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_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:35:28,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:35:28,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:35:28,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:35:28,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:35:28,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:35:28,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:35:28,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:35:28,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:35:28,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:35:28,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:35:28,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:35:28,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:35:28,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:35:28,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:35:28,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:35:28,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:35:28,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:35:28,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:35:28,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:35:28,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:35:28,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:35:28,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:35:28,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:35:28,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:35:28,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:35:28,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:35:28,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:35:28,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:35:28,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:35:28,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:35:28,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:35:28,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:35:28,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:35:28,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:35:28,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:35:28,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:35:28,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:35:28,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:35:28,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:35:28,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:35:28,684 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 23:35:28,703 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:35:28,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:35:28,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:35:28,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:35:28,706 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:35:28,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:35:28,706 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:35:28,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:35:28,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:35:28,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:35:28,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:35:28,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:35:28,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:35:28,709 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:35:28,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:35:28,709 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:35:28,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:35:28,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:35:28,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:35:28,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:35:28,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:35:28,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:35:28,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:35:28,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:35:28,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:35:28,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:35:28,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:35:28,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:35:28,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:35:29,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:35:29,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:35:29,039 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:35:29,040 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:35:29,040 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:35:29,041 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2019-10-14 23:35:29,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da447c7e4/d59909f93d114e6188451b6f5887e534/FLAG100333305 [2019-10-14 23:35:29,611 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:35:29,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2019-10-14 23:35:29,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da447c7e4/d59909f93d114e6188451b6f5887e534/FLAG100333305 [2019-10-14 23:35:29,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da447c7e4/d59909f93d114e6188451b6f5887e534 [2019-10-14 23:35:29,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:35:29,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:35:29,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:35:29,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:35:29,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:35:29,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:29" (1/1) ... [2019-10-14 23:35:29,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f4b78c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:29, skipping insertion in model container [2019-10-14 23:35:29,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:29" (1/1) ... [2019-10-14 23:35:29,923 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:35:29,981 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:35:30,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:35:30,411 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:35:30,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:35:30,554 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:35:30,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:30 WrapperNode [2019-10-14 23:35:30,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:35:30,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:35:30,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:35:30,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:35:30,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:30" (1/1) ... [2019-10-14 23:35:30,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:30" (1/1) ... [2019-10-14 23:35:30,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:30" (1/1) ... [2019-10-14 23:35:30,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:30" (1/1) ... [2019-10-14 23:35:30,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:30" (1/1) ... [2019-10-14 23:35:30,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:30" (1/1) ... [2019-10-14 23:35:30,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:30" (1/1) ... [2019-10-14 23:35:30,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:35:30,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:35:30,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:35:30,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:35:30,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:30" (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 23:35:30,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:35:30,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:35:30,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:35:30,705 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:35:30,706 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:35:30,706 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:35:30,706 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:35:30,706 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:35:30,706 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:35:30,706 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:35:30,707 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:35:30,707 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:35:30,707 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:35:30,707 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:35:30,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:35:30,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:35:30,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:35:30,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:35:30,708 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:35:30,708 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:35:30,708 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:35:30,709 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:35:30,709 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:35:30,709 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:35:30,709 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:35:30,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:35:30,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:35:30,709 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:35:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:35:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:35:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:35:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:35:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:35:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:35:30,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:35:30,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:35:30,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:35:30,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:35:30,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:35:30,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:35:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:35:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:35:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:35:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:35:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:35:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:35:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:35:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:35:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:35:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:35:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:35:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:35:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:35:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:35:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:35:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:35:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:35:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:35:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:35:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:35:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:35:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:35:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:35:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:35:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:35:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:35:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:35:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:35:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:35:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:35:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:35:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:35:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:35:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:35:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:35:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:35:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:35:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:35:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:35:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:35:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:35:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:35:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:35:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:35:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:35:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:35:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:35:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:35:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:35:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:35:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:35:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:35:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:35:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:35:31,777 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:35:31,778 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:35:31,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:31 BoogieIcfgContainer [2019-10-14 23:35:31,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:35:31,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:35:31,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:35:31,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:35:31,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:35:29" (1/3) ... [2019-10-14 23:35:31,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb2c3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:31, skipping insertion in model container [2019-10-14 23:35:31,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:30" (2/3) ... [2019-10-14 23:35:31,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb2c3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:31, skipping insertion in model container [2019-10-14 23:35:31,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:31" (3/3) ... [2019-10-14 23:35:31,788 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product39.cil.c [2019-10-14 23:35:31,797 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:35:31,806 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:35:31,817 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:35:31,844 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:35:31,844 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:35:31,844 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:35:31,844 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:35:31,845 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:35:31,845 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:35:31,845 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:35:31,845 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:35:31,868 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2019-10-14 23:35:31,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:35:31,878 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:31,879 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 23:35:31,881 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:31,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:31,888 INFO L82 PathProgramCache]: Analyzing trace with hash 652232891, now seen corresponding path program 1 times [2019-10-14 23:35:31,897 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:31,898 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702963923] [2019-10-14 23:35:31,898 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:31,898 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:31,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:32,602 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:32,702 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 23:35:32,703 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702963923] [2019-10-14 23:35:32,705 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:32,705 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:35:32,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035674503] [2019-10-14 23:35:32,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:35:32,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:32,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:35:32,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:35:32,742 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 4 states. [2019-10-14 23:35:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:33,994 INFO L93 Difference]: Finished difference Result 301 states and 396 transitions. [2019-10-14 23:35:33,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:35:33,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-14 23:35:33,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:34,012 INFO L225 Difference]: With dead ends: 301 [2019-10-14 23:35:34,013 INFO L226 Difference]: Without dead ends: 168 [2019-10-14 23:35:34,018 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 23:35:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-14 23:35:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2019-10-14 23:35:34,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-10-14 23:35:34,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 159 transitions. [2019-10-14 23:35:34,155 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 159 transitions. Word has length 51 [2019-10-14 23:35:34,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:34,156 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 159 transitions. [2019-10-14 23:35:34,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:35:34,156 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 159 transitions. [2019-10-14 23:35:34,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:35:34,163 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:34,163 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 23:35:34,163 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:34,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:34,164 INFO L82 PathProgramCache]: Analyzing trace with hash -564528421, now seen corresponding path program 1 times [2019-10-14 23:35:34,164 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:34,164 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072773672] [2019-10-14 23:35:34,164 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:34,165 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:34,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,516 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,577 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 23:35:34,577 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072773672] [2019-10-14 23:35:34,578 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:34,578 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:35:34,578 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958850424] [2019-10-14 23:35:34,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:35:34,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:34,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:35:34,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:35:34,581 INFO L87 Difference]: Start difference. First operand 134 states and 159 transitions. Second operand 5 states. [2019-10-14 23:35:35,093 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:35:36,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:36,030 INFO L93 Difference]: Finished difference Result 240 states and 299 transitions. [2019-10-14 23:35:36,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:35:36,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-14 23:35:36,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:36,034 INFO L225 Difference]: With dead ends: 240 [2019-10-14 23:35:36,034 INFO L226 Difference]: Without dead ends: 158 [2019-10-14 23:35:36,036 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 23:35:36,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2019-10-14 23:35:36,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 125. [2019-10-14 23:35:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-10-14 23:35:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2019-10-14 23:35:36,072 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 52 [2019-10-14 23:35:36,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:36,072 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2019-10-14 23:35:36,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:35:36,072 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2019-10-14 23:35:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 23:35:36,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:36,075 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 23:35:36,075 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:36,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:36,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1211879035, now seen corresponding path program 1 times [2019-10-14 23:35:36,076 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:36,076 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084828144] [2019-10-14 23:35:36,076 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:36,076 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:36,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:36,458 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:36,566 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 23:35:36,566 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084828144] [2019-10-14 23:35:36,566 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:36,567 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:35:36,567 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293684398] [2019-10-14 23:35:36,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:35:36,567 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:36,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:35:36,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:35:36,568 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand 9 states. [2019-10-14 23:35:37,043 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:37,413 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:35:37,747 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:38,016 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:38,926 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:35:40,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:40,870 INFO L93 Difference]: Finished difference Result 423 states and 537 transitions. [2019-10-14 23:35:40,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:35:40,871 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2019-10-14 23:35:40,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:40,878 INFO L225 Difference]: With dead ends: 423 [2019-10-14 23:35:40,879 INFO L226 Difference]: Without dead ends: 326 [2019-10-14 23:35:40,880 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:35:40,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2019-10-14 23:35:40,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 265. [2019-10-14 23:35:40,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2019-10-14 23:35:40,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2019-10-14 23:35:40,954 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 56 [2019-10-14 23:35:40,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:40,955 INFO L462 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2019-10-14 23:35:40,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:35:40,955 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2019-10-14 23:35:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-14 23:35:40,958 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:40,958 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 23:35:40,958 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:40,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:40,959 INFO L82 PathProgramCache]: Analyzing trace with hash -773448372, now seen corresponding path program 1 times [2019-10-14 23:35:40,959 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:40,959 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690527025] [2019-10-14 23:35:40,959 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:40,960 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:40,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,291 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,393 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 23:35:41,394 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690527025] [2019-10-14 23:35:41,394 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:41,394 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:35:41,394 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144077120] [2019-10-14 23:35:41,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:35:41,395 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:41,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:35:41,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:35:41,397 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 9 states. [2019-10-14 23:35:41,848 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:42,914 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:43,374 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:43,696 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:44,024 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:45,368 INFO L93 Difference]: Finished difference Result 845 states and 1123 transitions. [2019-10-14 23:35:45,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:35:45,369 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-10-14 23:35:45,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:45,375 INFO L225 Difference]: With dead ends: 845 [2019-10-14 23:35:45,375 INFO L226 Difference]: Without dead ends: 608 [2019-10-14 23:35:45,377 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 23:35:45,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-14 23:35:45,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 478. [2019-10-14 23:35:45,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2019-10-14 23:35:45,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 588 transitions. [2019-10-14 23:35:45,500 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 588 transitions. Word has length 62 [2019-10-14 23:35:45,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:45,501 INFO L462 AbstractCegarLoop]: Abstraction has 478 states and 588 transitions. [2019-10-14 23:35:45,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:35:45,501 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 588 transitions. [2019-10-14 23:35:45,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-14 23:35:45,504 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:45,504 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 23:35:45,505 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:45,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:45,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1032831448, now seen corresponding path program 1 times [2019-10-14 23:35:45,505 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:45,506 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934028150] [2019-10-14 23:35:45,506 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:45,506 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:45,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,825 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,933 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 23:35:45,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934028150] [2019-10-14 23:35:45,934 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:45,934 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:35:45,934 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92588274] [2019-10-14 23:35:45,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:35:45,935 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:45,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:35:45,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:35:45,936 INFO L87 Difference]: Start difference. First operand 478 states and 588 transitions. Second operand 10 states. [2019-10-14 23:35:46,761 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:47,937 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:48,292 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:48,619 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:49,303 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:50,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:50,670 INFO L93 Difference]: Finished difference Result 1339 states and 1842 transitions. [2019-10-14 23:35:50,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-14 23:35:50,670 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-10-14 23:35:50,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:50,678 INFO L225 Difference]: With dead ends: 1339 [2019-10-14 23:35:50,678 INFO L226 Difference]: Without dead ends: 889 [2019-10-14 23:35:50,680 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-10-14 23:35:50,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2019-10-14 23:35:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 693. [2019-10-14 23:35:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2019-10-14 23:35:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 847 transitions. [2019-10-14 23:35:50,842 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 847 transitions. Word has length 66 [2019-10-14 23:35:50,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:50,843 INFO L462 AbstractCegarLoop]: Abstraction has 693 states and 847 transitions. [2019-10-14 23:35:50,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:35:50,843 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 847 transitions. [2019-10-14 23:35:50,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:35:50,845 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:50,846 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:35:50,846 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:50,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:50,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1961211398, now seen corresponding path program 1 times [2019-10-14 23:35:50,847 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:50,847 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116145794] [2019-10-14 23:35:50,847 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:50,847 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:50,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,110 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,250 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 23:35:51,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116145794] [2019-10-14 23:35:51,251 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:51,251 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:35:51,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48836974] [2019-10-14 23:35:51,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:35:51,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:51,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:35:51,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:35:51,252 INFO L87 Difference]: Start difference. First operand 693 states and 847 transitions. Second operand 10 states. [2019-10-14 23:35:51,833 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:53,069 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:53,349 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:35:53,680 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:53,971 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:56,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:56,014 INFO L93 Difference]: Finished difference Result 2350 states and 3369 transitions. [2019-10-14 23:35:56,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:35:56,015 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-14 23:35:56,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:56,031 INFO L225 Difference]: With dead ends: 2350 [2019-10-14 23:35:56,031 INFO L226 Difference]: Without dead ends: 1685 [2019-10-14 23:35:56,035 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2019-10-14 23:35:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2019-10-14 23:35:56,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1247. [2019-10-14 23:35:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2019-10-14 23:35:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1522 transitions. [2019-10-14 23:35:56,336 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1522 transitions. Word has length 88 [2019-10-14 23:35:56,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:56,336 INFO L462 AbstractCegarLoop]: Abstraction has 1247 states and 1522 transitions. [2019-10-14 23:35:56,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:35:56,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1522 transitions. [2019-10-14 23:35:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:35:56,340 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:56,342 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:35:56,342 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:56,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:56,342 INFO L82 PathProgramCache]: Analyzing trace with hash 608275001, now seen corresponding path program 1 times [2019-10-14 23:35:56,342 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:56,343 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686827320] [2019-10-14 23:35:56,343 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:56,343 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:56,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,607 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:56,767 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 23:35:56,768 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686827320] [2019-10-14 23:35:56,769 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:56,769 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:35:56,769 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528621291] [2019-10-14 23:35:56,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:35:56,770 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:56,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:35:56,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:35:56,771 INFO L87 Difference]: Start difference. First operand 1247 states and 1522 transitions. Second operand 10 states. [2019-10-14 23:35:58,187 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:58,498 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:35:58,788 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:35:59,075 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:00,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:00,329 INFO L93 Difference]: Finished difference Result 2904 states and 3892 transitions. [2019-10-14 23:36:00,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:00,329 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-14 23:36:00,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:00,341 INFO L225 Difference]: With dead ends: 2904 [2019-10-14 23:36:00,341 INFO L226 Difference]: Without dead ends: 1685 [2019-10-14 23:36:00,345 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 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 23:36:00,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2019-10-14 23:36:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1287. [2019-10-14 23:36:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1287 states. [2019-10-14 23:36:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1562 transitions. [2019-10-14 23:36:00,593 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1562 transitions. Word has length 88 [2019-10-14 23:36:00,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:00,596 INFO L462 AbstractCegarLoop]: Abstraction has 1287 states and 1562 transitions. [2019-10-14 23:36:00,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:00,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1562 transitions. [2019-10-14 23:36:00,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:36:00,600 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:00,600 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:00,600 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:00,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:00,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1309874875, now seen corresponding path program 1 times [2019-10-14 23:36:00,601 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:00,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012563246] [2019-10-14 23:36:00,601 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:00,602 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:00,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,886 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:01,026 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 23:36:01,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012563246] [2019-10-14 23:36:01,032 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:01,032 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:36:01,032 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580422471] [2019-10-14 23:36:01,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:36:01,033 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:01,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:36:01,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:36:01,035 INFO L87 Difference]: Start difference. First operand 1287 states and 1562 transitions. Second operand 12 states. [2019-10-14 23:36:01,698 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:01,956 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:02,203 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:03,037 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:03,317 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:03,576 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:05,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:05,033 INFO L93 Difference]: Finished difference Result 2600 states and 3450 transitions. [2019-10-14 23:36:05,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:36:05,034 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-10-14 23:36:05,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:05,043 INFO L225 Difference]: With dead ends: 2600 [2019-10-14 23:36:05,043 INFO L226 Difference]: Without dead ends: 1341 [2019-10-14 23:36:05,047 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:36:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2019-10-14 23:36:05,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1063. [2019-10-14 23:36:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2019-10-14 23:36:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1258 transitions. [2019-10-14 23:36:05,279 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1258 transitions. Word has length 88 [2019-10-14 23:36:05,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:05,280 INFO L462 AbstractCegarLoop]: Abstraction has 1063 states and 1258 transitions. [2019-10-14 23:36:05,280 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:36:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1258 transitions. [2019-10-14 23:36:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-14 23:36:05,284 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:05,284 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:05,285 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:05,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:05,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1814435734, now seen corresponding path program 1 times [2019-10-14 23:36:05,286 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:05,286 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593833922] [2019-10-14 23:36:05,286 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:05,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:05,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,570 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:05,662 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 23:36:05,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593833922] [2019-10-14 23:36:05,663 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:05,663 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:05,663 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713512351] [2019-10-14 23:36:05,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:05,665 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:05,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:05,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:05,665 INFO L87 Difference]: Start difference. First operand 1063 states and 1258 transitions. Second operand 8 states. [2019-10-14 23:36:06,074 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:08,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:08,702 INFO L93 Difference]: Finished difference Result 2130 states and 2835 transitions. [2019-10-14 23:36:08,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-14 23:36:08,702 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2019-10-14 23:36:08,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:08,715 INFO L225 Difference]: With dead ends: 2130 [2019-10-14 23:36:08,715 INFO L226 Difference]: Without dead ends: 2127 [2019-10-14 23:36:08,716 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2019-10-14 23:36:08,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2019-10-14 23:36:09,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1652. [2019-10-14 23:36:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2019-10-14 23:36:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1981 transitions. [2019-10-14 23:36:09,051 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1981 transitions. Word has length 92 [2019-10-14 23:36:09,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:09,052 INFO L462 AbstractCegarLoop]: Abstraction has 1652 states and 1981 transitions. [2019-10-14 23:36:09,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1981 transitions. [2019-10-14 23:36:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-14 23:36:09,059 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:09,060 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:09,060 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:09,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:09,061 INFO L82 PathProgramCache]: Analyzing trace with hash -374585462, now seen corresponding path program 1 times [2019-10-14 23:36:09,061 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:09,061 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775681676] [2019-10-14 23:36:09,061 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:09,061 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:09,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat