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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:38:43,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:38:43,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:38:43,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:38:43,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:38:43,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:38:43,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:38:43,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:38:43,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:38:43,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:38:43,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:38:43,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:38:43,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:38:43,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:38:43,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:38:43,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:38:43,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:38:43,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:38:43,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:38:43,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:38:43,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:38:43,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:38:43,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:38:43,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:38:43,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:38:43,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:38:43,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:38:43,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:38:43,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:38:43,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:38:43,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:38:43,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:38:43,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:38:43,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:38:43,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:38:43,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:38:43,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:38:43,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:38:43,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:38:43,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:38:43,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:38:43,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:38:43,536 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:38:43,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:38:43,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:38:43,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:38:43,538 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:38:43,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:38:43,538 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:38:43,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:38:43,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:38:43,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:38:43,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:38:43,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:38:43,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:38:43,543 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:38:43,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:38:43,543 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:38:43,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:38:43,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:38:43,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:38:43,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:38:43,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:38:43,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:38:43,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:38:43,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:38:43,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:38:43,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:38:43,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:38:43,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:38:43,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:38:43,824 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:38:43,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:38:43,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:38:43,847 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:38:43,847 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:38:43,848 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product54.cil.c [2019-10-14 23:38:43,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25bfc9171/433192f455034b8f8c0cb5428f19e922/FLAG2b6de23fd [2019-10-14 23:38:44,485 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:38:44,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product54.cil.c [2019-10-14 23:38:44,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25bfc9171/433192f455034b8f8c0cb5428f19e922/FLAG2b6de23fd [2019-10-14 23:38:44,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25bfc9171/433192f455034b8f8c0cb5428f19e922 [2019-10-14 23:38:44,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:38:44,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:38:44,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:38:44,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:38:44,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:38:44,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:38:44" (1/1) ... [2019-10-14 23:38:44,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4924bc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44, skipping insertion in model container [2019-10-14 23:38:44,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:38:44" (1/1) ... [2019-10-14 23:38:44,789 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:38:44,856 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:38:45,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:38:45,276 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:38:45,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:38:45,424 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:38:45,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:45 WrapperNode [2019-10-14 23:38:45,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:38:45,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:38:45,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:38:45,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:38:45,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:45" (1/1) ... [2019-10-14 23:38:45,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:45" (1/1) ... [2019-10-14 23:38:45,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:45" (1/1) ... [2019-10-14 23:38:45,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:45" (1/1) ... [2019-10-14 23:38:45,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:45" (1/1) ... [2019-10-14 23:38:45,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:45" (1/1) ... [2019-10-14 23:38:45,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:45" (1/1) ... [2019-10-14 23:38:45,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:38:45,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:38:45,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:38:45,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:38:45,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:45" (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 [2019-10-14 23:38:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:38:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:38:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:38:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:38:45,608 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:38:45,608 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:38:45,608 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:38:45,608 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-14 23:38:45,609 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:38:45,609 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:38:45,609 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:38:45,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:38:45,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:38:45,609 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:38:45,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:38:45,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:38:45,612 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:38:45,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:38:45,612 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:38:45,612 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:38:45,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:38:45,612 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:38:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:38:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:38:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:38:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:38:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:38:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:38:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:38:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:38:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:38:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:38:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:38:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:38:45,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:38:45,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:38:45,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:38:45,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:38:45,615 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:38:45,615 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:38:45,615 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:38:45,615 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:38:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:38:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:38:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:38:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:38:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:38:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:38:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:38:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:38:45,616 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:38:45,617 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:38:45,617 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:38:45,617 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:38:45,617 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:38:45,617 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:38:45,617 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:38:45,617 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:38:45,617 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:38:45,617 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:38:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:38:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:38:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:38:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:38:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:38:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:38:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-14 23:38:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:38:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:38:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:38:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:38:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:38:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:38:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:38:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:38:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:38:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:38:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:38:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:38:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:38:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:38:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:38:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:38:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:38:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:38:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:38:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:38:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:38:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:38:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:38:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:38:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:38:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:38:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:38:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:38:45,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:38:45,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:38:45,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:38:46,680 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:38:46,680 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:38:46,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:38:46 BoogieIcfgContainer [2019-10-14 23:38:46,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:38:46,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:38:46,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:38:46,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:38:46,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:38:44" (1/3) ... [2019-10-14 23:38:46,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f131d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:38:46, skipping insertion in model container [2019-10-14 23:38:46,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:45" (2/3) ... [2019-10-14 23:38:46,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f131d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:38:46, skipping insertion in model container [2019-10-14 23:38:46,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:38:46" (3/3) ... [2019-10-14 23:38:46,695 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product54.cil.c [2019-10-14 23:38:46,705 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:38:46,715 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:38:46,727 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:38:46,773 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:38:46,774 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:38:46,774 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:38:46,774 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:38:46,774 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:38:46,774 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:38:46,775 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:38:46,775 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:38:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2019-10-14 23:38:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:38:46,809 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:46,810 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:38:46,812 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:46,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:46,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1513268006, now seen corresponding path program 1 times [2019-10-14 23:38:46,827 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:46,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824529273] [2019-10-14 23:38:46,827 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:46,828 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:46,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,594 WARN L191 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:47,665 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824529273] [2019-10-14 23:38:47,667 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:47,668 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:38:47,668 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520467769] [2019-10-14 23:38:47,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:38:47,676 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:47,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:38:47,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:38:47,694 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 3 states. [2019-10-14 23:38:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:38:49,066 INFO L93 Difference]: Finished difference Result 344 states and 445 transitions. [2019-10-14 23:38:49,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:38:49,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:38:49,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:38:49,083 INFO L225 Difference]: With dead ends: 344 [2019-10-14 23:38:49,084 INFO L226 Difference]: Without dead ends: 185 [2019-10-14 23:38:49,089 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:38:49,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-10-14 23:38:49,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 150. [2019-10-14 23:38:49,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-14 23:38:49,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2019-10-14 23:38:49,209 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 46 [2019-10-14 23:38:49,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:38:49,209 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2019-10-14 23:38:49,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:38:49,210 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2019-10-14 23:38:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:38:49,213 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:49,214 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:38:49,214 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:49,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:49,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1135126254, now seen corresponding path program 1 times [2019-10-14 23:38:49,215 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:49,215 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842390202] [2019-10-14 23:38:49,215 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:49,215 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:49,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,556 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:49,591 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842390202] [2019-10-14 23:38:49,591 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:49,591 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:38:49,592 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966220781] [2019-10-14 23:38:49,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:38:49,594 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:49,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:38:49,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:38:49,595 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 4 states. [2019-10-14 23:38:50,080 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:38:51,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:38:51,045 INFO L93 Difference]: Finished difference Result 273 states and 332 transitions. [2019-10-14 23:38:51,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:38:51,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:38:51,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:38:51,050 INFO L225 Difference]: With dead ends: 273 [2019-10-14 23:38:51,051 INFO L226 Difference]: Without dead ends: 169 [2019-10-14 23:38:51,053 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:38:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-10-14 23:38:51,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 141. [2019-10-14 23:38:51,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-14 23:38:51,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 164 transitions. [2019-10-14 23:38:51,092 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 164 transitions. Word has length 47 [2019-10-14 23:38:51,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:38:51,092 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 164 transitions. [2019-10-14 23:38:51,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:38:51,092 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 164 transitions. [2019-10-14 23:38:51,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:38:51,095 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:51,095 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:38:51,095 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:51,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:51,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1031816634, now seen corresponding path program 1 times [2019-10-14 23:38:51,096 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:51,096 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641661115] [2019-10-14 23:38:51,096 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:51,096 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:51,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,431 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:51,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641661115] [2019-10-14 23:38:51,550 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:51,550 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:38:51,550 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262033946] [2019-10-14 23:38:51,551 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:38:51,551 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:51,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:38:51,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:38:51,552 INFO L87 Difference]: Start difference. First operand 141 states and 164 transitions. Second operand 8 states. [2019-10-14 23:38:52,010 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:38:52,365 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:38:52,640 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:52,920 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:54,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:38:54,500 INFO L93 Difference]: Finished difference Result 286 states and 350 transitions. [2019-10-14 23:38:54,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:38:54,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-14 23:38:54,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:38:54,507 INFO L225 Difference]: With dead ends: 286 [2019-10-14 23:38:54,508 INFO L226 Difference]: Without dead ends: 169 [2019-10-14 23:38:54,509 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:38:54,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-10-14 23:38:54,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 141. [2019-10-14 23:38:54,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-14 23:38:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 163 transitions. [2019-10-14 23:38:54,570 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 163 transitions. Word has length 52 [2019-10-14 23:38:54,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:38:54,571 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 163 transitions. [2019-10-14 23:38:54,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:38:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 163 transitions. [2019-10-14 23:38:54,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-14 23:38:54,573 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:54,577 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:38:54,577 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:54,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:54,578 INFO L82 PathProgramCache]: Analyzing trace with hash 276958236, now seen corresponding path program 1 times [2019-10-14 23:38:54,578 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:54,578 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958489643] [2019-10-14 23:38:54,579 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:54,579 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:54,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:54,911 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:55,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958489643] [2019-10-14 23:38:55,021 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:55,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:38:55,022 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958243057] [2019-10-14 23:38:55,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:38:55,022 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:55,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:38:55,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:38:55,023 INFO L87 Difference]: Start difference. First operand 141 states and 163 transitions. Second operand 6 states. [2019-10-14 23:38:55,441 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:38:56,668 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:38:57,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:38:57,486 INFO L93 Difference]: Finished difference Result 389 states and 479 transitions. [2019-10-14 23:38:57,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:38:57,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-10-14 23:38:57,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:38:57,491 INFO L225 Difference]: With dead ends: 389 [2019-10-14 23:38:57,491 INFO L226 Difference]: Without dead ends: 272 [2019-10-14 23:38:57,492 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:38:57,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2019-10-14 23:38:57,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 229. [2019-10-14 23:38:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2019-10-14 23:38:57,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 258 transitions. [2019-10-14 23:38:57,538 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 258 transitions. Word has length 70 [2019-10-14 23:38:57,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:38:57,538 INFO L462 AbstractCegarLoop]: Abstraction has 229 states and 258 transitions. [2019-10-14 23:38:57,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:38:57,538 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 258 transitions. [2019-10-14 23:38:57,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-14 23:38:57,540 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:57,540 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:38:57,541 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:57,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:57,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1283615481, now seen corresponding path program 1 times [2019-10-14 23:38:57,541 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:57,542 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091062067] [2019-10-14 23:38:57,542 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:57,542 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:57,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:57,896 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:58,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091062067] [2019-10-14 23:38:58,023 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:58,024 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:38:58,024 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065467776] [2019-10-14 23:38:58,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:38:58,025 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:58,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:38:58,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:38:58,026 INFO L87 Difference]: Start difference. First operand 229 states and 258 transitions. Second operand 12 states. [2019-10-14 23:38:58,566 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:38:58,943 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:38:59,215 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:59,487 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:00,108 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:01,230 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:01,532 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:01,801 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:02,063 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:02,368 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:02,672 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:04,075 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:04,498 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:05,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:05,662 INFO L93 Difference]: Finished difference Result 798 states and 1014 transitions. [2019-10-14 23:39:05,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:39:05,662 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2019-10-14 23:39:05,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:05,667 INFO L225 Difference]: With dead ends: 798 [2019-10-14 23:39:05,667 INFO L226 Difference]: Without dead ends: 593 [2019-10-14 23:39:05,669 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:39:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-10-14 23:39:05,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 531. [2019-10-14 23:39:05,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-10-14 23:39:05,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 618 transitions. [2019-10-14 23:39:05,786 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 618 transitions. Word has length 84 [2019-10-14 23:39:05,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:05,787 INFO L462 AbstractCegarLoop]: Abstraction has 531 states and 618 transitions. [2019-10-14 23:39:05,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:39:05,787 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 618 transitions. [2019-10-14 23:39:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-14 23:39:05,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:05,791 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:05,791 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:05,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:05,792 INFO L82 PathProgramCache]: Analyzing trace with hash -836442027, now seen corresponding path program 1 times [2019-10-14 23:39:05,792 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:05,792 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840284092] [2019-10-14 23:39:05,793 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:05,793 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:05,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,109 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,291 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:39:06,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840284092] [2019-10-14 23:39:06,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982633563] [2019-10-14 23:39:06,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-14 23:39:06,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:06,733 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:39:06,733 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2019-10-14 23:39:06,733 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64228751] [2019-10-14 23:39:06,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:39:06,734 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:06,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:39:06,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:39:06,735 INFO L87 Difference]: Start difference. First operand 531 states and 618 transitions. Second operand 8 states. [2019-10-14 23:39:08,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:08,381 INFO L93 Difference]: Finished difference Result 1368 states and 1758 transitions. [2019-10-14 23:39:08,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:39:08,381 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 141 [2019-10-14 23:39:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:08,390 INFO L225 Difference]: With dead ends: 1368 [2019-10-14 23:39:08,390 INFO L226 Difference]: Without dead ends: 976 [2019-10-14 23:39:08,392 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:39:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2019-10-14 23:39:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 892. [2019-10-14 23:39:08,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2019-10-14 23:39:08,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1083 transitions. [2019-10-14 23:39:08,598 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1083 transitions. Word has length 141 [2019-10-14 23:39:08,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:08,598 INFO L462 AbstractCegarLoop]: Abstraction has 892 states and 1083 transitions. [2019-10-14 23:39:08,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:39:08,598 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1083 transitions. [2019-10-14 23:39:08,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-14 23:39:08,602 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:08,602 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:08,809 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:08,809 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:08,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:08,809 INFO L82 PathProgramCache]: Analyzing trace with hash 974208917, now seen corresponding path program 1 times [2019-10-14 23:39:08,809 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:08,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895578326] [2019-10-14 23:39:08,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:08,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:08,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,102 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:39:09,283 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895578326] [2019-10-14 23:39:09,283 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617155814] [2019-10-14 23:39:09,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:09,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 23:39:09,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:39:09,560 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:39:09,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2019-10-14 23:39:09,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948660723] [2019-10-14 23:39:09,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:39:09,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:09,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:39:09,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:39:09,562 INFO L87 Difference]: Start difference. First operand 892 states and 1083 transitions. Second operand 6 states. [2019-10-14 23:39:09,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:09,776 INFO L93 Difference]: Finished difference Result 1780 states and 2210 transitions. [2019-10-14 23:39:09,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:39:09,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-10-14 23:39:09,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:09,783 INFO L225 Difference]: With dead ends: 1780 [2019-10-14 23:39:09,783 INFO L226 Difference]: Without dead ends: 912 [2019-10-14 23:39:09,786 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:39:09,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2019-10-14 23:39:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 912. [2019-10-14 23:39:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2019-10-14 23:39:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1107 transitions. [2019-10-14 23:39:09,955 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1107 transitions. Word has length 133 [2019-10-14 23:39:09,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:09,956 INFO L462 AbstractCegarLoop]: Abstraction has 912 states and 1107 transitions. [2019-10-14 23:39:09,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:39:09,956 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1107 transitions. [2019-10-14 23:39:09,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-14 23:39:09,959 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:09,959 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:10,163 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:10,164 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:10,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:10,164 INFO L82 PathProgramCache]: Analyzing trace with hash -168293549, now seen corresponding path program 1 times [2019-10-14 23:39:10,165 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:10,165 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733195253] [2019-10-14 23:39:10,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:10,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:10,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,543 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:39:10,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733195253] [2019-10-14 23:39:10,768 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090135055] [2019-10-14 23:39:10,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:39:10,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:11,013 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:39:11,013 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:39:11,013 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 12 [2019-10-14 23:39:11,014 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527491463] [2019-10-14 23:39:11,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:39:11,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:11,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:39:11,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:39:11,015 INFO L87 Difference]: Start difference. First operand 912 states and 1107 transitions. Second operand 5 states. [2019-10-14 23:39:11,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:11,186 INFO L93 Difference]: Finished difference Result 1661 states and 2060 transitions. [2019-10-14 23:39:11,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:39:11,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2019-10-14 23:39:11,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:11,192 INFO L225 Difference]: With dead ends: 1661 [2019-10-14 23:39:11,192 INFO L226 Difference]: Without dead ends: 773 [2019-10-14 23:39:11,195 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:39:11,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2019-10-14 23:39:11,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2019-10-14 23:39:11,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2019-10-14 23:39:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 923 transitions. [2019-10-14 23:39:11,339 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 923 transitions. Word has length 133 [2019-10-14 23:39:11,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:11,339 INFO L462 AbstractCegarLoop]: Abstraction has 773 states and 923 transitions. [2019-10-14 23:39:11,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:39:11,339 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 923 transitions. [2019-10-14 23:39:11,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-14 23:39:11,341 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:11,341 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:39:11,547 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:11,547 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:11,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:11,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1514396760, now seen corresponding path program 1 times [2019-10-14 23:39:11,548 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:11,549 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798841210] [2019-10-14 23:39:11,549 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:11,549 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:11,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,853 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:39:12,040 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798841210] [2019-10-14 23:39:12,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881616650] [2019-10-14 23:39:12,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:12,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 23:39:12,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:12,550 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:39:12,551 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-10-14 23:39:12,551 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151015452] [2019-10-14 23:39:12,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-14 23:39:12,552 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:12,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-14 23:39:12,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:39:12,553 INFO L87 Difference]: Start difference. First operand 773 states and 923 transitions. Second operand 20 states. [2019-10-14 23:39:13,382 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:14,356 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:14,699 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:15,272 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:17,311 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:17,728 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:18,085 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:18,387 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:18,934 WARN L191 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2019-10-14 23:39:19,259 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:19,575 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:19,865 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:20,167 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:20,708 WARN L191 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2019-10-14 23:39:21,039 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-14 23:39:21,353 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192