Difference]: Finished difference Result 265 states and 306 transitions. [2019-09-16 17:09:57,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:09:57,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2019-09-16 17:09:57,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:57,743 INFO L225 Difference]: With dead ends: 265 [2019-09-16 17:09:57,744 INFO L226 Difference]: Without dead ends: 265 [2019-09-16 17:09:57,744 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:09:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2019-09-16 17:09:57,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 246. [2019-09-16 17:09:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2019-09-16 17:09:57,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 280 transitions. [2019-09-16 17:09:57,766 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 280 transitions. Word has length 83 [2019-09-16 17:09:57,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:57,766 INFO L475 AbstractCegarLoop]: Abstraction has 246 states and 280 transitions. [2019-09-16 17:09:57,766 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:09:57,767 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 280 transitions. [2019-09-16 17:09:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-16 17:09:57,769 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:57,769 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 17:09:57,770 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:57,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:57,770 INFO L82 PathProgramCache]: Analyzing trace with hash 477615551, now seen corresponding path program 1 times [2019-09-16 17:09:57,770 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:57,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:57,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:57,773 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:57,879 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 17:09:57,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:57,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:57,880 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:57,880 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:57,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:57,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:57,881 INFO L87 Difference]: Start difference. First operand 246 states and 280 transitions. Second operand 7 states. [2019-09-16 17:09:58,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:58,613 INFO L93 Difference]: Finished difference Result 264 states and 306 transitions. [2019-09-16 17:09:58,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:09:58,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-09-16 17:09:58,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:58,617 INFO L225 Difference]: With dead ends: 264 [2019-09-16 17:09:58,617 INFO L226 Difference]: Without dead ends: 264 [2019-09-16 17:09:58,618 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 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 17:09:58,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2019-09-16 17:09:58,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 245. [2019-09-16 17:09:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2019-09-16 17:09:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 277 transitions. [2019-09-16 17:09:58,631 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 277 transitions. Word has length 97 [2019-09-16 17:09:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:58,632 INFO L475 AbstractCegarLoop]: Abstraction has 245 states and 277 transitions. [2019-09-16 17:09:58,632 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 277 transitions. [2019-09-16 17:09:58,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-16 17:09:58,634 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:58,635 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] [2019-09-16 17:09:58,635 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:58,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:58,635 INFO L82 PathProgramCache]: Analyzing trace with hash 115684108, now seen corresponding path program 1 times [2019-09-16 17:09:58,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:58,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:58,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:58,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:58,639 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:58,716 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 17:09:58,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:58,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:09:58,717 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:58,718 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:09:58,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:09:58,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:09:58,718 INFO L87 Difference]: Start difference. First operand 245 states and 277 transitions. Second operand 6 states. [2019-09-16 17:09:58,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:58,748 INFO L93 Difference]: Finished difference Result 250 states and 282 transitions. [2019-09-16 17:09:58,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:09:58,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-09-16 17:09:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:58,752 INFO L225 Difference]: With dead ends: 250 [2019-09-16 17:09:58,752 INFO L226 Difference]: Without dead ends: 250 [2019-09-16 17:09:58,753 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 17:09:58,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-09-16 17:09:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2019-09-16 17:09:58,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2019-09-16 17:09:58,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 282 transitions. [2019-09-16 17:09:58,770 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 282 transitions. Word has length 98 [2019-09-16 17:09:58,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:58,771 INFO L475 AbstractCegarLoop]: Abstraction has 250 states and 282 transitions. [2019-09-16 17:09:58,771 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:09:58,771 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 282 transitions. [2019-09-16 17:09:58,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-16 17:09:58,773 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:58,773 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] [2019-09-16 17:09:58,773 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:58,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:58,774 INFO L82 PathProgramCache]: Analyzing trace with hash 43297550, now seen corresponding path program 1 times [2019-09-16 17:09:58,774 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:58,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:58,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:58,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:58,779 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:58,910 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 17:09:58,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:58,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:09:58,911 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:58,912 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:09:58,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:09:58,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:09:58,913 INFO L87 Difference]: Start difference. First operand 250 states and 282 transitions. Second operand 8 states. [2019-09-16 17:09:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:58,941 INFO L93 Difference]: Finished difference Result 257 states and 289 transitions. [2019-09-16 17:09:58,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:09:58,943 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2019-09-16 17:09:58,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:58,946 INFO L225 Difference]: With dead ends: 257 [2019-09-16 17:09:58,946 INFO L226 Difference]: Without dead ends: 257 [2019-09-16 17:09:58,946 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 17:09:58,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2019-09-16 17:09:58,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 254. [2019-09-16 17:09:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2019-09-16 17:09:58,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 286 transitions. [2019-09-16 17:09:58,964 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 286 transitions. Word has length 98 [2019-09-16 17:09:58,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:58,965 INFO L475 AbstractCegarLoop]: Abstraction has 254 states and 286 transitions. [2019-09-16 17:09:58,965 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:09:58,965 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 286 transitions. [2019-09-16 17:09:58,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-16 17:09:58,967 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:58,967 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] [2019-09-16 17:09:58,968 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:58,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:58,968 INFO L82 PathProgramCache]: Analyzing trace with hash 373063311, now seen corresponding path program 1 times [2019-09-16 17:09:58,968 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:58,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:58,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:58,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:58,974 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:59,067 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 17:09:59,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:59,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:09:59,094 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:59,094 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:09:59,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:09:59,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:09:59,096 INFO L87 Difference]: Start difference. First operand 254 states and 286 transitions. Second operand 4 states. [2019-09-16 17:09:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:59,320 INFO L93 Difference]: Finished difference Result 522 states and 610 transitions. [2019-09-16 17:09:59,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:09:59,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2019-09-16 17:09:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:59,324 INFO L225 Difference]: With dead ends: 522 [2019-09-16 17:09:59,324 INFO L226 Difference]: Without dead ends: 522 [2019-09-16 17:09:59,324 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 17:09:59,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2019-09-16 17:09:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 513. [2019-09-16 17:09:59,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2019-09-16 17:09:59,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 593 transitions. [2019-09-16 17:09:59,345 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 593 transitions. Word has length 98 [2019-09-16 17:09:59,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:59,345 INFO L475 AbstractCegarLoop]: Abstraction has 513 states and 593 transitions. [2019-09-16 17:09:59,345 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:09:59,346 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 593 transitions. [2019-09-16 17:09:59,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-16 17:09:59,347 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:59,348 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, 1] [2019-09-16 17:09:59,348 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:59,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:59,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1661296137, now seen corresponding path program 1 times [2019-09-16 17:09:59,348 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:59,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:59,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:59,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:59,351 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:59,487 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 17:09:59,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:59,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:09:59,488 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:59,488 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:09:59,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:09:59,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:09:59,489 INFO L87 Difference]: Start difference. First operand 513 states and 593 transitions. Second operand 9 states. [2019-09-16 17:10:00,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:00,597 INFO L93 Difference]: Finished difference Result 936 states and 1084 transitions. [2019-09-16 17:10:00,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-16 17:10:00,598 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2019-09-16 17:10:00,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:00,604 INFO L225 Difference]: With dead ends: 936 [2019-09-16 17:10:00,604 INFO L226 Difference]: Without dead ends: 936 [2019-09-16 17:10:00,605 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-16 17:10:00,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2019-09-16 17:10:00,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 852. [2019-09-16 17:10:00,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2019-09-16 17:10:00,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 973 transitions. [2019-09-16 17:10:00,661 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 973 transitions. Word has length 102 [2019-09-16 17:10:00,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:00,662 INFO L475 AbstractCegarLoop]: Abstraction has 852 states and 973 transitions. [2019-09-16 17:10:00,662 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:10:00,662 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 973 transitions. [2019-09-16 17:10:00,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-09-16 17:10:00,665 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:00,665 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, 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 17:10:00,665 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:00,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:00,666 INFO L82 PathProgramCache]: Analyzing trace with hash -577396182, now seen corresponding path program 1 times [2019-09-16 17:10:00,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:00,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:00,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:00,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:00,669 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-16 17:10:00,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:10:00,813 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:10:00,814 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2019-09-16 17:10:00,816 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [83], [85], [88], [92], [93], [94], [110], [114], [115], [116], [119], [121], [127], [131], [134], [135], [136], [145], [149], [153], [156], [159], [161], [167], [169], [175], [178], [188], [189], [199], [200], [201], [202], [203], [205], [210], [212], [213], [214], [215], [219], [222], [226], [232], [261], [265], [268], [271], [273], [276], [283], [286], [289], [293], [294], [297], [300], [302], [308], [312], [315], [316], [317], [318], [320], [321], [322], [324], [327], [329], [332], [335], [344], [346], [347], [348], [372], [374], [375], [442], [443], [453], [461], [462], [463], [464], [465], [466], [467], [468], [469], [501], [502], [503], [504], [507], [508], [509], [510], [511], [512], [517], [518], [521], [522], [523], [524], [525], [526], [527], [528], [529], [530], [535], [536], [537], [538], [541], [542], [543], [544], [547], [548], [549], [550], [551], [552], [553], [554], [555], [556], [557], [561], [562], [563], [565], [566], [571], [572], [573] [2019-09-16 17:10:00,861 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:10:00,862 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:10:00,934 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:10:00,936 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 70 root evaluator evaluations with a maximum evaluation depth of 0. Performed 70 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-16 17:10:00,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:00,940 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:10:00,996 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:10:00,996 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:10:01,001 INFO L420 sIntCurrentIteration]: We unified 179 AI predicates to 179 [2019-09-16 17:10:01,001 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:10:01,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:10:01,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-16 17:10:01,002 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:01,003 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:10:01,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:10:01,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:10:01,003 INFO L87 Difference]: Start difference. First operand 852 states and 973 transitions. Second operand 2 states. [2019-09-16 17:10:01,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:01,004 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:10:01,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:10:01,004 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 180 [2019-09-16 17:10:01,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:01,004 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:10:01,005 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:10:01,005 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 179 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 17:10:01,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:10:01,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:10:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:10:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:10:01,006 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 180 [2019-09-16 17:10:01,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:01,006 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:10:01,006 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:10:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:10:01,006 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:10:01,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:10:01 BoogieIcfgContainer [2019-09-16 17:10:01,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:10:01,014 INFO L168 Benchmark]: Toolchain (without parser) took 7457.05 ms. Allocated memory was 131.6 MB in the beginning and 345.0 MB in the end (delta: 213.4 MB). Free memory was 84.6 MB in the beginning and 220.6 MB in the end (delta: -136.0 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:01,015 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 131.6 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:10:01,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.69 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 84.4 MB in the beginning and 161.9 MB in the end (delta: -77.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:01,016 INFO L168 Benchmark]: Boogie Preprocessor took 128.15 ms. Allocated memory is still 198.7 MB. Free memory was 161.9 MB in the beginning and 157.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:01,017 INFO L168 Benchmark]: RCFGBuilder took 1124.60 ms. Allocated memory was 198.7 MB in the beginning and 219.7 MB in the end (delta: 21.0 MB). Free memory was 157.4 MB in the beginning and 187.2 MB in the end (delta: -29.8 MB). Peak memory consumption was 91.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:01,018 INFO L168 Benchmark]: TraceAbstraction took 5508.34 ms. Allocated memory was 219.7 MB in the beginning and 345.0 MB in the end (delta: 125.3 MB). Free memory was 187.2 MB in the beginning and 220.6 MB in the end (delta: -33.5 MB). Peak memory consumption was 91.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:01,023 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 131.6 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 691.69 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 84.4 MB in the beginning and 161.9 MB in the end (delta: -77.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.15 ms. Allocated memory is still 198.7 MB. Free memory was 161.9 MB in the beginning and 157.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1124.60 ms. Allocated memory was 198.7 MB in the beginning and 219.7 MB in the end (delta: 21.0 MB). Free memory was 157.4 MB in the beginning and 187.2 MB in the end (delta: -29.8 MB). Peak memory consumption was 91.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5508.34 ms. Allocated memory was 219.7 MB in the beginning and 345.0 MB in the end (delta: 125.3 MB). Free memory was 187.2 MB in the beginning and 220.6 MB in the end (delta: -33.5 MB). Peak memory consumption was 91.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 206]: 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, 259 locations, 1 error locations. SAFE Result, 5.4s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 3.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1785 SDtfs, 1322 SDslu, 3532 SDs, 0 SdLazy, 1988 SolverSat, 496 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 290 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=852occurred in iteration=9, 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, 0.8044692737430168 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 134 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 940 NumberOfCodeBlocks, 940 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 930 ConstructedInterpolants, 0 QuantifiedInterpolants, 163586 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 65/74 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...