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_spec2_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:36:12,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:36:12,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:36:12,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:36:12,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:36:12,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:36:12,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:36:12,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:36:12,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:36:12,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:36:12,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:36:12,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:36:12,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:36:12,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:36:12,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:36:12,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:36:12,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:36:12,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:36:12,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:36:12,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:36:12,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:36:12,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:36:12,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:36:12,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:36:12,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:36:12,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:36:12,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:36:12,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:36:12,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:36:12,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:36:12,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:36:12,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:36:12,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:36:12,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:36:12,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:36:12,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:36:12,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:36:12,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:36:12,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:36:12,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:36:12,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:36:12,495 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 23:36:12,509 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:36:12,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:36:12,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:36:12,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:36:12,511 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:36:12,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:36:12,512 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:36:12,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:36:12,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:36:12,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:36:12,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:36:12,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:36:12,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:36:12,513 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:36:12,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:36:12,513 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:36:12,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:36:12,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:36:12,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:36:12,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:36:12,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:36:12,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:12,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:36:12,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:36:12,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:36:12,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:36:12,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:36:12,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:36:12,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:36:12,814 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:36:12,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:36:12,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:36:12,833 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:36:12,833 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:36:12,834 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product59.cil.c [2019-10-14 23:36:12,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be47bafcf/ac270b8ee3384a0981447694626cc469/FLAG42f3ccb56 [2019-10-14 23:36:13,415 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:36:13,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product59.cil.c [2019-10-14 23:36:13,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be47bafcf/ac270b8ee3384a0981447694626cc469/FLAG42f3ccb56 [2019-10-14 23:36:13,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be47bafcf/ac270b8ee3384a0981447694626cc469 [2019-10-14 23:36:13,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:36:13,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:36:13,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:13,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:36:13,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:36:13,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e394a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:13, skipping insertion in model container [2019-10-14 23:36:13,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:13" (1/1) ... [2019-10-14 23:36:13,775 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:36:13,824 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:36:14,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:14,260 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:36:14,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:14,452 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:36:14,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:14 WrapperNode [2019-10-14 23:36:14,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:14,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:36:14,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:36:14,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:36:14,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:14" (1/1) ... [2019-10-14 23:36:14,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:14" (1/1) ... [2019-10-14 23:36:14,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:14" (1/1) ... [2019-10-14 23:36:14,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:14" (1/1) ... [2019-10-14 23:36:14,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:14" (1/1) ... [2019-10-14 23:36:14,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:14" (1/1) ... [2019-10-14 23:36:14,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:14" (1/1) ... [2019-10-14 23:36:14,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:36:14,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:36:14,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:36:14,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:36:14,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:14" (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 23:36:14,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:36:14,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:36:14,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:14,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:36:14,611 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:36:14,611 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:36:14,612 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:14,612 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:36:14,612 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:36:14,612 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:36:14,612 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:36:14,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:36:14,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:36:14,613 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:36:14,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:36:14,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:36:14,613 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:36:14,614 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:36:14,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:36:14,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:36:14,614 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:36:14,614 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:36:14,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:36:14,615 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:36:14,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:36:14,615 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:36:14,615 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:36:14,615 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:36:14,616 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:36:14,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:14,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:14,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:14,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:36:14,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:36:14,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:36:14,617 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:36:14,617 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:36:14,617 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:36:14,617 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:36:14,617 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:36:14,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:36:14,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:36:14,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:36:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:36:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:36:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:36:14,619 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:36:14,619 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:36:14,619 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:36:14,619 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:36:14,619 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:36:14,619 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:36:14,620 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:36:14,620 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:36:14,620 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:36:14,620 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:36:14,620 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:36:14,620 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:36:14,620 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:36:14,621 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:36:14,621 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:36:14,621 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:36:14,621 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:14,621 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:36:14,621 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:36:14,622 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:36:14,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:36:14,622 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:36:14,622 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:36:14,622 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:36:14,622 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:36:14,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:36:14,623 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:36:14,623 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:36:14,623 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:36:14,623 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:36:14,623 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:36:14,623 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:36:14,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:36:14,624 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:36:14,624 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:36:14,624 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:36:14,624 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:36:14,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:36:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:36:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:36:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:36:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:36:14,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:14,626 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:14,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:36:14,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:36:14,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:36:14,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:36:14,626 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:36:14,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:36:14,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:36:14,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:36:15,725 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:36:15,725 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:36:15,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:15 BoogieIcfgContainer [2019-10-14 23:36:15,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:36:15,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:36:15,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:36:15,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:36:15,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:36:13" (1/3) ... [2019-10-14 23:36:15,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297dbd18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:15, skipping insertion in model container [2019-10-14 23:36:15,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:14" (2/3) ... [2019-10-14 23:36:15,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297dbd18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:15, skipping insertion in model container [2019-10-14 23:36:15,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:15" (3/3) ... [2019-10-14 23:36:15,735 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product59.cil.c [2019-10-14 23:36:15,746 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:36:15,755 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:36:15,767 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:36:15,802 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:36:15,803 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:36:15,803 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:36:15,803 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:36:15,804 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:36:15,804 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:36:15,804 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:36:15,804 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:36:15,833 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states. [2019-10-14 23:36:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:36:15,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:15,844 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] [2019-10-14 23:36:15,846 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:15,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:15,853 INFO L82 PathProgramCache]: Analyzing trace with hash -2013010426, now seen corresponding path program 1 times [2019-10-14 23:36:15,862 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:15,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836581806] [2019-10-14 23:36:15,863 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:15,863 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:15,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,606 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,725 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 23:36:16,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836581806] [2019-10-14 23:36:16,727 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:16,728 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:36:16,729 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750337120] [2019-10-14 23:36:16,735 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:36:16,736 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:16,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:36:16,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:16,754 INFO L87 Difference]: Start difference. First operand 194 states. Second operand 4 states. [2019-10-14 23:36:18,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:18,129 INFO L93 Difference]: Finished difference Result 337 states and 436 transitions. [2019-10-14 23:36:18,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:36:18,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-14 23:36:18,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:18,147 INFO L225 Difference]: With dead ends: 337 [2019-10-14 23:36:18,147 INFO L226 Difference]: Without dead ends: 187 [2019-10-14 23:36:18,152 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:18,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2019-10-14 23:36:18,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 151. [2019-10-14 23:36:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-10-14 23:36:18,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 178 transitions. [2019-10-14 23:36:18,255 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 178 transitions. Word has length 51 [2019-10-14 23:36:18,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:18,256 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 178 transitions. [2019-10-14 23:36:18,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:36:18,257 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 178 transitions. [2019-10-14 23:36:18,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:36:18,260 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:18,260 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 23:36:18,261 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:18,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:18,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1660126963, now seen corresponding path program 1 times [2019-10-14 23:36:18,262 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:18,262 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484650167] [2019-10-14 23:36:18,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:18,263 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:18,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:18,699 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:18,750 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 23:36:18,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484650167] [2019-10-14 23:36:18,751 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:18,751 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:36:18,751 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766843939] [2019-10-14 23:36:18,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:36:18,754 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:18,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:36:18,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:36:18,754 INFO L87 Difference]: Start difference. First operand 151 states and 178 transitions. Second operand 5 states. [2019-10-14 23:36:19,339 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:20,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:20,452 INFO L93 Difference]: Finished difference Result 276 states and 339 transitions. [2019-10-14 23:36:20,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:36:20,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-14 23:36:20,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:20,463 INFO L225 Difference]: With dead ends: 276 [2019-10-14 23:36:20,463 INFO L226 Difference]: Without dead ends: 177 [2019-10-14 23:36:20,468 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:36:20,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-10-14 23:36:20,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 142. [2019-10-14 23:36:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-10-14 23:36:20,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2019-10-14 23:36:20,513 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 52 [2019-10-14 23:36:20,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:20,514 INFO L462 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2019-10-14 23:36:20,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:36:20,514 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2019-10-14 23:36:20,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 23:36:20,516 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:20,516 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] [2019-10-14 23:36:20,517 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:20,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:20,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1605789181, now seen corresponding path program 1 times [2019-10-14 23:36:20,518 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:20,518 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477496562] [2019-10-14 23:36:20,518 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:20,518 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:20,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,934 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:21,027 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 23:36:21,028 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477496562] [2019-10-14 23:36:21,028 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:21,028 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:36:21,029 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937599565] [2019-10-14 23:36:21,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:36:21,029 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:21,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:36:21,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:36:21,030 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand 9 states. [2019-10-14 23:36:21,488 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:21,882 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:22,147 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:22,408 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:23,344 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:25,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:25,686 INFO L93 Difference]: Finished difference Result 478 states and 598 transitions. [2019-10-14 23:36:25,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:25,687 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2019-10-14 23:36:25,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:25,692 INFO L225 Difference]: With dead ends: 478 [2019-10-14 23:36:25,692 INFO L226 Difference]: Without dead ends: 364 [2019-10-14 23:36:25,694 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:36:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2019-10-14 23:36:25,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 299. [2019-10-14 23:36:25,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2019-10-14 23:36:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 362 transitions. [2019-10-14 23:36:25,774 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 362 transitions. Word has length 56 [2019-10-14 23:36:25,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:25,774 INFO L462 AbstractCegarLoop]: Abstraction has 299 states and 362 transitions. [2019-10-14 23:36:25,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:36:25,775 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 362 transitions. [2019-10-14 23:36:25,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-14 23:36:25,778 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:25,778 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] [2019-10-14 23:36:25,778 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:25,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:25,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1990007725, now seen corresponding path program 1 times [2019-10-14 23:36:25,779 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:25,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006115660] [2019-10-14 23:36:25,779 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:25,779 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:25,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,124 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:26,215 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 23:36:26,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006115660] [2019-10-14 23:36:26,216 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:26,216 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:36:26,216 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154896610] [2019-10-14 23:36:26,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:36:26,217 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:26,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:36:26,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:36:26,218 INFO L87 Difference]: Start difference. First operand 299 states and 362 transitions. Second operand 9 states. [2019-10-14 23:36:26,655 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:27,971 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:28,349 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:28,686 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:29,036 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:30,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:30,579 INFO L93 Difference]: Finished difference Result 955 states and 1245 transitions. [2019-10-14 23:36:30,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:36:30,579 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-10-14 23:36:30,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:30,585 INFO L225 Difference]: With dead ends: 955 [2019-10-14 23:36:30,586 INFO L226 Difference]: Without dead ends: 684 [2019-10-14 23:36:30,588 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:36:30,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2019-10-14 23:36:30,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 546. [2019-10-14 23:36:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-10-14 23:36:30,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 664 transitions. [2019-10-14 23:36:30,735 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 664 transitions. Word has length 62 [2019-10-14 23:36:30,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:30,736 INFO L462 AbstractCegarLoop]: Abstraction has 546 states and 664 transitions. [2019-10-14 23:36:30,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:36:30,736 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 664 transitions. [2019-10-14 23:36:30,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-14 23:36:30,740 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:30,740 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] [2019-10-14 23:36:30,740 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:30,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:30,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1656310289, now seen corresponding path program 1 times [2019-10-14 23:36:30,741 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:30,741 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636347771] [2019-10-14 23:36:30,741 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:30,741 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:30,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,055 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:31,157 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 23:36:31,157 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636347771] [2019-10-14 23:36:31,157 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:31,157 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:31,158 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899913145] [2019-10-14 23:36:31,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:31,158 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:31,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:31,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:31,159 INFO L87 Difference]: Start difference. First operand 546 states and 664 transitions. Second operand 10 states. [2019-10-14 23:36:31,677 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:32,847 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:33,153 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:33,448 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:34,168 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:35,207 INFO L93 Difference]: Finished difference Result 1483 states and 2002 transitions. [2019-10-14 23:36:35,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-14 23:36:35,208 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-10-14 23:36:35,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:35,219 INFO L225 Difference]: With dead ends: 1483 [2019-10-14 23:36:35,219 INFO L226 Difference]: Without dead ends: 965 [2019-10-14 23:36:35,222 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-10-14 23:36:35,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2019-10-14 23:36:35,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 769. [2019-10-14 23:36:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2019-10-14 23:36:35,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 931 transitions. [2019-10-14 23:36:35,400 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 931 transitions. Word has length 66 [2019-10-14 23:36:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:35,401 INFO L462 AbstractCegarLoop]: Abstraction has 769 states and 931 transitions. [2019-10-14 23:36:35,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:35,401 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 931 transitions. [2019-10-14 23:36:35,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-14 23:36:35,404 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:35,405 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:35,405 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:35,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:35,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1069328684, now seen corresponding path program 1 times [2019-10-14 23:36:35,406 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:35,406 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562752110] [2019-10-14 23:36:35,406 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:35,406 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:35,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,680 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:35,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:35,890 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562752110] [2019-10-14 23:36:35,891 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:35,892 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:35,892 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420788044] [2019-10-14 23:36:35,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:35,893 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:35,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:35,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:35,894 INFO L87 Difference]: Start difference. First operand 769 states and 931 transitions. Second operand 10 states. [2019-10-14 23:36:37,147 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:37,474 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:36:37,755 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:38,039 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:39,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:39,153 INFO L93 Difference]: Finished difference Result 1790 states and 2419 transitions. [2019-10-14 23:36:39,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:39,153 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2019-10-14 23:36:39,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:39,163 INFO L225 Difference]: With dead ends: 1790 [2019-10-14 23:36:39,164 INFO L226 Difference]: Without dead ends: 1049 [2019-10-14 23:36:39,167 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:36:39,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2019-10-14 23:36:39,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 795. [2019-10-14 23:36:39,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2019-10-14 23:36:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 959 transitions. [2019-10-14 23:36:39,308 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 959 transitions. Word has length 103 [2019-10-14 23:36:39,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:39,309 INFO L462 AbstractCegarLoop]: Abstraction has 795 states and 959 transitions. [2019-10-14 23:36:39,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:39,309 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 959 transitions. [2019-10-14 23:36:39,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-14 23:36:39,311 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:39,312 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:39,312 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:39,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:39,312 INFO L82 PathProgramCache]: Analyzing trace with hash 858944018, now seen corresponding path program 1 times [2019-10-14 23:36:39,313 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:39,313 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470630680] [2019-10-14 23:36:39,313 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:39,313 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:39,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,581 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:39,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470630680] [2019-10-14 23:36:39,742 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:39,742 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:36:39,742 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426097724] [2019-10-14 23:36:39,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:36:39,743 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:39,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:36:39,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:36:39,744 INFO L87 Difference]: Start difference. First operand 795 states and 959 transitions. Second operand 12 states. [2019-10-14 23:36:40,548 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:40,817 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:41,075 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:41,951 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:42,275 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:42,575 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:44,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:44,300 INFO L93 Difference]: Finished difference Result 1836 states and 2467 transitions. [2019-10-14 23:36:44,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:36:44,300 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2019-10-14 23:36:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:44,308 INFO L225 Difference]: With dead ends: 1836 [2019-10-14 23:36:44,308 INFO L226 Difference]: Without dead ends: 1069 [2019-10-14 23:36:44,311 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:36:44,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2019-10-14 23:36:44,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 811. [2019-10-14 23:36:44,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2019-10-14 23:36:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 975 transitions. [2019-10-14 23:36:44,451 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 975 transitions. Word has length 103 [2019-10-14 23:36:44,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:44,451 INFO L462 AbstractCegarLoop]: Abstraction has 811 states and 975 transitions. [2019-10-14 23:36:44,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:36:44,452 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 975 transitions. [2019-10-14 23:36:44,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-14 23:36:44,454 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:44,454 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:44,455 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:44,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:44,455 INFO L82 PathProgramCache]: Analyzing trace with hash 618403889, now seen corresponding path program 1 times [2019-10-14 23:36:44,455 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:44,455 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068211695] [2019-10-14 23:36:44,456 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:44,456 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:44,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,725 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:44,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068211695] [2019-10-14 23:36:44,886 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:44,886 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:44,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563098969] [2019-10-14 23:36:44,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:44,887 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:44,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:44,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:44,888 INFO L87 Difference]: Start difference. First operand 811 states and 975 transitions. Second operand 8 states. [2019-10-14 23:36:45,470 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:46,060 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:48,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:48,969 INFO L93 Difference]: Finished difference Result 2738 states and 3725 transitions. [2019-10-14 23:36:48,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-14 23:36:48,969 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-10-14 23:36:48,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:48,983 INFO L225 Difference]: With dead ends: 2738 [2019-10-14 23:36:48,983 INFO L226 Difference]: Without dead ends: 1955 [2019-10-14 23:36:48,987 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-10-14 23:36:48,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2019-10-14 23:36:49,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1611. [2019-10-14 23:36:49,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1611 states. [2019-10-14 23:36:49,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 1965 transitions. [2019-10-14 23:36:49,364 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 1965 transitions. Word has length 103 [2019-10-14 23:36:49,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:49,364 INFO L462 AbstractCegarLoop]: Abstraction has 1611 states and 1965 transitions. [2019-10-14 23:36:49,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:49,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 1965 transitions. [2019-10-14 23:36:49,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-14 23:36:49,368 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:49,369 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:49,369 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:49,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:49,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1230367511, now seen corresponding path program 1 times [2019-10-14 23:36:49,370 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:49,370 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760476743] [2019-10-14 23:36:49,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:49,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:49,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,776 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:36:50,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760476743] [2019-10-14 23:36:50,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932653855] [2019-10-14 23:36:50,120 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 23:36:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:50,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:36:50,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:36:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:50,568 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:36:50,569 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2019-10-14 23:36:50,569 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771525241] [2019-10-14 23:36:50,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:50,570 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:50,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:50,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:36:50,571 INFO L87 Difference]: Start difference. First operand 1611 states and 1965 transitions. Second operand 8 states. [2019-10-14 23:36:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:51,262 INFO L93 Difference]: Finished difference Result 3124 states and 3830 transitions. [2019-10-14 23:36:51,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:36:51,262 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-10-14 23:36:51,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:51,272 INFO L225 Difference]: With dead ends: 3124 [2019-10-14 23:36:51,272 INFO L226 Difference]: Without dead ends: 1541 [2019-10-14 23:36:51,277 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:36:51,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states.