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_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:36,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:36,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:36,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:36,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:36,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:36,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:36,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:36,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:36,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:36,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:36,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:36,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:36,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:36,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:36,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:36,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:36,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:36,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:36,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:36,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:36,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:36,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:36,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:36,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:36,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:36,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:36,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:36,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:36,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:36,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:36,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:36,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:36,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:36,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:36,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:36,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:36,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:36,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:36,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:36,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:36,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:31:36,618 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:36,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:36,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:36,619 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:36,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:36,619 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:36,620 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:36,620 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:36,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:36,620 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:36,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:36,621 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:36,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:36,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:36,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:36,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:36,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:36,623 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:36,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:36,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:36,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:36,624 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:36,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:36,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:36,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:36,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:36,625 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:36,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:36,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:36,625 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:36,674 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:36,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:36,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:36,698 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:36,699 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:36,700 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2019-09-20 13:31:36,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60aefe54/614febf87ce9464ba915c8c7b66ecef4/FLAG5bd1b65ea [2019-09-20 13:31:37,347 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:37,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2019-09-20 13:31:37,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60aefe54/614febf87ce9464ba915c8c7b66ecef4/FLAG5bd1b65ea [2019-09-20 13:31:37,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60aefe54/614febf87ce9464ba915c8c7b66ecef4 [2019-09-20 13:31:37,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:37,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:37,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:37,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:37,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:37,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:37" (1/1) ... [2019-09-20 13:31:37,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38efe2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:37, skipping insertion in model container [2019-09-20 13:31:37,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:37" (1/1) ... [2019-09-20 13:31:37,596 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:37,649 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:38,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:38,200 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:38,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:38,327 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:38,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:38 WrapperNode [2019-09-20 13:31:38,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:38,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:38,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:38,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:38,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:38" (1/1) ... [2019-09-20 13:31:38,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:38" (1/1) ... [2019-09-20 13:31:38,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:38" (1/1) ... [2019-09-20 13:31:38,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:38" (1/1) ... [2019-09-20 13:31:38,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:38" (1/1) ... [2019-09-20 13:31:38,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:38" (1/1) ... [2019-09-20 13:31:38,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:38" (1/1) ... [2019-09-20 13:31:38,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:38,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:38,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:38,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:38,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:38,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:38,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:38,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:38,474 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:38,474 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:38,474 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:38,475 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:38,475 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:38,475 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:38,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:38,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:38,476 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:38,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:38,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:31:38,476 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:31:38,476 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:38,477 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:38,477 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:38,477 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:38,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:38,477 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:38,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:38,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:38,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:38,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:38,479 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:31:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:31:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:31:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:31:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:39,596 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:39,597 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:39,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:39 BoogieIcfgContainer [2019-09-20 13:31:39,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:39,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:39,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:39,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:39,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:37" (1/3) ... [2019-09-20 13:31:39,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5e291d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:39, skipping insertion in model container [2019-09-20 13:31:39,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:38" (2/3) ... [2019-09-20 13:31:39,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5e291d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:39, skipping insertion in model container [2019-09-20 13:31:39,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:39" (3/3) ... [2019-09-20 13:31:39,607 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product51.cil.c [2019-09-20 13:31:39,618 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:39,627 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:39,645 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:39,673 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:39,673 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:39,674 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:39,674 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:39,674 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:39,674 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:39,674 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:39,675 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:39,696 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2019-09-20 13:31:39,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:31:39,710 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:39,711 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:39,713 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:39,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:39,719 INFO L82 PathProgramCache]: Analyzing trace with hash -878720759, now seen corresponding path program 1 times [2019-09-20 13:31:39,721 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:39,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:39,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:39,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:39,782 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:40,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:40,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:40,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:40,182 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:40,190 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:40,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:40,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:40,218 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 2 states. [2019-09-20 13:31:40,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:40,259 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2019-09-20 13:31:40,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:40,260 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:31:40,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:40,272 INFO L225 Difference]: With dead ends: 155 [2019-09-20 13:31:40,272 INFO L226 Difference]: Without dead ends: 144 [2019-09-20 13:31:40,274 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:40,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-09-20 13:31:40,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2019-09-20 13:31:40,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-09-20 13:31:40,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2019-09-20 13:31:40,330 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 59 [2019-09-20 13:31:40,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:40,330 INFO L475 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2019-09-20 13:31:40,330 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:40,331 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2019-09-20 13:31:40,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:31:40,335 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:40,335 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:40,335 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:40,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1980606616, now seen corresponding path program 1 times [2019-09-20 13:31:40,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:40,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:40,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:40,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:40,339 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:40,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:40,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:40,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:40,448 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:40,450 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:40,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:40,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:40,451 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand 3 states. [2019-09-20 13:31:40,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:40,471 INFO L93 Difference]: Finished difference Result 135 states and 158 transitions. [2019-09-20 13:31:40,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:40,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:31:40,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:40,477 INFO L225 Difference]: With dead ends: 135 [2019-09-20 13:31:40,477 INFO L226 Difference]: Without dead ends: 135 [2019-09-20 13:31:40,479 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:40,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-09-20 13:31:40,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2019-09-20 13:31:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2019-09-20 13:31:40,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 158 transitions. [2019-09-20 13:31:40,505 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 158 transitions. Word has length 60 [2019-09-20 13:31:40,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:40,506 INFO L475 AbstractCegarLoop]: Abstraction has 135 states and 158 transitions. [2019-09-20 13:31:40,506 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:40,506 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 158 transitions. [2019-09-20 13:31:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-20 13:31:40,509 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:40,509 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] [2019-09-20 13:31:40,511 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:40,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:40,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1839911150, now seen corresponding path program 1 times [2019-09-20 13:31:40,511 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:40,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:40,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:40,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:40,516 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:40,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:40,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:40,709 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:40,710 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:40,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:40,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:40,711 INFO L87 Difference]: Start difference. First operand 135 states and 158 transitions. Second operand 7 states. [2019-09-20 13:31:41,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:41,350 INFO L93 Difference]: Finished difference Result 298 states and 358 transitions. [2019-09-20 13:31:41,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:41,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-20 13:31:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:41,358 INFO L225 Difference]: With dead ends: 298 [2019-09-20 13:31:41,362 INFO L226 Difference]: Without dead ends: 298 [2019-09-20 13:31:41,363 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:31:41,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2019-09-20 13:31:41,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 290. [2019-09-20 13:31:41,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2019-09-20 13:31:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 352 transitions. [2019-09-20 13:31:41,398 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 352 transitions. Word has length 64 [2019-09-20 13:31:41,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:41,399 INFO L475 AbstractCegarLoop]: Abstraction has 290 states and 352 transitions. [2019-09-20 13:31:41,399 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:41,399 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 352 transitions. [2019-09-20 13:31:41,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:31:41,402 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:41,403 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:41,403 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:41,403 INFO L82 PathProgramCache]: Analyzing trace with hash 423224560, now seen corresponding path program 1 times [2019-09-20 13:31:41,403 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:41,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:41,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,406 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:31:41,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:41,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:41,583 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:41,584 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:41,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:41,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:41,584 INFO L87 Difference]: Start difference. First operand 290 states and 352 transitions. Second operand 7 states. [2019-09-20 13:31:42,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:42,397 INFO L93 Difference]: Finished difference Result 469 states and 590 transitions. [2019-09-20 13:31:42,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:42,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:31:42,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:42,403 INFO L225 Difference]: With dead ends: 469 [2019-09-20 13:31:42,404 INFO L226 Difference]: Without dead ends: 469 [2019-09-20 13:31:42,404 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:31:42,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2019-09-20 13:31:42,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 416. [2019-09-20 13:31:42,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2019-09-20 13:31:42,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 503 transitions. [2019-09-20 13:31:42,447 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 503 transitions. Word has length 70 [2019-09-20 13:31:42,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:42,447 INFO L475 AbstractCegarLoop]: Abstraction has 416 states and 503 transitions. [2019-09-20 13:31:42,447 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:42,447 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 503 transitions. [2019-09-20 13:31:42,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:31:42,454 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:42,454 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] [2019-09-20 13:31:42,455 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:42,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:42,455 INFO L82 PathProgramCache]: Analyzing trace with hash -742421187, now seen corresponding path program 1 times [2019-09-20 13:31:42,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:42,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:42,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:42,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:42,461 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:42,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:42,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:42,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:42,587 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:42,588 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:42,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:42,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:42,588 INFO L87 Difference]: Start difference. First operand 416 states and 503 transitions. Second operand 6 states. [2019-09-20 13:31:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:42,628 INFO L93 Difference]: Finished difference Result 426 states and 513 transitions. [2019-09-20 13:31:42,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:42,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2019-09-20 13:31:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:42,632 INFO L225 Difference]: With dead ends: 426 [2019-09-20 13:31:42,632 INFO L226 Difference]: Without dead ends: 426 [2019-09-20 13:31:42,633 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:42,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2019-09-20 13:31:42,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2019-09-20 13:31:42,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-09-20 13:31:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 513 transitions. [2019-09-20 13:31:42,664 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 513 transitions. Word has length 92 [2019-09-20 13:31:42,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:42,666 INFO L475 AbstractCegarLoop]: Abstraction has 426 states and 513 transitions. [2019-09-20 13:31:42,666 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 513 transitions. [2019-09-20 13:31:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:31:42,670 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:42,670 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] [2019-09-20 13:31:42,670 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:42,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:42,671 INFO L82 PathProgramCache]: Analyzing trace with hash -40821313, now seen corresponding path program 1 times [2019-09-20 13:31:42,671 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:42,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:42,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:42,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:42,675 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:42,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:42,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:42,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:31:42,818 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:42,820 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:31:42,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:31:42,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:42,821 INFO L87 Difference]: Start difference. First operand 426 states and 513 transitions. Second operand 8 states. [2019-09-20 13:31:42,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:42,856 INFO L93 Difference]: Finished difference Result 440 states and 527 transitions. [2019-09-20 13:31:42,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:31:42,857 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2019-09-20 13:31:42,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:42,860 INFO L225 Difference]: With dead ends: 440 [2019-09-20 13:31:42,860 INFO L226 Difference]: Without dead ends: 440 [2019-09-20 13:31:42,861 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:42,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2019-09-20 13:31:42,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 434. [2019-09-20 13:31:42,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-09-20 13:31:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2019-09-20 13:31:42,882 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 92 [2019-09-20 13:31:42,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:42,883 INFO L475 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2019-09-20 13:31:42,883 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:31:42,883 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2019-09-20 13:31:42,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:31:42,885 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:42,885 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] [2019-09-20 13:31:42,886 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:42,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:42,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1684659584, now seen corresponding path program 1 times [2019-09-20 13:31:42,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:42,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:42,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:42,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:42,889 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:42,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:42,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:42,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:42,967 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:42,968 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:42,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:42,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:42,968 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 4 states. [2019-09-20 13:31:43,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:43,206 INFO L93 Difference]: Finished difference Result 982 states and 1225 transitions. [2019-09-20 13:31:43,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:43,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-09-20 13:31:43,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:43,213 INFO L225 Difference]: With dead ends: 982 [2019-09-20 13:31:43,213 INFO L226 Difference]: Without dead ends: 982 [2019-09-20 13:31:43,214 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:43,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2019-09-20 13:31:43,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 965. [2019-09-20 13:31:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2019-09-20 13:31:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1188 transitions. [2019-09-20 13:31:43,263 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1188 transitions. Word has length 92 [2019-09-20 13:31:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:43,263 INFO L475 AbstractCegarLoop]: Abstraction has 965 states and 1188 transitions. [2019-09-20 13:31:43,263 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:43,263 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1188 transitions. [2019-09-20 13:31:43,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-20 13:31:43,266 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:43,266 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] [2019-09-20 13:31:43,266 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:43,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:43,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1838654426, now seen corresponding path program 1 times [2019-09-20 13:31:43,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:43,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:43,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,270 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:43,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:43,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:43,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:31:43,501 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:43,503 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:31:43,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:31:43,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:31:43,504 INFO L87 Difference]: Start difference. First operand 965 states and 1188 transitions. Second operand 9 states. [2019-09-20 13:31:44,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:44,672 INFO L93 Difference]: Finished difference Result 1885 states and 2323 transitions. [2019-09-20 13:31:44,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:31:44,672 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2019-09-20 13:31:44,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:44,686 INFO L225 Difference]: With dead ends: 1885 [2019-09-20 13:31:44,686 INFO L226 Difference]: Without dead ends: 1885 [2019-09-20 13:31:44,687 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:31:44,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2019-09-20 13:31:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1660. [2019-09-20 13:31:44,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1660 states. [2019-09-20 13:31:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2011 transitions. [2019-09-20 13:31:44,815 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2011 transitions. Word has length 96 [2019-09-20 13:31:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:44,817 INFO L475 AbstractCegarLoop]: Abstraction has 1660 states and 2011 transitions. [2019-09-20 13:31:44,817 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:31:44,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2011 transitions. [2019-09-20 13:31:44,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-09-20 13:31:44,826 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:44,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:44,827 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:44,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:44,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1624055928, now seen corresponding path program 1 times [2019-09-20 13:31:44,828 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:44,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:44,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:44,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:44,833 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:31:45,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:45,048 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:45,049 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 158 with the following transitions: [2019-09-20 13:31:45,052 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], [212], [217], [219], [220], [221], [222], [228], [231], [235], [241], [270], [274], [275], [278], [280], [283], [290], [293], [296], [300], [301], [304], [305], [306], [308], [309], [310], [312], [315], [317], [320], [323], [332], [334], [335], [336], [430], [431], [441], [449], [450], [451], [452], [453], [454], [455], [456], [457], [491], [492], [493], [494], [497], [498], [499], [500], [501], [502], [507], [508], [511], [512], [513], [514], [515], [516], [517], [518], [519], [520], [525], [526], [527], [528], [531], [532], [533], [534], [535], [536], [537], [538], [539], [543], [544], [545], [553], [554], [555] [2019-09-20 13:31:45,109 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:45,109 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:45,175 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:45,177 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-20 13:31:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:45,182 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:45,237 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:45,238 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:45,243 INFO L420 sIntCurrentIteration]: We unified 156 AI predicates to 156 [2019-09-20 13:31:45,243 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:45,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:45,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:31:45,244 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:45,245 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:45,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:45,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:45,245 INFO L87 Difference]: Start difference. First operand 1660 states and 2011 transitions. Second operand 2 states. [2019-09-20 13:31:45,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:45,246 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:45,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:45,246 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 157 [2019-09-20 13:31:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:45,247 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:45,247 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:45,247 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:45,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:45,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:45,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:45,248 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 157 [2019-09-20 13:31:45,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:45,248 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:45,248 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:45,249 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:45,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:45,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:45 BoogieIcfgContainer [2019-09-20 13:31:45,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:45,257 INFO L168 Benchmark]: Toolchain (without parser) took 7680.04 ms. Allocated memory was 139.5 MB in the beginning and 328.7 MB in the end (delta: 189.3 MB). Free memory was 86.7 MB in the beginning and 239.9 MB in the end (delta: -153.2 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:45,258 INFO L168 Benchmark]: CDTParser took 1.22 ms. Allocated memory is still 139.5 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. [2019-09-20 13:31:45,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.58 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 86.5 MB in the beginning and 162.4 MB in the end (delta: -75.9 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:45,260 INFO L168 Benchmark]: Boogie Preprocessor took 92.75 ms. Allocated memory is still 199.8 MB. Free memory was 162.4 MB in the beginning and 158.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:45,261 INFO L168 Benchmark]: RCFGBuilder took 1177.12 ms. Allocated memory was 199.8 MB in the beginning and 223.3 MB in the end (delta: 23.6 MB). Free memory was 158.1 MB in the beginning and 186.9 MB in the end (delta: -28.8 MB). Peak memory consumption was 88.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:45,262 INFO L168 Benchmark]: TraceAbstraction took 5654.95 ms. Allocated memory was 223.3 MB in the beginning and 328.7 MB in the end (delta: 105.4 MB). Free memory was 185.5 MB in the beginning and 239.9 MB in the end (delta: -54.4 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:45,266 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.22 ms. Allocated memory is still 139.5 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 750.58 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 86.5 MB in the beginning and 162.4 MB in the end (delta: -75.9 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.75 ms. Allocated memory is still 199.8 MB. Free memory was 162.4 MB in the beginning and 158.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1177.12 ms. Allocated memory was 199.8 MB in the beginning and 223.3 MB in the end (delta: 23.6 MB). Free memory was 158.1 MB in the beginning and 186.9 MB in the end (delta: -28.8 MB). Peak memory consumption was 88.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5654.95 ms. Allocated memory was 223.3 MB in the beginning and 328.7 MB in the end (delta: 105.4 MB). Free memory was 185.5 MB in the beginning and 239.9 MB in the end (delta: -54.4 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 948]: 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 43 procedures, 251 locations, 1 error locations. SAFE Result, 5.5s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1480 SDtfs, 1076 SDslu, 3415 SDs, 0 SdLazy, 1750 SolverSat, 300 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1660occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8461538461538461 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 309 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 782 NumberOfCodeBlocks, 782 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 773 ConstructedInterpolants, 0 QuantifiedInterpolants, 121202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 59/66 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...