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_spec5_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:08:04,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:08:04,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:08:04,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:08:04,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:08:04,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:08:04,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:08:04,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:08:04,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:08:04,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:08:04,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:08:04,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:08:04,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:08:04,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:08:04,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:08:04,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:08:04,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:08:04,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:08:04,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:08:04,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:08:04,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:08:04,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:08:04,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:08:04,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:08:04,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:08:04,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:08:04,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:08:04,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:08:04,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:08:04,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:08:04,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:08:04,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:08:04,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:08:04,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:08:04,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:08:04,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:08:04,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:08:04,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:08:04,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:08:04,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:08:04,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:08:04,129 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 [2019-09-20 13:08:04,150 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:08:04,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:08:04,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:08:04,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:08:04,153 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:08:04,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:08:04,154 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:08:04,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:08:04,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:08:04,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:08:04,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:08:04,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:08:04,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:08:04,157 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:08:04,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:08:04,157 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:08:04,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:08:04,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:08:04,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:08:04,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:08:04,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:08:04,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:08:04,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:08:04,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:08:04,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:08:04,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:08:04,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:08:04,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:08:04,160 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:08:04,211 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:08:04,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:08:04,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:08:04,235 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:08:04,236 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:08:04,236 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2019-09-20 13:08:04,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea1cb4092/9a835c70a7224d91a4814916088193ad/FLAGe38468fd3 [2019-09-20 13:08:04,891 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:08:04,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2019-09-20 13:08:04,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea1cb4092/9a835c70a7224d91a4814916088193ad/FLAGe38468fd3 [2019-09-20 13:08:05,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea1cb4092/9a835c70a7224d91a4814916088193ad [2019-09-20 13:08:05,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:08:05,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:08:05,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:08:05,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:08:05,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:08:05,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:08:05" (1/1) ... [2019-09-20 13:08:05,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b1e4a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:05, skipping insertion in model container [2019-09-20 13:08:05,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:08:05" (1/1) ... [2019-09-20 13:08:05,201 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:08:05,251 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:08:05,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:08:05,770 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:08:05,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:08:05,898 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:08:05,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:05 WrapperNode [2019-09-20 13:08:05,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:08:05,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:08:05,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:08:05,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:08:05,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:05" (1/1) ... [2019-09-20 13:08:05,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:05" (1/1) ... [2019-09-20 13:08:05,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:05" (1/1) ... [2019-09-20 13:08:05,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:05" (1/1) ... [2019-09-20 13:08:05,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:05" (1/1) ... [2019-09-20 13:08:05,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:05" (1/1) ... [2019-09-20 13:08:05,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:05" (1/1) ... [2019-09-20 13:08:05,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:08:05,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:08:06,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:08:06,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:08:06,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:05" (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 [2019-09-20 13:08:06,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:08:06,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:08:06,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:08:06,060 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:08:06,060 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:08:06,060 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:08:06,060 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:08:06,060 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:08:06,061 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:08:06,061 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:08:06,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:08:06,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:08:06,061 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:08:06,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:08:06,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:08:06,062 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:08:06,062 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:08:06,062 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:08:06,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:08:06,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:08:06,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:08:06,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:08:06,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:08:06,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:08:06,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:08:06,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:08:06,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:08:06,064 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:08:06,064 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:08:06,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:08:06,064 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:08:06,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:08:06,064 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:08:06,065 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:08:06,065 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:08:06,065 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:08:06,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:08:06,065 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:08:06,065 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:08:06,066 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:08:06,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:08:06,066 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:08:06,066 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:08:06,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:08:06,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:08:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:08:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:08:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:08:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:08:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:08:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:08:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:08:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:08:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:08:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:08:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:08:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:08:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:08:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:08:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:08:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:08:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:08:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:08:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:08:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:08:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:08:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:08:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:08:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:08:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:08:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:08:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:08:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:08:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:08:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:08:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:08:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:08:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:08:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:08:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:08:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:08:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:08:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:08:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:08:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:08:06,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:08:06,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:08:06,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:08:06,072 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:08:06,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:08:06,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:08:06,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:08:06,073 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:08:06,073 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:08:06,073 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:08:06,073 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:08:06,073 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:08:06,073 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:08:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:08:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:08:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:08:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:08:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:08:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:08:07,141 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:08:07,142 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:08:07,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:08:07 BoogieIcfgContainer [2019-09-20 13:08:07,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:08:07,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:08:07,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:08:07,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:08:07,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:08:05" (1/3) ... [2019-09-20 13:08:07,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a3df73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:08:07, skipping insertion in model container [2019-09-20 13:08:07,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:05" (2/3) ... [2019-09-20 13:08:07,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a3df73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:08:07, skipping insertion in model container [2019-09-20 13:08:07,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:08:07" (3/3) ... [2019-09-20 13:08:07,154 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product60.cil.c [2019-09-20 13:08:07,163 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:08:07,175 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:08:07,191 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:08:07,230 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:08:07,231 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:08:07,231 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:08:07,231 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:08:07,231 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:08:07,232 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:08:07,232 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:08:07,232 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:08:07,232 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:08:07,260 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2019-09-20 13:08:07,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:08:07,270 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:07,271 INFO L407 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] [2019-09-20 13:08:07,273 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:07,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:07,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1771327782, now seen corresponding path program 1 times [2019-09-20 13:08:07,281 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:07,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:07,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:07,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:07,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:07,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:07,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:07,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:08:07,665 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:08:07,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:08:07,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:07,682 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 2 states. [2019-09-20 13:08:07,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:07,740 INFO L93 Difference]: Finished difference Result 322 states and 393 transitions. [2019-09-20 13:08:07,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:08:07,742 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:08:07,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:07,760 INFO L225 Difference]: With dead ends: 322 [2019-09-20 13:08:07,760 INFO L226 Difference]: Without dead ends: 163 [2019-09-20 13:08:07,767 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:07,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2019-09-20 13:08:07,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2019-09-20 13:08:07,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2019-09-20 13:08:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2019-09-20 13:08:07,874 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 59 [2019-09-20 13:08:07,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:07,875 INFO L475 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2019-09-20 13:08:07,875 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:08:07,875 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2019-09-20 13:08:07,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:08:07,887 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:07,888 INFO L407 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] [2019-09-20 13:08:07,888 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:07,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:07,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1467126020, now seen corresponding path program 1 times [2019-09-20 13:08:07,890 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:07,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:07,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:07,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:07,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:08,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:08,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:08:08,085 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:08:08,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:08:08,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:08,085 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand 3 states. [2019-09-20 13:08:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:08,121 INFO L93 Difference]: Finished difference Result 261 states and 303 transitions. [2019-09-20 13:08:08,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:08:08,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:08:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:08,126 INFO L225 Difference]: With dead ends: 261 [2019-09-20 13:08:08,127 INFO L226 Difference]: Without dead ends: 154 [2019-09-20 13:08:08,129 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:08,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-09-20 13:08:08,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2019-09-20 13:08:08,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-09-20 13:08:08,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2019-09-20 13:08:08,158 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 60 [2019-09-20 13:08:08,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:08,158 INFO L475 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2019-09-20 13:08:08,159 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:08:08,159 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2019-09-20 13:08:08,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:08:08,162 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:08,162 INFO L407 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] [2019-09-20 13:08:08,162 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:08,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:08,164 INFO L82 PathProgramCache]: Analyzing trace with hash 2049486337, now seen corresponding path program 1 times [2019-09-20 13:08:08,164 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:08,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:08,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:08,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:08,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:08,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:08,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:08,414 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:08,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:08,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:08,415 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand 7 states. [2019-09-20 13:08:09,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:09,106 INFO L93 Difference]: Finished difference Result 462 states and 554 transitions. [2019-09-20 13:08:09,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:08:09,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:08:09,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:09,115 INFO L225 Difference]: With dead ends: 462 [2019-09-20 13:08:09,115 INFO L226 Difference]: Without dead ends: 336 [2019-09-20 13:08:09,121 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:08:09,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2019-09-20 13:08:09,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 324. [2019-09-20 13:08:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-09-20 13:08:09,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 388 transitions. [2019-09-20 13:08:09,197 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 388 transitions. Word has length 65 [2019-09-20 13:08:09,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:09,199 INFO L475 AbstractCegarLoop]: Abstraction has 324 states and 388 transitions. [2019-09-20 13:08:09,199 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:09,200 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 388 transitions. [2019-09-20 13:08:09,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:08:09,202 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:09,203 INFO L407 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] [2019-09-20 13:08:09,203 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:09,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:09,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1476281748, now seen corresponding path program 1 times [2019-09-20 13:08:09,204 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:09,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:09,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:09,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:09,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:08:09,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:09,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:09,337 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:09,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:09,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:09,338 INFO L87 Difference]: Start difference. First operand 324 states and 388 transitions. Second operand 7 states. [2019-09-20 13:08:10,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:10,176 INFO L93 Difference]: Finished difference Result 808 states and 1036 transitions. [2019-09-20 13:08:10,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:08:10,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:08:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:10,183 INFO L225 Difference]: With dead ends: 808 [2019-09-20 13:08:10,183 INFO L226 Difference]: Without dead ends: 512 [2019-09-20 13:08:10,186 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:10,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2019-09-20 13:08:10,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 458. [2019-09-20 13:08:10,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2019-09-20 13:08:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 547 transitions. [2019-09-20 13:08:10,239 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 547 transitions. Word has length 70 [2019-09-20 13:08:10,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:10,240 INFO L475 AbstractCegarLoop]: Abstraction has 458 states and 547 transitions. [2019-09-20 13:08:10,240 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:10,240 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 547 transitions. [2019-09-20 13:08:10,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:08:10,242 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:10,243 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:10,243 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:10,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:10,243 INFO L82 PathProgramCache]: Analyzing trace with hash 340334758, now seen corresponding path program 1 times [2019-09-20 13:08:10,244 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:10,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:10,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:10,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:10,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:10,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:10,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:08:10,412 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:08:10,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:08:10,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:08:10,413 INFO L87 Difference]: Start difference. First operand 458 states and 547 transitions. Second operand 6 states. [2019-09-20 13:08:10,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:10,473 INFO L93 Difference]: Finished difference Result 902 states and 1110 transitions. [2019-09-20 13:08:10,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:08:10,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-09-20 13:08:10,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:10,479 INFO L225 Difference]: With dead ends: 902 [2019-09-20 13:08:10,479 INFO L226 Difference]: Without dead ends: 472 [2019-09-20 13:08:10,481 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:10,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2019-09-20 13:08:10,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 468. [2019-09-20 13:08:10,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2019-09-20 13:08:10,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2019-09-20 13:08:10,533 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 108 [2019-09-20 13:08:10,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:10,534 INFO L475 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2019-09-20 13:08:10,534 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:08:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2019-09-20 13:08:10,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:08:10,541 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:10,541 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:10,541 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:10,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:10,542 INFO L82 PathProgramCache]: Analyzing trace with hash -2026359836, now seen corresponding path program 1 times [2019-09-20 13:08:10,542 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:10,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:10,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:10,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:10,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:10,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:10,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:08:10,659 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:08:10,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:08:10,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:10,660 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 8 states. [2019-09-20 13:08:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:10,712 INFO L93 Difference]: Finished difference Result 922 states and 1130 transitions. [2019-09-20 13:08:10,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:08:10,712 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-09-20 13:08:10,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:10,716 INFO L225 Difference]: With dead ends: 922 [2019-09-20 13:08:10,717 INFO L226 Difference]: Without dead ends: 482 [2019-09-20 13:08:10,719 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:10,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2019-09-20 13:08:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 476. [2019-09-20 13:08:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2019-09-20 13:08:10,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 565 transitions. [2019-09-20 13:08:10,755 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 565 transitions. Word has length 108 [2019-09-20 13:08:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:10,755 INFO L475 AbstractCegarLoop]: Abstraction has 476 states and 565 transitions. [2019-09-20 13:08:10,755 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:08:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 565 transitions. [2019-09-20 13:08:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:08:10,759 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:10,759 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:10,759 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:10,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:10,760 INFO L82 PathProgramCache]: Analyzing trace with hash 2028067331, now seen corresponding path program 1 times [2019-09-20 13:08:10,760 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:10,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:10,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:10,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:10,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:10,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:10,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:08:10,854 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:10,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:10,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:10,855 INFO L87 Difference]: Start difference. First operand 476 states and 565 transitions. Second operand 4 states. [2019-09-20 13:08:11,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:11,183 INFO L93 Difference]: Finished difference Result 1484 states and 1846 transitions. [2019-09-20 13:08:11,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:11,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2019-09-20 13:08:11,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:11,193 INFO L225 Difference]: With dead ends: 1484 [2019-09-20 13:08:11,194 INFO L226 Difference]: Without dead ends: 1036 [2019-09-20 13:08:11,196 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:11,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2019-09-20 13:08:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1019. [2019-09-20 13:08:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2019-09-20 13:08:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1244 transitions. [2019-09-20 13:08:11,281 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1244 transitions. Word has length 108 [2019-09-20 13:08:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:11,281 INFO L475 AbstractCegarLoop]: Abstraction has 1019 states and 1244 transitions. [2019-09-20 13:08:11,281 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1244 transitions. [2019-09-20 13:08:11,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-20 13:08:11,288 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:11,288 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:11,289 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:11,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:11,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1144962269, now seen corresponding path program 1 times [2019-09-20 13:08:11,289 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:11,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:11,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:11,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:11,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:11,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:11,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:08:11,481 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:08:11,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:08:11,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:08:11,482 INFO L87 Difference]: Start difference. First operand 1019 states and 1244 transitions. Second operand 9 states. [2019-09-20 13:08:12,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:12,820 INFO L93 Difference]: Finished difference Result 2802 states and 3576 transitions. [2019-09-20 13:08:12,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:12,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2019-09-20 13:08:12,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:12,833 INFO L225 Difference]: With dead ends: 2802 [2019-09-20 13:08:12,834 INFO L226 Difference]: Without dead ends: 1997 [2019-09-20 13:08:12,838 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:12,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2019-09-20 13:08:12,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1764. [2019-09-20 13:08:12,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1764 states. [2019-09-20 13:08:12,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2119 transitions. [2019-09-20 13:08:12,955 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2119 transitions. Word has length 112 [2019-09-20 13:08:12,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:12,955 INFO L475 AbstractCegarLoop]: Abstraction has 1764 states and 2119 transitions. [2019-09-20 13:08:12,955 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:08:12,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2119 transitions. [2019-09-20 13:08:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-09-20 13:08:12,959 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:12,960 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:12,960 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:12,960 INFO L82 PathProgramCache]: Analyzing trace with hash 164237146, now seen corresponding path program 1 times [2019-09-20 13:08:12,961 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:12,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:12,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:12,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:12,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:08:13,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:13,107 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:13,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:13,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:08:13,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:13,561 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:13,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:08:13,563 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:08:13,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:08:13,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:08:13,564 INFO L87 Difference]: Start difference. First operand 1764 states and 2119 transitions. Second operand 16 states. [2019-09-20 13:08:15,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:15,321 INFO L93 Difference]: Finished difference Result 4039 states and 5054 transitions. [2019-09-20 13:08:15,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:08:15,322 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2019-09-20 13:08:15,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:15,342 INFO L225 Difference]: With dead ends: 4039 [2019-09-20 13:08:15,342 INFO L226 Difference]: Without dead ends: 2483 [2019-09-20 13:08:15,353 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2019-09-20 13:08:15,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2019-09-20 13:08:15,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2221. [2019-09-20 13:08:15,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2221 states. [2019-09-20 13:08:15,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 2637 transitions. [2019-09-20 13:08:15,616 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 2637 transitions. Word has length 174 [2019-09-20 13:08:15,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:15,617 INFO L475 AbstractCegarLoop]: Abstraction has 2221 states and 2637 transitions. [2019-09-20 13:08:15,618 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:08:15,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 2637 transitions. [2019-09-20 13:08:15,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2019-09-20 13:08:15,683 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:15,684 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:15,685 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:15,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:15,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1190190750, now seen corresponding path program 1 times [2019-09-20 13:08:15,685 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:15,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:15,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:15,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:15,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2019-09-20 13:08:15,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:15,879 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:15,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:16,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:08:16,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 220 proven. 4 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:16,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:16,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12] total 16 [2019-09-20 13:08:16,640 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:08:16,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:08:16,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:08:16,644 INFO L87 Difference]: Start difference. First operand 2221 states and 2637 transitions. Second operand 16 states. [2019-09-20 13:08:20,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:20,134 INFO L93 Difference]: Finished difference Result 5783 states and 7917 transitions. [2019-09-20 13:08:20,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-09-20 13:08:20,135 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 311 [2019-09-20 13:08:20,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:20,160 INFO L225 Difference]: With dead ends: 5783 [2019-09-20 13:08:20,160 INFO L226 Difference]: Without dead ends: 3624 [2019-09-20 13:08:20,170 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=1093, Unknown=0, NotChecked=0, Total=1332 [2019-09-20 13:08:20,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2019-09-20 13:08:20,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 2599. [2019-09-20 13:08:20,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2599 states. [2019-09-20 13:08:20,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 3034 transitions. [2019-09-20 13:08:20,376 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 3034 transitions. Word has length 311 [2019-09-20 13:08:20,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:20,377 INFO L475 AbstractCegarLoop]: Abstraction has 2599 states and 3034 transitions. [2019-09-20 13:08:20,377 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:08:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 3034 transitions. [2019-09-20 13:08:20,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2019-09-20 13:08:20,388 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:20,388 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:20,389 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:20,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:20,389 INFO L82 PathProgramCache]: Analyzing trace with hash 765163600, now seen corresponding path program 1 times [2019-09-20 13:08:20,389 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:20,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:20,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:20,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:20,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 98 proven. 55 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2019-09-20 13:08:20,679 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:20,679 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:20,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:20,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-20 13:08:20,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 255 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-09-20 13:08:21,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:21,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:08:21,208 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:08:21,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:08:21,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:08:21,209 INFO L87 Difference]: Start difference. First operand 2599 states and 3034 transitions. Second operand 20 states. [2019-09-20 13:08:23,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:23,628 INFO L93 Difference]: Finished difference Result 4964 states and 5842 transitions. [2019-09-20 13:08:23,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:23,629 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 323 [2019-09-20 13:08:23,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:23,655 INFO L225 Difference]: With dead ends: 4964 [2019-09-20 13:08:23,656 INFO L226 Difference]: Without dead ends: 2607 [2019-09-20 13:08:23,667 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:08:23,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2019-09-20 13:08:23,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2601. [2019-09-20 13:08:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2601 states. [2019-09-20 13:08:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3028 transitions. [2019-09-20 13:08:23,903 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3028 transitions. Word has length 323 [2019-09-20 13:08:23,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:23,904 INFO L475 AbstractCegarLoop]: Abstraction has 2601 states and 3028 transitions. [2019-09-20 13:08:23,904 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:08:23,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3028 transitions. [2019-09-20 13:08:23,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2019-09-20 13:08:23,932 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:23,933 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:23,933 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:23,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:23,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1051126645, now seen corresponding path program 1 times [2019-09-20 13:08:23,934 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:23,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:23,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:23,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:23,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 94 proven. 46 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2019-09-20 13:08:24,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:24,432 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:24,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:24,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:08:24,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:25,122 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 181 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-09-20 13:08:25,138 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:25,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:08:25,140 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:08:25,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:08:25,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:25,142 INFO L87 Difference]: Start difference. First operand 2601 states and 3028 transitions. Second operand 14 states. [2019-09-20 13:08:28,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:28,387 INFO L93 Difference]: Finished difference Result 5849 states and 7466 transitions. [2019-09-20 13:08:28,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-20 13:08:28,387 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 324 [2019-09-20 13:08:28,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:28,415 INFO L225 Difference]: With dead ends: 5849 [2019-09-20 13:08:28,415 INFO L226 Difference]: Without dead ends: 4280 [2019-09-20 13:08:28,424 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 343 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2019-09-20 13:08:28,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2019-09-20 13:08:28,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 3241. [2019-09-20 13:08:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2019-09-20 13:08:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 3775 transitions. [2019-09-20 13:08:28,691 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 3775 transitions. Word has length 324 [2019-09-20 13:08:28,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:28,693 INFO L475 AbstractCegarLoop]: Abstraction has 3241 states and 3775 transitions. [2019-09-20 13:08:28,693 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:08:28,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 3775 transitions. [2019-09-20 13:08:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2019-09-20 13:08:28,709 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:28,709 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:28,710 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:28,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:28,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1316466999, now seen corresponding path program 1 times [2019-09-20 13:08:28,710 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:28,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:28,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:28,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:28,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2019-09-20 13:08:28,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:28,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:08:28,925 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:08:28,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:08:28,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:28,926 INFO L87 Difference]: Start difference. First operand 3241 states and 3775 transitions. Second operand 3 states. [2019-09-20 13:08:29,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:29,057 INFO L93 Difference]: Finished difference Result 5218 states and 6092 transitions. [2019-09-20 13:08:29,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:08:29,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 371 [2019-09-20 13:08:29,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:29,069 INFO L225 Difference]: With dead ends: 5218 [2019-09-20 13:08:29,069 INFO L226 Difference]: Without dead ends: 2039 [2019-09-20 13:08:29,078 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:29,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2019-09-20 13:08:29,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1994. [2019-09-20 13:08:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1994 states. [2019-09-20 13:08:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 2285 transitions. [2019-09-20 13:08:29,215 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 2285 transitions. Word has length 371 [2019-09-20 13:08:29,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:29,216 INFO L475 AbstractCegarLoop]: Abstraction has 1994 states and 2285 transitions. [2019-09-20 13:08:29,216 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:08:29,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 2285 transitions. [2019-09-20 13:08:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2019-09-20 13:08:29,235 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:29,236 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:29,236 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:29,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:29,237 INFO L82 PathProgramCache]: Analyzing trace with hash -235519252, now seen corresponding path program 1 times [2019-09-20 13:08:29,237 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:29,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:29,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:29,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:29,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 159 proven. 8 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2019-09-20 13:08:29,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:29,696 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:29,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:30,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-20 13:08:30,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:30,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:08:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 337 proven. 16 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-09-20 13:08:30,296 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:30,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2019-09-20 13:08:30,301 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:08:30,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:08:30,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:30,305 INFO L87 Difference]: Start difference. First operand 1994 states and 2285 transitions. Second operand 19 states. [2019-09-20 13:08:33,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:33,589 INFO L93 Difference]: Finished difference Result 4167 states and 4804 transitions. [2019-09-20 13:08:33,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-20 13:08:33,589 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 374 [2019-09-20 13:08:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:33,600 INFO L225 Difference]: With dead ends: 4167 [2019-09-20 13:08:33,600 INFO L226 Difference]: Without dead ends: 1946 [2019-09-20 13:08:33,607 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2019-09-20 13:08:33,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2019-09-20 13:08:33,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1754. [2019-09-20 13:08:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1754 states. [2019-09-20 13:08:33,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 1972 transitions. [2019-09-20 13:08:33,700 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 1972 transitions. Word has length 374 [2019-09-20 13:08:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:33,701 INFO L475 AbstractCegarLoop]: Abstraction has 1754 states and 1972 transitions. [2019-09-20 13:08:33,701 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:08:33,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 1972 transitions. [2019-09-20 13:08:33,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2019-09-20 13:08:33,711 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:33,711 INFO L407 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:33,712 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:33,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:33,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1416165539, now seen corresponding path program 1 times [2019-09-20 13:08:33,712 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:33,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:33,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:33,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:33,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 139 proven. 19 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2019-09-20 13:08:33,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:33,908 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:33,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:34,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 1592 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-20 13:08:34,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2019-09-20 13:08:34,408 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:08:34,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2019-09-20 13:08:34,409 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:08:34,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:08:34,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:34,410 INFO L87 Difference]: Start difference. First operand 1754 states and 1972 transitions. Second operand 13 states. [2019-09-20 13:08:34,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:34,463 INFO L93 Difference]: Finished difference Result 2153 states and 2413 transitions. [2019-09-20 13:08:34,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:08:34,464 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 419 [2019-09-20 13:08:34,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:34,465 INFO L225 Difference]: With dead ends: 2153 [2019-09-20 13:08:34,465 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:08:34,470 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:08:34,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:08:34,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:08:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:08:34,471 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 419 [2019-09-20 13:08:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:34,472 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:08:34,472 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:08:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:08:34,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:08:34,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.