java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:40:09,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:40:09,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:40:09,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:40:09,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:40:09,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:40:09,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:40:09,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:40:09,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:40:09,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:40:09,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:40:09,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:40:09,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:40:09,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:40:09,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:40:09,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:40:09,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:40:09,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:40:09,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:40:09,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:40:09,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:40:09,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:40:09,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:40:09,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:40:09,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:40:09,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:40:09,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:40:09,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:40:09,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:40:09,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:40:09,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:40:09,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:40:09,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:40:09,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:40:09,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:40:09,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:40:09,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:40:09,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:40:09,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:40:09,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:40:09,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:40:09,660 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 [2019-10-13 19:40:09,674 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:40:09,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:40:09,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:40:09,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:40:09,675 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:40:09,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:40:09,676 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:40:09,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:40:09,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:40:09,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:40:09,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:40:09,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:40:09,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:40:09,677 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:40:09,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:40:09,678 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:40:09,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:40:09,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:40:09,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:40:09,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:40:09,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:40:09,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:40:09,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:40:09,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:40:09,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:40:09,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:40:09,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:40:09,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:40:09,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:40:09,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:40:09,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:40:09,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:40:10,000 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:40:10,001 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:40:10,001 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product61.cil.c [2019-10-13 19:40:10,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08bf7fe43/3cdf6332476b49cf8c52c3937a87cd70/FLAG05bb38139 [2019-10-13 19:40:10,548 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:40:10,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product61.cil.c [2019-10-13 19:40:10,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08bf7fe43/3cdf6332476b49cf8c52c3937a87cd70/FLAG05bb38139 [2019-10-13 19:40:10,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08bf7fe43/3cdf6332476b49cf8c52c3937a87cd70 [2019-10-13 19:40:10,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:40:10,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:40:10,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:40:10,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:40:10,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:40:10,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:10" (1/1) ... [2019-10-13 19:40:10,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e9ca86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:10, skipping insertion in model container [2019-10-13 19:40:10,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:10" (1/1) ... [2019-10-13 19:40:10,937 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:40:11,014 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:40:11,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:40:11,559 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:40:11,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:40:11,713 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:40:11,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:11 WrapperNode [2019-10-13 19:40:11,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:40:11,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:40:11,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:40:11,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:40:11,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:11" (1/1) ... [2019-10-13 19:40:11,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:11" (1/1) ... [2019-10-13 19:40:11,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:11" (1/1) ... [2019-10-13 19:40:11,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:11" (1/1) ... [2019-10-13 19:40:11,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:11" (1/1) ... [2019-10-13 19:40:11,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:11" (1/1) ... [2019-10-13 19:40:11,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:11" (1/1) ... [2019-10-13 19:40:11,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:40:11,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:40:11,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:40:11,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:40:11,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:11" (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 [2019-10-13 19:40:11,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:40:11,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:40:11,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:40:11,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:40:11,862 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:40:11,862 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:40:11,863 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:40:11,863 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:40:11,863 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:40:11,863 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:40:11,863 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:40:11,863 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:40:11,864 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:40:11,864 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:40:11,864 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:40:11,864 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:40:11,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:40:11,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:40:11,865 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:40:11,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:40:11,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:40:11,865 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:40:11,865 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:40:11,866 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:40:11,866 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:40:11,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:40:11,866 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:40:11,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:40:11,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:40:11,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:40:11,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:40:11,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:40:11,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:40:11,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:40:11,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:40:11,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:40:11,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:40:11,868 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:40:11,868 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:40:11,868 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:40:11,868 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:40:11,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:40:11,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:40:11,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:40:11,869 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:40:11,869 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:40:11,869 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:40:11,870 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:40:11,870 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:40:11,870 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:40:11,870 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:40:11,870 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:40:11,870 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:40:11,870 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:40:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:40:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:40:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:40:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:40:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:40:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:40:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:40:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:40:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:40:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:40:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:40:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:40:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:40:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:40:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:40:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:40:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:40:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:40:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:40:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:40:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:40:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:40:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:40:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:40:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:40:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:40:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:40:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:40:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:40:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:40:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:40:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:40:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:40:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:40:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:40:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:40:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:40:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:40:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:40:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:40:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:40:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:40:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:40:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:40:12,923 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:40:12,924 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:40:12,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:12 BoogieIcfgContainer [2019-10-13 19:40:12,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:40:12,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:40:12,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:40:12,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:40:12,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:40:10" (1/3) ... [2019-10-13 19:40:12,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d44d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:12, skipping insertion in model container [2019-10-13 19:40:12,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:11" (2/3) ... [2019-10-13 19:40:12,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d44d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:12, skipping insertion in model container [2019-10-13 19:40:12,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:12" (3/3) ... [2019-10-13 19:40:12,937 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product61.cil.c [2019-10-13 19:40:12,948 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:40:12,957 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:40:12,969 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:40:13,010 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:40:13,010 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:40:13,010 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:40:13,010 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:40:13,011 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:40:13,011 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:40:13,012 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:40:13,012 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:40:13,043 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2019-10-13 19:40:13,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:40:13,053 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:13,054 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:13,056 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:13,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:13,061 INFO L82 PathProgramCache]: Analyzing trace with hash -389891839, now seen corresponding path program 1 times [2019-10-13 19:40:13,070 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:13,071 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198363272] [2019-10-13 19:40:13,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:13,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:13,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,756 WARN L191 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:13,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198363272] [2019-10-13 19:40:13,824 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:13,824 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:40:13,824 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185050579] [2019-10-13 19:40:13,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:40:13,830 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:13,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:40:13,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:40:13,848 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2019-10-13 19:40:15,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:15,231 INFO L93 Difference]: Finished difference Result 351 states and 455 transitions. [2019-10-13 19:40:15,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:40:15,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:40:15,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:15,263 INFO L225 Difference]: With dead ends: 351 [2019-10-13 19:40:15,263 INFO L226 Difference]: Without dead ends: 189 [2019-10-13 19:40:15,272 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:40:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2019-10-13 19:40:15,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 153. [2019-10-13 19:40:15,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-10-13 19:40:15,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2019-10-13 19:40:15,387 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 46 [2019-10-13 19:40:15,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:15,388 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2019-10-13 19:40:15,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:40:15,388 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2019-10-13 19:40:15,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:40:15,392 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:15,392 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:15,392 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:15,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:15,393 INFO L82 PathProgramCache]: Analyzing trace with hash 999791911, now seen corresponding path program 1 times [2019-10-13 19:40:15,393 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:15,393 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169971475] [2019-10-13 19:40:15,393 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:15,394 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:15,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:15,763 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:15,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169971475] [2019-10-13 19:40:15,799 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:15,799 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:40:15,799 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990057810] [2019-10-13 19:40:15,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:40:15,802 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:15,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:40:15,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:40:15,802 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2019-10-13 19:40:16,372 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:17,407 INFO L93 Difference]: Finished difference Result 284 states and 346 transitions. [2019-10-13 19:40:17,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:40:17,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:40:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:17,412 INFO L225 Difference]: With dead ends: 284 [2019-10-13 19:40:17,412 INFO L226 Difference]: Without dead ends: 173 [2019-10-13 19:40:17,415 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:40:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-10-13 19:40:17,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 144. [2019-10-13 19:40:17,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-13 19:40:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2019-10-13 19:40:17,456 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 47 [2019-10-13 19:40:17,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:17,457 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2019-10-13 19:40:17,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:40:17,457 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2019-10-13 19:40:17,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:40:17,459 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:17,459 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] [2019-10-13 19:40:17,460 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:17,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:17,460 INFO L82 PathProgramCache]: Analyzing trace with hash -314490359, now seen corresponding path program 1 times [2019-10-13 19:40:17,460 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:17,461 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126493072] [2019-10-13 19:40:17,461 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:17,461 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:17,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:17,794 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:17,913 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126493072] [2019-10-13 19:40:17,913 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:17,913 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:40:17,914 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034201958] [2019-10-13 19:40:17,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:40:17,914 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:17,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:40:17,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:40:17,915 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2019-10-13 19:40:18,398 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:18,729 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:19,013 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:19,301 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:20,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:20,900 INFO L93 Difference]: Finished difference Result 293 states and 360 transitions. [2019-10-13 19:40:20,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:40:20,900 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-13 19:40:20,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:20,904 INFO L225 Difference]: With dead ends: 293 [2019-10-13 19:40:20,904 INFO L226 Difference]: Without dead ends: 173 [2019-10-13 19:40:20,905 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:40:20,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-10-13 19:40:20,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 144. [2019-10-13 19:40:20,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-13 19:40:20,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2019-10-13 19:40:20,943 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 51 [2019-10-13 19:40:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:20,944 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2019-10-13 19:40:20,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:40:20,947 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2019-10-13 19:40:20,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-13 19:40:20,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:20,950 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] [2019-10-13 19:40:20,951 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:20,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:20,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1957039538, now seen corresponding path program 1 times [2019-10-13 19:40:20,951 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:20,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524209062] [2019-10-13 19:40:20,952 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:20,952 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:20,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:21,242 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:21,328 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524209062] [2019-10-13 19:40:21,328 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:21,328 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:40:21,329 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865626284] [2019-10-13 19:40:21,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:40:21,329 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:21,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:40:21,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:40:21,330 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2019-10-13 19:40:21,731 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:23,048 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:23,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:23,867 INFO L93 Difference]: Finished difference Result 399 states and 490 transitions. [2019-10-13 19:40:23,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:40:23,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2019-10-13 19:40:23,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:23,872 INFO L225 Difference]: With dead ends: 399 [2019-10-13 19:40:23,872 INFO L226 Difference]: Without dead ends: 279 [2019-10-13 19:40:23,873 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:40:23,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2019-10-13 19:40:23,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 238. [2019-10-13 19:40:23,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-10-13 19:40:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 268 transitions. [2019-10-13 19:40:23,922 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 268 transitions. Word has length 69 [2019-10-13 19:40:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:23,922 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 268 transitions. [2019-10-13 19:40:23,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:40:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 268 transitions. [2019-10-13 19:40:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-13 19:40:23,925 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:23,925 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] [2019-10-13 19:40:23,926 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:23,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:23,926 INFO L82 PathProgramCache]: Analyzing trace with hash 868877799, now seen corresponding path program 1 times [2019-10-13 19:40:23,926 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:23,927 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133990696] [2019-10-13 19:40:23,927 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:23,927 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:23,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,247 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:24,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133990696] [2019-10-13 19:40:24,411 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:24,411 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:40:24,411 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009926175] [2019-10-13 19:40:24,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:40:24,413 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:24,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:40:24,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:40:24,414 INFO L87 Difference]: Start difference. First operand 238 states and 268 transitions. Second operand 12 states. [2019-10-13 19:40:25,088 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:25,433 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:25,703 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:25,958 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:26,591 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:27,671 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:28,014 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:28,347 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:28,643 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:28,993 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:29,296 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:30,978 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:31,404 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:32,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:32,518 INFO L93 Difference]: Finished difference Result 830 states and 1046 transitions. [2019-10-13 19:40:32,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:40:32,518 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2019-10-13 19:40:32,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:32,525 INFO L225 Difference]: With dead ends: 830 [2019-10-13 19:40:32,525 INFO L226 Difference]: Without dead ends: 616 [2019-10-13 19:40:32,526 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:40:32,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-13 19:40:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 558. [2019-10-13 19:40:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-10-13 19:40:32,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 648 transitions. [2019-10-13 19:40:32,639 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 648 transitions. Word has length 83 [2019-10-13 19:40:32,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:32,640 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 648 transitions. [2019-10-13 19:40:32,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:40:32,640 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 648 transitions. [2019-10-13 19:40:32,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 19:40:32,644 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:32,645 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:32,645 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:32,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:32,645 INFO L82 PathProgramCache]: Analyzing trace with hash -128505367, now seen corresponding path program 1 times [2019-10-13 19:40:32,646 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:32,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210913815] [2019-10-13 19:40:32,646 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:32,646 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:32,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,002 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-13 19:40:33,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210913815] [2019-10-13 19:40:33,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856102181] [2019-10-13 19:40:33,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:33,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 19:40:33,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:33,650 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:40:33,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2019-10-13 19:40:33,650 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103466856] [2019-10-13 19:40:33,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:40:33,651 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:33,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:40:33,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:40:33,652 INFO L87 Difference]: Start difference. First operand 558 states and 648 transitions. Second operand 8 states. [2019-10-13 19:40:35,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:35,405 INFO L93 Difference]: Finished difference Result 1396 states and 1790 transitions. [2019-10-13 19:40:35,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:40:35,406 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2019-10-13 19:40:35,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:35,415 INFO L225 Difference]: With dead ends: 1396 [2019-10-13 19:40:35,415 INFO L226 Difference]: Without dead ends: 986 [2019-10-13 19:40:35,417 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:40:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2019-10-13 19:40:35,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 912. [2019-10-13 19:40:35,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2019-10-13 19:40:35,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1107 transitions. [2019-10-13 19:40:35,599 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1107 transitions. Word has length 146 [2019-10-13 19:40:35,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:35,600 INFO L462 AbstractCegarLoop]: Abstraction has 912 states and 1107 transitions. [2019-10-13 19:40:35,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:40:35,600 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1107 transitions. [2019-10-13 19:40:35,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 19:40:35,603 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:35,603 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:40:35,808 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:35,808 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:35,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:35,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1510920712, now seen corresponding path program 1 times [2019-10-13 19:40:35,810 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:35,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008920524] [2019-10-13 19:40:35,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:35,811 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:35,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,117 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:40:36,350 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008920524] [2019-10-13 19:40:36,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774027035] [2019-10-13 19:40:36,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:36,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 19:40:36,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:40:36,613 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:40:36,614 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2019-10-13 19:40:36,614 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465689104] [2019-10-13 19:40:36,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:40:36,617 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:36,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:40:36,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:40:36,618 INFO L87 Difference]: Start difference. First operand 912 states and 1107 transitions. Second operand 6 states. [2019-10-13 19:40:36,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:36,870 INFO L93 Difference]: Finished difference Result 1828 states and 2310 transitions. [2019-10-13 19:40:36,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:40:36,871 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2019-10-13 19:40:36,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:36,877 INFO L225 Difference]: With dead ends: 1828 [2019-10-13 19:40:36,877 INFO L226 Difference]: Without dead ends: 940 [2019-10-13 19:40:36,885 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:40:36,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2019-10-13 19:40:37,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 932. [2019-10-13 19:40:37,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2019-10-13 19:40:37,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1131 transitions. [2019-10-13 19:40:37,089 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1131 transitions. Word has length 146 [2019-10-13 19:40:37,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:37,090 INFO L462 AbstractCegarLoop]: Abstraction has 932 states and 1131 transitions. [2019-10-13 19:40:37,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:40:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1131 transitions. [2019-10-13 19:40:37,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 19:40:37,100 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:37,101 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:40:37,314 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:37,315 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:37,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:37,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1165071670, now seen corresponding path program 1 times [2019-10-13 19:40:37,316 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:37,316 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671538839] [2019-10-13 19:40:37,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:37,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:37,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,607 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:40:37,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671538839] [2019-10-13 19:40:37,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921163774] [2019-10-13 19:40:37,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:37,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 19:40:37,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:40:38,043 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:40:38,044 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-10-13 19:40:38,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723817618] [2019-10-13 19:40:38,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:40:38,045 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:38,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:40:38,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:40:38,045 INFO L87 Difference]: Start difference. First operand 932 states and 1131 transitions. Second operand 5 states. [2019-10-13 19:40:38,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:38,238 INFO L93 Difference]: Finished difference Result 1658 states and 2062 transitions. [2019-10-13 19:40:38,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:40:38,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2019-10-13 19:40:38,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:38,244 INFO L225 Difference]: With dead ends: 1658 [2019-10-13 19:40:38,244 INFO L226 Difference]: Without dead ends: 750 [2019-10-13 19:40:38,248 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:40:38,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2019-10-13 19:40:38,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2019-10-13 19:40:38,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-10-13 19:40:38,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 901 transitions. [2019-10-13 19:40:38,394 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 901 transitions. Word has length 146 [2019-10-13 19:40:38,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:38,395 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 901 transitions. [2019-10-13 19:40:38,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:40:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 901 transitions. [2019-10-13 19:40:38,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 19:40:38,398 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:38,398 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:40:38,602 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:38,603 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:38,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:38,604 INFO L82 PathProgramCache]: Analyzing trace with hash 667358703, now seen corresponding path program 1 times [2019-10-13 19:40:38,604 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:38,604 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426824118] [2019-10-13 19:40:38,605 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:38,605 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:38,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,045 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 19:40:39,327 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426824118] [2019-10-13 19:40:39,327 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130114978] [2019-10-13 19:40:39,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:39,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 19:40:39,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:39,766 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:40:39,766 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-10-13 19:40:39,766 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089729952] [2019-10-13 19:40:39,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-13 19:40:39,767 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:39,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-13 19:40:39,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:40:39,768 INFO L87 Difference]: Start difference. First operand 750 states and 901 transitions. Second operand 22 states. [2019-10-13 19:40:40,654 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:41,692 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:42,007 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:42,517 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:44,465 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:44,913 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:45,205 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:45,620 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:45,988 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:46,291 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:46,658 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:46,970 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:47,288 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:47,625 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191