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_spec3_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:37:47,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:37:47,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:37:48,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:37:48,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:37:48,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:37:48,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:37:48,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:37:48,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:37:48,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:37:48,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:37:48,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:37:48,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:37:48,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:37:48,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:37:48,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:37:48,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:37:48,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:37:48,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:37:48,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:37:48,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:37:48,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:37:48,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:37:48,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:37:48,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:37:48,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:37:48,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:37:48,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:37:48,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:37:48,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:37:48,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:37:48,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:37:48,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:37:48,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:37:48,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:37:48,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:37:48,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:37:48,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:37:48,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:37:48,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:37:48,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:37:48,049 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 19:37:48,068 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:37:48,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:37:48,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:37:48,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:37:48,071 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:37:48,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:37:48,072 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:37:48,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:37:48,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:37:48,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:37:48,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:37:48,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:37:48,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:37:48,074 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:37:48,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:37:48,074 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:37:48,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:37:48,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:37:48,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:37:48,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:37:48,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:37:48,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:37:48,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:37:48,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:37:48,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:37:48,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:37:48,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:37:48,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:37:48,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:37:48,356 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:37:48,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:37:48,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:37:48,376 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:37:48,376 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:37:48,377 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2019-10-13 19:37:48,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e46587349/5f25c626b2f84db18de13055e3ae3d54/FLAG93e8c7b2c [2019-10-13 19:37:48,958 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:37:48,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2019-10-13 19:37:48,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e46587349/5f25c626b2f84db18de13055e3ae3d54/FLAG93e8c7b2c [2019-10-13 19:37:49,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e46587349/5f25c626b2f84db18de13055e3ae3d54 [2019-10-13 19:37:49,252 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:37:49,254 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:37:49,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:49,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:37:49,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:37:49,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:49" (1/1) ... [2019-10-13 19:37:49,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337b8df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:49, skipping insertion in model container [2019-10-13 19:37:49,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:49" (1/1) ... [2019-10-13 19:37:49,275 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:37:49,329 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:37:49,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:49,839 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:37:49,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:49,955 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:37:49,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:49 WrapperNode [2019-10-13 19:37:49,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:49,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:37:49,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:37:49,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:37:49,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:49" (1/1) ... [2019-10-13 19:37:49,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:49" (1/1) ... [2019-10-13 19:37:50,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:49" (1/1) ... [2019-10-13 19:37:50,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:49" (1/1) ... [2019-10-13 19:37:50,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:49" (1/1) ... [2019-10-13 19:37:50,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:49" (1/1) ... [2019-10-13 19:37:50,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:49" (1/1) ... [2019-10-13 19:37:50,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:37:50,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:37:50,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:37:50,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:37:50,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:49" (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 19:37:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:37:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:37:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:37:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:37:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:37:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:37:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:37:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:37:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:37:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-13 19:37:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:37:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:37:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:37:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:37:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:37:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:37:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:37:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:37:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:37:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:37:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:37:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:37:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:37:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:37:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:37:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:37:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:37:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:37:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:37:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:37:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:37:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:37:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:37:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:37:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:37:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:37:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:37:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:37:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:37:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:37:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:37:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:37:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:37:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:37:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:37:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:37:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:37:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:37:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:37:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:37:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:37:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:37:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:37:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:37:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-13 19:37:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:37:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:37:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:37:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:37:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:37:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:37:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:37:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:37:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:37:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:37:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:37:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:37:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:37:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:37:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:37:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:37:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:37:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:37:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:37:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:37:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:37:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:37:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:37:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:37:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:37:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:37:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:37:51,156 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:37:51,157 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:37:51,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:51 BoogieIcfgContainer [2019-10-13 19:37:51,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:37:51,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:37:51,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:37:51,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:37:51,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:37:49" (1/3) ... [2019-10-13 19:37:51,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba6fc4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:51, skipping insertion in model container [2019-10-13 19:37:51,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:49" (2/3) ... [2019-10-13 19:37:51,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba6fc4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:51, skipping insertion in model container [2019-10-13 19:37:51,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:51" (3/3) ... [2019-10-13 19:37:51,167 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2019-10-13 19:37:51,177 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:37:51,185 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:37:51,197 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:37:51,228 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:37:51,229 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:37:51,229 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:37:51,229 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:37:51,229 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:37:51,229 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:37:51,230 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:37:51,230 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:37:51,260 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2019-10-13 19:37:51,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:37:51,272 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:51,273 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] [2019-10-13 19:37:51,275 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:51,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:51,281 INFO L82 PathProgramCache]: Analyzing trace with hash 177325019, now seen corresponding path program 1 times [2019-10-13 19:37:51,290 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:51,290 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533254701] [2019-10-13 19:37:51,290 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:51,291 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:51,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,059 WARN L191 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,181 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 19:37:52,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533254701] [2019-10-13 19:37:52,183 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:52,184 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:37:52,187 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58478377] [2019-10-13 19:37:52,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:37:52,195 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:52,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:37:52,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:37:52,222 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2019-10-13 19:37:53,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:53,433 INFO L93 Difference]: Finished difference Result 287 states and 375 transitions. [2019-10-13 19:37:53,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:37:53,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-13 19:37:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:53,449 INFO L225 Difference]: With dead ends: 287 [2019-10-13 19:37:53,450 INFO L226 Difference]: Without dead ends: 155 [2019-10-13 19:37:53,454 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 19:37:53,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-10-13 19:37:53,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2019-10-13 19:37:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-10-13 19:37:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2019-10-13 19:37:53,540 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 52 [2019-10-13 19:37:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:53,541 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2019-10-13 19:37:53,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:37:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2019-10-13 19:37:53,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 19:37:53,544 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:53,545 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] [2019-10-13 19:37:53,545 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:53,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:53,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1842882407, now seen corresponding path program 1 times [2019-10-13 19:37:53,546 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:53,546 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179799943] [2019-10-13 19:37:53,546 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:53,546 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:53,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,863 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,958 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 19:37:53,958 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179799943] [2019-10-13 19:37:53,959 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:53,959 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:37:53,960 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241262171] [2019-10-13 19:37:53,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:37:53,964 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:53,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:37:53,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:37:53,966 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 4 states. [2019-10-13 19:37:54,476 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:55,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:55,223 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2019-10-13 19:37:55,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:37:55,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-13 19:37:55,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:55,227 INFO L225 Difference]: With dead ends: 220 [2019-10-13 19:37:55,228 INFO L226 Difference]: Without dead ends: 139 [2019-10-13 19:37:55,229 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 19:37:55,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-10-13 19:37:55,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2019-10-13 19:37:55,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-10-13 19:37:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2019-10-13 19:37:55,267 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 53 [2019-10-13 19:37:55,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:55,267 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2019-10-13 19:37:55,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:37:55,267 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2019-10-13 19:37:55,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:37:55,269 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:55,270 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] [2019-10-13 19:37:55,270 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:55,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:55,270 INFO L82 PathProgramCache]: Analyzing trace with hash 774651483, now seen corresponding path program 1 times [2019-10-13 19:37:55,271 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:55,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355775877] [2019-10-13 19:37:55,271 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:55,271 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:55,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,597 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,685 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 19:37:55,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355775877] [2019-10-13 19:37:55,685 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:55,685 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:55,686 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406374460] [2019-10-13 19:37:55,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:55,686 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:55,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:55,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:55,687 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 8 states. [2019-10-13 19:37:56,237 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:56,576 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:56,849 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:57,148 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:58,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:58,436 INFO L93 Difference]: Finished difference Result 229 states and 280 transitions. [2019-10-13 19:37:58,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:37:58,437 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-13 19:37:58,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:58,440 INFO L225 Difference]: With dead ends: 229 [2019-10-13 19:37:58,440 INFO L226 Difference]: Without dead ends: 139 [2019-10-13 19:37:58,441 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 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 19:37:58,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-10-13 19:37:58,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2019-10-13 19:37:58,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-10-13 19:37:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2019-10-13 19:37:58,477 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 57 [2019-10-13 19:37:58,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:58,477 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2019-10-13 19:37:58,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:58,477 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2019-10-13 19:37:58,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-13 19:37:58,479 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:58,480 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] [2019-10-13 19:37:58,480 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:58,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:58,480 INFO L82 PathProgramCache]: Analyzing trace with hash -771193848, now seen corresponding path program 1 times [2019-10-13 19:37:58,481 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:58,481 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790124863] [2019-10-13 19:37:58,481 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:58,481 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:58,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:58,765 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:58,844 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 19:37:58,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790124863] [2019-10-13 19:37:58,845 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:58,845 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:37:58,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434164567] [2019-10-13 19:37:58,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:37:58,846 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:58,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:37:58,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:37:58,846 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 6 states. [2019-10-13 19:37:59,244 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:00,415 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:01,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:01,121 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2019-10-13 19:38:01,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:38:01,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2019-10-13 19:38:01,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:01,126 INFO L225 Difference]: With dead ends: 324 [2019-10-13 19:38:01,127 INFO L226 Difference]: Without dead ends: 234 [2019-10-13 19:38:01,128 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:38:01,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2019-10-13 19:38:01,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2019-10-13 19:38:01,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-10-13 19:38:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2019-10-13 19:38:01,200 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 65 [2019-10-13 19:38:01,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:01,200 INFO L462 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2019-10-13 19:38:01,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:38:01,201 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2019-10-13 19:38:01,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-13 19:38:01,202 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:01,202 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] [2019-10-13 19:38:01,203 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:01,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:01,203 INFO L82 PathProgramCache]: Analyzing trace with hash -913158347, now seen corresponding path program 1 times [2019-10-13 19:38:01,203 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:01,204 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121713046] [2019-10-13 19:38:01,204 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:01,204 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:01,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,490 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,599 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 19:38:01,599 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121713046] [2019-10-13 19:38:01,599 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:01,600 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:01,600 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200236980] [2019-10-13 19:38:01,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:01,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:01,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:01,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:01,602 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand 8 states. [2019-10-13 19:38:02,182 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:03,679 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:03,962 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:04,255 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:04,497 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:05,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:05,127 INFO L93 Difference]: Finished difference Result 528 states and 662 transitions. [2019-10-13 19:38:05,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:38:05,127 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2019-10-13 19:38:05,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:05,133 INFO L225 Difference]: With dead ends: 528 [2019-10-13 19:38:05,133 INFO L226 Difference]: Without dead ends: 359 [2019-10-13 19:38:05,134 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:38:05,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2019-10-13 19:38:05,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2019-10-13 19:38:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2019-10-13 19:38:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 373 transitions. [2019-10-13 19:38:05,208 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 373 transitions. Word has length 79 [2019-10-13 19:38:05,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:05,209 INFO L462 AbstractCegarLoop]: Abstraction has 319 states and 373 transitions. [2019-10-13 19:38:05,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:05,209 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 373 transitions. [2019-10-13 19:38:05,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-13 19:38:05,211 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:05,211 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 19:38:05,212 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:05,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:05,212 INFO L82 PathProgramCache]: Analyzing trace with hash 421166267, now seen corresponding path program 1 times [2019-10-13 19:38:05,212 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:05,213 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162299850] [2019-10-13 19:38:05,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:05,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:05,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,523 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,658 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 19:38:05,658 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162299850] [2019-10-13 19:38:05,659 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:05,659 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:38:05,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355756649] [2019-10-13 19:38:05,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:38:05,660 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:05,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:38:05,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:38:05,661 INFO L87 Difference]: Start difference. First operand 319 states and 373 transitions. Second operand 10 states. [2019-10-13 19:38:06,342 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:08,025 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:08,314 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:08,607 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:08,875 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:09,234 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:10,173 INFO L93 Difference]: Finished difference Result 707 states and 894 transitions. [2019-10-13 19:38:10,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:38:10,173 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2019-10-13 19:38:10,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:10,179 INFO L225 Difference]: With dead ends: 707 [2019-10-13 19:38:10,179 INFO L226 Difference]: Without dead ends: 527 [2019-10-13 19:38:10,180 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:38:10,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2019-10-13 19:38:10,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 459. [2019-10-13 19:38:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2019-10-13 19:38:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 544 transitions. [2019-10-13 19:38:10,266 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 544 transitions. Word has length 83 [2019-10-13 19:38:10,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:10,266 INFO L462 AbstractCegarLoop]: Abstraction has 459 states and 544 transitions. [2019-10-13 19:38:10,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:38:10,267 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 544 transitions. [2019-10-13 19:38:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-13 19:38:10,269 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:10,269 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 19:38:10,269 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:10,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:10,270 INFO L82 PathProgramCache]: Analyzing trace with hash 750932028, now seen corresponding path program 1 times [2019-10-13 19:38:10,270 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:10,270 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297730406] [2019-10-13 19:38:10,270 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:10,270 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:10,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,529 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,656 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 19:38:10,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297730406] [2019-10-13 19:38:10,656 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:10,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:10,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277031345] [2019-10-13 19:38:10,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:10,658 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:10,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:10,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:10,660 INFO L87 Difference]: Start difference. First operand 459 states and 544 transitions. Second operand 8 states. [2019-10-13 19:38:11,798 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:12,068 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:12,353 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:13,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:13,372 INFO L93 Difference]: Finished difference Result 839 states and 1035 transitions. [2019-10-13 19:38:13,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:38:13,373 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2019-10-13 19:38:13,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:13,378 INFO L225 Difference]: With dead ends: 839 [2019-10-13 19:38:13,378 INFO L226 Difference]: Without dead ends: 515 [2019-10-13 19:38:13,380 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:13,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2019-10-13 19:38:13,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 459. [2019-10-13 19:38:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2019-10-13 19:38:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 543 transitions. [2019-10-13 19:38:13,509 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 543 transitions. Word has length 83 [2019-10-13 19:38:13,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:13,510 INFO L462 AbstractCegarLoop]: Abstraction has 459 states and 543 transitions. [2019-10-13 19:38:13,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 543 transitions. [2019-10-13 19:38:13,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-13 19:38:13,515 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:13,515 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 19:38:13,516 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:13,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:13,516 INFO L82 PathProgramCache]: Analyzing trace with hash 678545470, now seen corresponding path program 1 times [2019-10-13 19:38:13,516 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:13,517 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142408029] [2019-10-13 19:38:13,517 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:13,517 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:13,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,848 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,006 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 19:38:14,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142408029] [2019-10-13 19:38:14,007 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:14,007 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:38:14,008 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685210614] [2019-10-13 19:38:14,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:38:14,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:14,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:38:14,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:14,016 INFO L87 Difference]: Start difference. First operand 459 states and 543 transitions. Second operand 12 states. [2019-10-13 19:38:15,034 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:15,312 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:15,568 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:16,314 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:16,582 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:38:16,862 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:17,115 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:18,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:18,230 INFO L93 Difference]: Finished difference Result 955 states and 1181 transitions. [2019-10-13 19:38:18,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:38:18,232 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2019-10-13 19:38:18,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:18,238 INFO L225 Difference]: With dead ends: 955 [2019-10-13 19:38:18,238 INFO L226 Difference]: Without dead ends: 520 [2019-10-13 19:38:18,239 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:38:18,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2019-10-13 19:38:18,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 466. [2019-10-13 19:38:18,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2019-10-13 19:38:18,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 550 transitions. [2019-10-13 19:38:18,355 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 550 transitions. Word has length 83 [2019-10-13 19:38:18,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:18,355 INFO L462 AbstractCegarLoop]: Abstraction has 466 states and 550 transitions. [2019-10-13 19:38:18,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:38:18,355 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 550 transitions. [2019-10-13 19:38:18,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 19:38:18,359 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:18,359 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:18,359 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:18,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:18,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1174041569, now seen corresponding path program 1 times [2019-10-13 19:38:18,360 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:18,360 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716020503] [2019-10-13 19:38:18,360 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:18,360 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:18,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,781 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:38:19,044 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716020503] [2019-10-13 19:38:19,044 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825295646] [2019-10-13 19:38:19,045 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 19:38:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-13 19:38:19,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:38:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:19,418 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:38:19,418 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-10-13 19:38:19,419 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245708798] [2019-10-13 19:38:19,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:19,419 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:19,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:19,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:38:19,420 INFO L87 Difference]: Start difference. First operand 466 states and 550 transitions. Second operand 8 states. [2019-10-13 19:38:20,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:20,115 INFO L93 Difference]: Finished difference Result 1313 states and 1584 transitions. [2019-10-13 19:38:20,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:38:20,116 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2019-10-13 19:38:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:20,121 INFO L225 Difference]: With dead ends: 1313 [2019-10-13 19:38:20,121 INFO L226 Difference]: Without dead ends: 871 [2019-10-13 19:38:20,123 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:38:20,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2019-10-13 19:38:20,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 868. [2019-10-13 19:38:20,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2019-10-13 19:38:20,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1026 transitions. [2019-10-13 19:38:20,284 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1026 transitions. Word has length 95 [2019-10-13 19:38:20,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:20,284 INFO L462 AbstractCegarLoop]: Abstraction has 868 states and 1026 transitions. [2019-10-13 19:38:20,285 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:20,285 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1026 transitions. [2019-10-13 19:38:20,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 19:38:20,288 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:20,288 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:20,493 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:38:20,493 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:20,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:20,494 INFO L82 PathProgramCache]: Analyzing trace with hash 175480453, now seen corresponding path program 1 times [2019-10-13 19:38:20,494 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:20,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708268698] [2019-10-13 19:38:20,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:20,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:20,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,846 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:38:20,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708268698] [2019-10-13 19:38:20,991 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:20,991 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-13 19:38:20,991 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741921197] [2019-10-13 19:38:20,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 19:38:20,992 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:20,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 19:38:20,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:38:20,993 INFO L87 Difference]: Start difference. First operand 868 states and 1026 transitions. Second operand 14 states. [2019-10-13 19:38:21,899 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:22,154 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:22,408 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:23,037 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:23,858 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:24,236 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:24,888 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:25,163 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:25,451 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:27,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:27,125 INFO L93 Difference]: Finished difference Result 1829 states and 2312 transitions. [2019-10-13 19:38:27,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-13 19:38:27,125 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2019-10-13 19:38:27,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:27,132 INFO L225 Difference]: With dead ends: 1829 [2019-10-13 19:38:27,132 INFO L226 Difference]: Without dead ends: 985 [2019-10-13 19:38:27,135 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2019-10-13 19:38:27,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2019-10-13 19:38:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 802. [2019-10-13 19:38:27,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 802 states. [2019-10-13 19:38:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 934 transitions. [2019-10-13 19:38:27,282 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 934 transitions. Word has length 99 [2019-10-13 19:38:27,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:27,282 INFO L462 AbstractCegarLoop]: Abstraction has 802 states and 934 transitions. [2019-10-13 19:38:27,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 19:38:27,282 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 934 transitions. [2019-10-13 19:38:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 19:38:27,285 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:27,285 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:27,286 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:27,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:27,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1676429373, now seen corresponding path program 1 times [2019-10-13 19:38:27,286 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:27,286 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774178245] [2019-10-13 19:38:27,286 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:27,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:27,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat