/usr/bin/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_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:59:20,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:59:20,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:59:20,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:59:20,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:59:20,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:59:20,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:59:20,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:59:20,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:59:20,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:59:20,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:59:20,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:59:20,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:59:20,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:59:20,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:59:20,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:59:20,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:59:20,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:59:20,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:59:20,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:59:20,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:59:20,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:59:20,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:59:20,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:59:20,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:59:20,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:59:20,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:59:20,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:59:20,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:59:20,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:59:20,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:59:20,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:59:20,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:59:20,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:59:20,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:59:20,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:59:20,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:59:20,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:59:20,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:59:20,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:59:20,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:59:20,471 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 [2019-11-06 21:59:20,485 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:59:20,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:59:20,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:59:20,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:59:20,487 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:59:20,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:59:20,487 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:59:20,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:59:20,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:59:20,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:59:20,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:59:20,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:59:20,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:59:20,489 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:59:20,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:59:20,489 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:59:20,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:59:20,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:59:20,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:59:20,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:59:20,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:59:20,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:59:20,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:59:20,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:59:20,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:59:20,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:59:20,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:59:20,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:59:20,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:59:20,782 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:59:20,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:59:20,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:59:20,805 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:59:20,805 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:59:20,806 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2019-11-06 21:59:20,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27fd43241/6bc16ea8a337495791da6166a6bfbe01/FLAG6287c150d [2019-11-06 21:59:21,445 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:59:21,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2019-11-06 21:59:21,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27fd43241/6bc16ea8a337495791da6166a6bfbe01/FLAG6287c150d [2019-11-06 21:59:21,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27fd43241/6bc16ea8a337495791da6166a6bfbe01 [2019-11-06 21:59:21,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:59:21,751 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:59:21,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:59:21,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:59:21,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:59:21,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:21" (1/1) ... [2019-11-06 21:59:21,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312b99b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:21, skipping insertion in model container [2019-11-06 21:59:21,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:21" (1/1) ... [2019-11-06 21:59:21,766 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:59:21,812 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:59:22,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:59:22,292 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:59:22,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:59:22,456 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:59:22,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:22 WrapperNode [2019-11-06 21:59:22,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:59:22,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:59:22,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:59:22,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:59:22,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:22" (1/1) ... [2019-11-06 21:59:22,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:22" (1/1) ... [2019-11-06 21:59:22,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:22" (1/1) ... [2019-11-06 21:59:22,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:22" (1/1) ... [2019-11-06 21:59:22,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:22" (1/1) ... [2019-11-06 21:59:22,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:22" (1/1) ... [2019-11-06 21:59:22,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:22" (1/1) ... [2019-11-06 21:59:22,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:59:22,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:59:22,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:59:22,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:59:22,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:22" (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 [2019-11-06 21:59:22,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:59:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:59:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:59:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 21:59:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 21:59:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 21:59:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 21:59:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 21:59:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 21:59:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 21:59:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 21:59:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:59:22,628 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:59:22,628 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:59:22,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:59:22,628 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:59:22,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:59:22,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:59:22,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:59:22,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:59:22,629 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:59:22,629 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:59:22,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:59:22,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:59:22,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:59:22,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:59:22,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:59:22,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:59:22,630 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:59:22,631 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 21:59:22,631 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:59:22,631 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 21:59:22,631 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 21:59:22,631 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 21:59:22,631 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 21:59:22,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 21:59:22,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 21:59:22,632 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 21:59:22,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 21:59:22,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 21:59:22,632 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-06 21:59:22,632 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-06 21:59:22,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:59:22,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:59:22,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:59:22,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:59:22,633 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:59:22,633 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 21:59:22,634 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 21:59:22,634 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 21:59:22,634 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 21:59:22,634 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 21:59:22,634 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 21:59:22,634 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 21:59:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 21:59:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:59:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:59:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:59:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:59:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 21:59:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:59:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:59:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:59:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:59:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:59:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:59:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:59:22,637 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:59:22,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:59:22,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:59:22,637 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-06 21:59:22,637 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-06 21:59:22,637 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:59:22,638 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:59:22,638 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:59:22,638 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:59:22,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:59:22,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:59:22,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:59:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:59:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:59:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:59:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:59:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:59:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:59:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:59:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:59:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:59:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 21:59:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 21:59:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 21:59:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:59:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 21:59:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 21:59:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 21:59:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:59:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 21:59:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 21:59:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 21:59:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:59:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:59:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:59:23,972 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:59:23,972 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:59:23,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:23 BoogieIcfgContainer [2019-11-06 21:59:23,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:59:23,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:59:23,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:59:23,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:59:23,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:59:21" (1/3) ... [2019-11-06 21:59:23,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cc76fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:23, skipping insertion in model container [2019-11-06 21:59:23,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:22" (2/3) ... [2019-11-06 21:59:23,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cc76fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:23, skipping insertion in model container [2019-11-06 21:59:23,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:23" (3/3) ... [2019-11-06 21:59:23,982 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product60.cil.c [2019-11-06 21:59:23,992 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:59:24,001 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:59:24,012 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:59:24,040 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:59:24,040 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:59:24,040 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:59:24,040 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:59:24,041 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:59:24,041 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:59:24,041 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:59:24,041 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:59:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2019-11-06 21:59:24,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 21:59:24,075 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:24,076 INFO L410 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] [2019-11-06 21:59:24,078 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:24,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:24,084 INFO L82 PathProgramCache]: Analyzing trace with hash 694173544, now seen corresponding path program 1 times [2019-11-06 21:59:24,093 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:24,094 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38611481] [2019-11-06 21:59:24,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:24,834 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:24,954 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38611481] [2019-11-06 21:59:24,956 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:24,956 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:59:24,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466510058] [2019-11-06 21:59:24,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:59:24,964 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:24,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:59:24,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:59:24,983 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 4 states. [2019-11-06 21:59:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:26,389 INFO L93 Difference]: Finished difference Result 347 states and 448 transitions. [2019-11-06 21:59:26,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:59:26,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-11-06 21:59:26,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:26,409 INFO L225 Difference]: With dead ends: 347 [2019-11-06 21:59:26,409 INFO L226 Difference]: Without dead ends: 193 [2019-11-06 21:59:26,414 INFO L630 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 [2019-11-06 21:59:26,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-11-06 21:59:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 155. [2019-11-06 21:59:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-11-06 21:59:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 182 transitions. [2019-11-06 21:59:26,528 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 182 transitions. Word has length 51 [2019-11-06 21:59:26,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:26,528 INFO L462 AbstractCegarLoop]: Abstraction has 155 states and 182 transitions. [2019-11-06 21:59:26,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:59:26,529 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 182 transitions. [2019-11-06 21:59:26,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 21:59:26,532 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:26,533 INFO L410 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] [2019-11-06 21:59:26,533 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:26,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:26,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1863175654, now seen corresponding path program 1 times [2019-11-06 21:59:26,534 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:26,534 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949249874] [2019-11-06 21:59:26,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:27,002 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:27,047 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949249874] [2019-11-06 21:59:27,047 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:27,047 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:59:27,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19353502] [2019-11-06 21:59:27,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:59:27,049 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:27,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:59:27,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:59:27,050 INFO L87 Difference]: Start difference. First operand 155 states and 182 transitions. Second operand 5 states. [2019-11-06 21:59:27,672 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:28,862 INFO L93 Difference]: Finished difference Result 282 states and 347 transitions. [2019-11-06 21:59:28,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:59:28,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-11-06 21:59:28,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:28,867 INFO L225 Difference]: With dead ends: 282 [2019-11-06 21:59:28,868 INFO L226 Difference]: Without dead ends: 183 [2019-11-06 21:59:28,870 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:59:28,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-11-06 21:59:28,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 146. [2019-11-06 21:59:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-06 21:59:28,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 170 transitions. [2019-11-06 21:59:28,911 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 170 transitions. Word has length 52 [2019-11-06 21:59:28,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:28,912 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 170 transitions. [2019-11-06 21:59:28,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:59:28,912 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 170 transitions. [2019-11-06 21:59:28,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 21:59:28,914 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:28,915 INFO L410 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] [2019-11-06 21:59:28,915 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:28,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:28,915 INFO L82 PathProgramCache]: Analyzing trace with hash 284161781, now seen corresponding path program 1 times [2019-11-06 21:59:28,916 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:28,916 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488185358] [2019-11-06 21:59:28,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:29,275 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:29,364 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488185358] [2019-11-06 21:59:29,364 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:29,364 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:59:29,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381546866] [2019-11-06 21:59:29,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:59:29,366 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:29,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:59:29,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:59:29,367 INFO L87 Difference]: Start difference. First operand 146 states and 170 transitions. Second operand 9 states. [2019-11-06 21:59:29,872 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:30,237 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:30,507 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:30,786 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:31,666 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:33,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:33,852 INFO L93 Difference]: Finished difference Result 494 states and 617 transitions. [2019-11-06 21:59:33,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 21:59:33,852 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-11-06 21:59:33,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:33,858 INFO L225 Difference]: With dead ends: 494 [2019-11-06 21:59:33,858 INFO L226 Difference]: Without dead ends: 376 [2019-11-06 21:59:33,859 INFO L630 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 [2019-11-06 21:59:33,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2019-11-06 21:59:33,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 303. [2019-11-06 21:59:33,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2019-11-06 21:59:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 366 transitions. [2019-11-06 21:59:33,947 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 366 transitions. Word has length 57 [2019-11-06 21:59:33,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:33,947 INFO L462 AbstractCegarLoop]: Abstraction has 303 states and 366 transitions. [2019-11-06 21:59:33,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:59:33,947 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 366 transitions. [2019-11-06 21:59:33,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-06 21:59:33,950 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:33,951 INFO L410 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] [2019-11-06 21:59:33,951 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:33,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:33,951 INFO L82 PathProgramCache]: Analyzing trace with hash 367003092, now seen corresponding path program 1 times [2019-11-06 21:59:33,951 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:33,952 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962665734] [2019-11-06 21:59:33,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:34,266 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:34,374 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962665734] [2019-11-06 21:59:34,374 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:34,375 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:59:34,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559574616] [2019-11-06 21:59:34,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:59:34,376 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:34,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:59:34,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:59:34,378 INFO L87 Difference]: Start difference. First operand 303 states and 366 transitions. Second operand 9 states. [2019-11-06 21:59:34,889 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:36,169 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:36,565 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:36,926 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:37,266 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:39,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:39,014 INFO L93 Difference]: Finished difference Result 974 states and 1274 transitions. [2019-11-06 21:59:39,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-06 21:59:39,015 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-11-06 21:59:39,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:39,022 INFO L225 Difference]: With dead ends: 974 [2019-11-06 21:59:39,023 INFO L226 Difference]: Without dead ends: 699 [2019-11-06 21:59:39,025 INFO L630 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 [2019-11-06 21:59:39,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2019-11-06 21:59:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 554. [2019-11-06 21:59:39,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-11-06 21:59:39,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 672 transitions. [2019-11-06 21:59:39,168 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 672 transitions. Word has length 62 [2019-11-06 21:59:39,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:39,168 INFO L462 AbstractCegarLoop]: Abstraction has 554 states and 672 transitions. [2019-11-06 21:59:39,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:59:39,169 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 672 transitions. [2019-11-06 21:59:39,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-11-06 21:59:39,172 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:39,176 INFO L410 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] [2019-11-06 21:59:39,176 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:39,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:39,176 INFO L82 PathProgramCache]: Analyzing trace with hash -612062288, now seen corresponding path program 1 times [2019-11-06 21:59:39,178 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:39,178 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132033618] [2019-11-06 21:59:39,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:39,514 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:39,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:39,637 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132033618] [2019-11-06 21:59:39,637 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:39,637 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:59:39,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604113407] [2019-11-06 21:59:39,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:59:39,640 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:39,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:59:39,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:59:39,641 INFO L87 Difference]: Start difference. First operand 554 states and 672 transitions. Second operand 10 states. [2019-11-06 21:59:40,143 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:41,311 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:41,628 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:41,939 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:42,741 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:44,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:44,148 INFO L93 Difference]: Finished difference Result 1517 states and 2050 transitions. [2019-11-06 21:59:44,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-06 21:59:44,149 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-11-06 21:59:44,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:44,156 INFO L225 Difference]: With dead ends: 1517 [2019-11-06 21:59:44,157 INFO L226 Difference]: Without dead ends: 991 [2019-11-06 21:59:44,159 INFO L630 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 [2019-11-06 21:59:44,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2019-11-06 21:59:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 785. [2019-11-06 21:59:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2019-11-06 21:59:44,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 947 transitions. [2019-11-06 21:59:44,315 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 947 transitions. Word has length 66 [2019-11-06 21:59:44,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:44,316 INFO L462 AbstractCegarLoop]: Abstraction has 785 states and 947 transitions. [2019-11-06 21:59:44,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:59:44,316 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 947 transitions. [2019-11-06 21:59:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-06 21:59:44,319 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:44,319 INFO L410 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] [2019-11-06 21:59:44,319 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:44,320 INFO L82 PathProgramCache]: Analyzing trace with hash 637474211, now seen corresponding path program 1 times [2019-11-06 21:59:44,320 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:44,320 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848626680] [2019-11-06 21:59:44,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,575 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:59:44,719 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848626680] [2019-11-06 21:59:44,719 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:44,719 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:59:44,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813356585] [2019-11-06 21:59:44,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:59:44,720 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:44,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:59:44,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:59:44,721 INFO L87 Difference]: Start difference. First operand 785 states and 947 transitions. Second operand 10 states. [2019-11-06 21:59:45,975 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:46,259 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 21:59:46,562 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:46,821 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:48,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:48,382 INFO L93 Difference]: Finished difference Result 1830 states and 2467 transitions. [2019-11-06 21:59:48,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 21:59:48,383 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2019-11-06 21:59:48,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:48,394 INFO L225 Difference]: With dead ends: 1830 [2019-11-06 21:59:48,394 INFO L226 Difference]: Without dead ends: 1073 [2019-11-06 21:59:48,398 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:59:48,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2019-11-06 21:59:48,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 811. [2019-11-06 21:59:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2019-11-06 21:59:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 975 transitions. [2019-11-06 21:59:48,657 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 975 transitions. Word has length 104 [2019-11-06 21:59:48,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:48,657 INFO L462 AbstractCegarLoop]: Abstraction has 811 states and 975 transitions. [2019-11-06 21:59:48,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:59:48,658 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 975 transitions. [2019-11-06 21:59:48,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-06 21:59:48,663 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:48,664 INFO L410 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] [2019-11-06 21:59:48,664 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:48,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:48,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1729220383, now seen corresponding path program 1 times [2019-11-06 21:59:48,665 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:48,665 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636739386] [2019-11-06 21:59:48,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,042 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:59:49,208 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636739386] [2019-11-06 21:59:49,209 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:49,209 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 21:59:49,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196684269] [2019-11-06 21:59:49,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 21:59:49,211 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:49,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 21:59:49,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:59:49,212 INFO L87 Difference]: Start difference. First operand 811 states and 975 transitions. Second operand 12 states. [2019-11-06 21:59:50,120 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:50,380 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:50,624 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:51,502 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:51,813 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:52,113 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:53,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:53,561 INFO L93 Difference]: Finished difference Result 1876 states and 2515 transitions. [2019-11-06 21:59:53,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 21:59:53,561 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2019-11-06 21:59:53,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:53,573 INFO L225 Difference]: With dead ends: 1876 [2019-11-06 21:59:53,574 INFO L226 Difference]: Without dead ends: 1093 [2019-11-06 21:59:53,577 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-11-06 21:59:53,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2019-11-06 21:59:53,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 827. [2019-11-06 21:59:53,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2019-11-06 21:59:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 991 transitions. [2019-11-06 21:59:53,764 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 991 transitions. Word has length 104 [2019-11-06 21:59:53,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:53,764 INFO L462 AbstractCegarLoop]: Abstraction has 827 states and 991 transitions. [2019-11-06 21:59:53,765 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 21:59:53,765 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 991 transitions. [2019-11-06 21:59:53,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-06 21:59:53,768 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:53,769 INFO L410 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] [2019-11-06 21:59:53,769 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:53,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:53,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1969760512, now seen corresponding path program 1 times [2019-11-06 21:59:53,770 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:53,770 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312689470] [2019-11-06 21:59:53,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,107 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:54,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:59:54,295 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312689470] [2019-11-06 21:59:54,296 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:54,296 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:59:54,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638834790] [2019-11-06 21:59:54,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:59:54,299 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:54,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:59:54,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:59:54,300 INFO L87 Difference]: Start difference. First operand 827 states and 991 transitions. Second operand 8 states. [2019-11-06 21:59:54,747 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:55,327 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:58,359 INFO L93 Difference]: Finished difference Result 2807 states and 3809 transitions. [2019-11-06 21:59:58,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-06 21:59:58,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2019-11-06 21:59:58,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:58,372 INFO L225 Difference]: With dead ends: 2807 [2019-11-06 21:59:58,372 INFO L226 Difference]: Without dead ends: 2008 [2019-11-06 21:59:58,376 INFO L630 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 [2019-11-06 21:59:58,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2019-11-06 21:59:58,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1651. [2019-11-06 21:59:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1651 states. [2019-11-06 21:59:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2005 transitions. [2019-11-06 21:59:58,749 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2005 transitions. Word has length 104 [2019-11-06 21:59:58,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:58,750 INFO L462 AbstractCegarLoop]: Abstraction has 1651 states and 2005 transitions. [2019-11-06 21:59:58,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:59:58,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2005 transitions. [2019-11-06 21:59:58,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-06 21:59:58,755 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:58,755 INFO L410 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, 1] [2019-11-06 21:59:58,756 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:58,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:58,756 INFO L82 PathProgramCache]: Analyzing trace with hash 672707866, now seen corresponding path program 1 times [2019-11-06 21:59:58,757 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:58,757 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212860826] [2019-11-06 21:59:58,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,043 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 21:59:59,325 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212860826] [2019-11-06 21:59:59,327 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085714748] [2019-11-06 21:59:59,327 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 [2019-11-06 21:59:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:59,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-06 21:59:59,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:59:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:59,804 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:59:59,804 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2019-11-06 21:59:59,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403120136] [2019-11-06 21:59:59,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:59:59,805 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:59,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:59:59,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-11-06 21:59:59,806 INFO L87 Difference]: Start difference. First operand 1651 states and 2005 transitions. Second operand 8 states.