java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:36:47,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:36:47,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:36:47,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:36:47,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:36:47,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:36:47,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:36:47,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:36:47,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:36:47,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:36:47,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:36:47,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:36:47,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:36:47,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:36:47,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:36:47,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:36:47,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:36:47,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:36:47,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:36:47,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:36:47,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:36:47,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:36:47,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:36:47,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:36:47,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:36:47,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:36:47,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:36:47,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:36:47,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:36:47,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:36:47,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:36:47,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:36:47,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:36:47,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:36:47,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:36:47,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:36:47,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:36:47,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:36:47,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:36:47,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:36:47,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:36:47,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:36:47,131 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:36:47,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:36:47,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:36:47,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:36:47,133 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:36:47,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:36:47,134 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:36:47,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:36:47,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:36:47,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:36:47,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:36:47,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:36:47,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:36:47,135 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:36:47,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:36:47,135 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:36:47,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:36:47,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:36:47,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:36:47,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:36:47,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:36:47,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:47,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:36:47,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:36:47,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:36:47,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:36:47,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:36:47,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:36:47,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:36:47,418 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:36:47,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:36:47,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:36:47,447 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:36:47,448 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:36:47,449 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2019-10-14 23:36:47,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a1af9e25/cc13027a035e459da0350e36033e709d/FLAG7fe187e9b [2019-10-14 23:36:48,091 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:36:48,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2019-10-14 23:36:48,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a1af9e25/cc13027a035e459da0350e36033e709d/FLAG7fe187e9b [2019-10-14 23:36:48,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a1af9e25/cc13027a035e459da0350e36033e709d [2019-10-14 23:36:48,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:36:48,313 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:36:48,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:48,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:36:48,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:36:48,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:48" (1/1) ... [2019-10-14 23:36:48,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d8d832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:48, skipping insertion in model container [2019-10-14 23:36:48,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:48" (1/1) ... [2019-10-14 23:36:48,332 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:36:48,402 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:36:48,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:48,877 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:36:48,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:49,024 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:36:49,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:49 WrapperNode [2019-10-14 23:36:49,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:49,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:36:49,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:36:49,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:36:49,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:49" (1/1) ... [2019-10-14 23:36:49,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:49" (1/1) ... [2019-10-14 23:36:49,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:49" (1/1) ... [2019-10-14 23:36:49,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:49" (1/1) ... [2019-10-14 23:36:49,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:49" (1/1) ... [2019-10-14 23:36:49,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:49" (1/1) ... [2019-10-14 23:36:49,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:49" (1/1) ... [2019-10-14 23:36:49,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:36:49,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:36:49,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:36:49,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:36:49,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:36:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:36:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:36:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:36:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:36:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:36:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:36:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:36:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:36:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-14 23:36:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:36:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:36:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:36:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:36:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:36:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:36:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:36:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:36:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:36:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:36:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:36:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:36:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:36:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:36:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:36:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:36:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:36:49,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:36:49,197 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:36:49,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:36:49,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:49,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:49,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:49,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:36:49,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:36:49,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:36:49,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:36:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:36:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:36:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:36:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:36:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:36:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:36:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:36:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:36:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:36:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:36:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:36:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:36:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:36:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:36:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:36:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:36:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:36:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:36:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:36:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:36:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-14 23:36:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:36:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:36:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:36:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:36:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:36:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:36:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:36:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:36:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:36:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:36:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:36:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:36:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:36:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:36:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:36:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:36:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:36:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:36:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:36:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:36:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:36:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:36:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:36:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:36:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:36:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:36:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:36:50,284 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:36:50,284 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:36:50,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:50 BoogieIcfgContainer [2019-10-14 23:36:50,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:36:50,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:36:50,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:36:50,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:36:50,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:36:48" (1/3) ... [2019-10-14 23:36:50,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703f3b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:50, skipping insertion in model container [2019-10-14 23:36:50,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:49" (2/3) ... [2019-10-14 23:36:50,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703f3b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:50, skipping insertion in model container [2019-10-14 23:36:50,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:50" (3/3) ... [2019-10-14 23:36:50,296 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2019-10-14 23:36:50,306 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:36:50,315 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:36:50,326 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:36:50,360 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:36:50,360 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:36:50,360 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:36:50,360 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:36:50,361 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:36:50,361 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:36:50,361 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:36:50,361 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:36:50,383 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2019-10-14 23:36:50,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:36:50,391 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:50,393 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:50,395 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:50,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:50,400 INFO L82 PathProgramCache]: Analyzing trace with hash 177325019, now seen corresponding path program 1 times [2019-10-14 23:36:50,409 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:50,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107167320] [2019-10-14 23:36:50,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:50,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:50,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,076 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:51,196 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107167320] [2019-10-14 23:36:51,197 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:51,198 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:36:51,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005607465] [2019-10-14 23:36:51,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:36:51,209 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:51,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:36:51,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:36:51,230 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2019-10-14 23:36:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:52,326 INFO L93 Difference]: Finished difference Result 287 states and 375 transitions. [2019-10-14 23:36:52,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:36:52,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-14 23:36:52,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:52,354 INFO L225 Difference]: With dead ends: 287 [2019-10-14 23:36:52,354 INFO L226 Difference]: Without dead ends: 155 [2019-10-14 23:36:52,363 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:36:52,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-10-14 23:36:52,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2019-10-14 23:36:52,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-10-14 23:36:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2019-10-14 23:36:52,479 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 52 [2019-10-14 23:36:52,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:52,479 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2019-10-14 23:36:52,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:36:52,480 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2019-10-14 23:36:52,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-14 23:36:52,483 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:52,483 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:52,484 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:52,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:52,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1842882407, now seen corresponding path program 1 times [2019-10-14 23:36:52,484 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:52,485 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986959232] [2019-10-14 23:36:52,485 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:52,485 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:52,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,866 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:52,910 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986959232] [2019-10-14 23:36:52,911 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:52,911 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:36:52,911 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731192953] [2019-10-14 23:36:52,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:36:52,926 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:52,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:36:52,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:52,927 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 4 states. [2019-10-14 23:36:53,421 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:54,255 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2019-10-14 23:36:54,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:36:54,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-14 23:36:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:54,260 INFO L225 Difference]: With dead ends: 220 [2019-10-14 23:36:54,260 INFO L226 Difference]: Without dead ends: 139 [2019-10-14 23:36:54,262 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:36:54,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-10-14 23:36:54,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2019-10-14 23:36:54,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-10-14 23:36:54,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2019-10-14 23:36:54,294 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 53 [2019-10-14 23:36:54,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:54,294 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2019-10-14 23:36:54,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:36:54,295 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2019-10-14 23:36:54,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:36:54,297 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:54,297 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:54,297 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:54,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:54,298 INFO L82 PathProgramCache]: Analyzing trace with hash 774651483, now seen corresponding path program 1 times [2019-10-14 23:36:54,298 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:54,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663025580] [2019-10-14 23:36:54,299 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:54,299 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:54,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,674 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:54,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:54,832 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663025580] [2019-10-14 23:36:54,833 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:54,833 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:54,833 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107984140] [2019-10-14 23:36:54,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:54,834 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:54,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:54,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:54,835 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 8 states. [2019-10-14 23:36:55,373 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:36:55,725 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:56,029 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:36:56,278 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:36:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:57,461 INFO L93 Difference]: Finished difference Result 229 states and 280 transitions. [2019-10-14 23:36:57,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:36:57,462 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-14 23:36:57,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:57,464 INFO L225 Difference]: With dead ends: 229 [2019-10-14 23:36:57,464 INFO L226 Difference]: Without dead ends: 139 [2019-10-14 23:36:57,465 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:36:57,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-10-14 23:36:57,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2019-10-14 23:36:57,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-10-14 23:36:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2019-10-14 23:36:57,496 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 57 [2019-10-14 23:36:57,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:57,497 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2019-10-14 23:36:57,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2019-10-14 23:36:57,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-14 23:36:57,499 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:57,499 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:57,500 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:57,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:57,500 INFO L82 PathProgramCache]: Analyzing trace with hash -771193848, now seen corresponding path program 1 times [2019-10-14 23:36:57,500 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:57,501 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298335754] [2019-10-14 23:36:57,501 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:57,501 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:57,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,807 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:57,918 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298335754] [2019-10-14 23:36:57,918 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:57,918 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:36:57,919 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579175903] [2019-10-14 23:36:57,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:36:57,919 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:57,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:36:57,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:36:57,921 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 6 states. [2019-10-14 23:36:58,358 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:36:59,616 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:00,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:00,222 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2019-10-14 23:37:00,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:37:00,222 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2019-10-14 23:37:00,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:00,225 INFO L225 Difference]: With dead ends: 324 [2019-10-14 23:37:00,225 INFO L226 Difference]: Without dead ends: 234 [2019-10-14 23:37:00,226 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:37:00,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2019-10-14 23:37:00,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2019-10-14 23:37:00,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-10-14 23:37:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2019-10-14 23:37:00,275 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 65 [2019-10-14 23:37:00,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:00,276 INFO L462 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2019-10-14 23:37:00,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:37:00,276 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2019-10-14 23:37:00,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-14 23:37:00,277 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:00,278 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:00,278 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:00,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:00,278 INFO L82 PathProgramCache]: Analyzing trace with hash -913158347, now seen corresponding path program 1 times [2019-10-14 23:37:00,279 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:00,279 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852161765] [2019-10-14 23:37:00,279 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:00,279 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:00,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,610 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:00,701 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852161765] [2019-10-14 23:37:00,701 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:00,701 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:00,701 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355601351] [2019-10-14 23:37:00,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:00,702 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:00,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:00,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:00,703 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand 8 states. [2019-10-14 23:37:01,182 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:02,691 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:02,996 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:03,264 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:03,534 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:04,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:04,169 INFO L93 Difference]: Finished difference Result 528 states and 662 transitions. [2019-10-14 23:37:04,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:37:04,170 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2019-10-14 23:37:04,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:04,174 INFO L225 Difference]: With dead ends: 528 [2019-10-14 23:37:04,174 INFO L226 Difference]: Without dead ends: 359 [2019-10-14 23:37:04,175 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2019-10-14 23:37:04,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2019-10-14 23:37:04,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2019-10-14 23:37:04,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 373 transitions. [2019-10-14 23:37:04,256 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 373 transitions. Word has length 79 [2019-10-14 23:37:04,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:04,256 INFO L462 AbstractCegarLoop]: Abstraction has 319 states and 373 transitions. [2019-10-14 23:37:04,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 373 transitions. [2019-10-14 23:37:04,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-14 23:37:04,258 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:04,259 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:04,259 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:04,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:04,260 INFO L82 PathProgramCache]: Analyzing trace with hash 421166267, now seen corresponding path program 1 times [2019-10-14 23:37:04,260 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:04,260 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384428237] [2019-10-14 23:37:04,261 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:04,261 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:04,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,683 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:04,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384428237] [2019-10-14 23:37:04,832 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:04,832 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:37:04,833 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720090534] [2019-10-14 23:37:04,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:37:04,834 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:04,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:37:04,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:37:04,835 INFO L87 Difference]: Start difference. First operand 319 states and 373 transitions. Second operand 10 states. [2019-10-14 23:37:05,368 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:07,032 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:07,344 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:07,618 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:07,863 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:08,215 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:09,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:09,135 INFO L93 Difference]: Finished difference Result 707 states and 894 transitions. [2019-10-14 23:37:09,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:37:09,136 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2019-10-14 23:37:09,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:09,141 INFO L225 Difference]: With dead ends: 707 [2019-10-14 23:37:09,141 INFO L226 Difference]: Without dead ends: 527 [2019-10-14 23:37:09,143 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:37:09,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2019-10-14 23:37:09,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 459. [2019-10-14 23:37:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2019-10-14 23:37:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 544 transitions. [2019-10-14 23:37:09,230 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 544 transitions. Word has length 83 [2019-10-14 23:37:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:09,230 INFO L462 AbstractCegarLoop]: Abstraction has 459 states and 544 transitions. [2019-10-14 23:37:09,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:37:09,231 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 544 transitions. [2019-10-14 23:37:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-14 23:37:09,232 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:09,233 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:09,233 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:09,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:09,234 INFO L82 PathProgramCache]: Analyzing trace with hash 750932028, now seen corresponding path program 1 times [2019-10-14 23:37:09,234 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:09,234 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762510429] [2019-10-14 23:37:09,234 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:09,234 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:09,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,498 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:09,616 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762510429] [2019-10-14 23:37:09,616 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:09,617 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:09,617 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512755001] [2019-10-14 23:37:09,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:09,617 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:09,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:09,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:09,618 INFO L87 Difference]: Start difference. First operand 459 states and 544 transitions. Second operand 8 states. [2019-10-14 23:37:10,892 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:11,161 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:11,445 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:12,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:12,422 INFO L93 Difference]: Finished difference Result 839 states and 1035 transitions. [2019-10-14 23:37:12,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:37:12,427 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2019-10-14 23:37:12,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:12,431 INFO L225 Difference]: With dead ends: 839 [2019-10-14 23:37:12,431 INFO L226 Difference]: Without dead ends: 515 [2019-10-14 23:37:12,432 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:12,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2019-10-14 23:37:12,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 459. [2019-10-14 23:37:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2019-10-14 23:37:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 543 transitions. [2019-10-14 23:37:12,508 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 543 transitions. Word has length 83 [2019-10-14 23:37:12,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:12,510 INFO L462 AbstractCegarLoop]: Abstraction has 459 states and 543 transitions. [2019-10-14 23:37:12,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:12,510 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 543 transitions. [2019-10-14 23:37:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-14 23:37:12,512 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:12,512 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:12,512 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:12,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:12,512 INFO L82 PathProgramCache]: Analyzing trace with hash 678545470, now seen corresponding path program 1 times [2019-10-14 23:37:12,512 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:12,513 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056226849] [2019-10-14 23:37:12,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:12,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:12,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,787 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:12,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056226849] [2019-10-14 23:37:12,948 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:12,948 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:37:12,949 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336292383] [2019-10-14 23:37:12,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:37:12,955 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:12,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:37:12,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:12,956 INFO L87 Difference]: Start difference. First operand 459 states and 543 transitions. Second operand 12 states. [2019-10-14 23:37:13,782 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:14,053 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:14,309 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:15,087 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:15,352 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:37:15,655 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:15,934 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:17,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:17,147 INFO L93 Difference]: Finished difference Result 955 states and 1181 transitions. [2019-10-14 23:37:17,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:37:17,151 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2019-10-14 23:37:17,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:17,155 INFO L225 Difference]: With dead ends: 955 [2019-10-14 23:37:17,155 INFO L226 Difference]: Without dead ends: 520 [2019-10-14 23:37:17,158 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:37:17,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2019-10-14 23:37:17,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 466. [2019-10-14 23:37:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2019-10-14 23:37:17,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 550 transitions. [2019-10-14 23:37:17,233 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 550 transitions. Word has length 83 [2019-10-14 23:37:17,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:17,234 INFO L462 AbstractCegarLoop]: Abstraction has 466 states and 550 transitions. [2019-10-14 23:37:17,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:37:17,234 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 550 transitions. [2019-10-14 23:37:17,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-14 23:37:17,236 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:17,236 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:17,237 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:17,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:17,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1174041569, now seen corresponding path program 1 times [2019-10-14 23:37:17,237 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:17,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758335374] [2019-10-14 23:37:17,238 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:17,238 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:17,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,523 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:37:17,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758335374] [2019-10-14 23:37:17,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812649454] [2019-10-14 23:37:17,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:37:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-14 23:37:17,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:37:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:18,112 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:37:18,112 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-10-14 23:37:18,112 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605522373] [2019-10-14 23:37:18,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:18,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:18,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:18,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:37:18,114 INFO L87 Difference]: Start difference. First operand 466 states and 550 transitions. Second operand 8 states. [2019-10-14 23:37:18,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:18,969 INFO L93 Difference]: Finished difference Result 1313 states and 1584 transitions. [2019-10-14 23:37:18,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:18,970 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2019-10-14 23:37:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:18,975 INFO L225 Difference]: With dead ends: 1313 [2019-10-14 23:37:18,976 INFO L226 Difference]: Without dead ends: 871 [2019-10-14 23:37:18,978 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:37:18,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2019-10-14 23:37:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 868. [2019-10-14 23:37:19,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2019-10-14 23:37:19,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1026 transitions. [2019-10-14 23:37:19,141 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1026 transitions. Word has length 95 [2019-10-14 23:37:19,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:19,141 INFO L462 AbstractCegarLoop]: Abstraction has 868 states and 1026 transitions. [2019-10-14 23:37:19,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:19,141 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1026 transitions. [2019-10-14 23:37:19,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-14 23:37:19,144 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:19,145 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:19,349 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:37:19,349 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:19,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:19,351 INFO L82 PathProgramCache]: Analyzing trace with hash 175480453, now seen corresponding path program 1 times [2019-10-14 23:37:19,351 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:19,351 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170715264] [2019-10-14 23:37:19,352 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:19,352 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:19,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:19,872 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:37:20,145 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170715264] [2019-10-14 23:37:20,145 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:20,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-14 23:37:20,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641058628] [2019-10-14 23:37:20,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 23:37:20,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:20,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 23:37:20,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:20,147 INFO L87 Difference]: Start difference. First operand 868 states and 1026 transitions. Second operand 14 states. [2019-10-14 23:37:21,122 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:21,436 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:21,725 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:22,417 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:23,363 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:23,769 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:24,454 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:24,736 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:25,062 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190