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_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:37:25,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:37:25,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:37:25,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:37:25,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:37:25,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:37:25,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:37:25,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:37:25,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:37:25,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:37:25,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:37:25,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:37:25,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:37:25,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:37:25,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:37:25,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:37:25,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:37:25,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:37:25,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:37:25,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:37:25,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:37:25,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:37:25,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:37:25,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:37:25,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:37:25,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:37:25,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:37:25,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:37:25,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:37:25,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:37:25,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:37:25,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:37:25,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:37:25,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:37:25,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:37:25,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:37:25,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:37:25,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:37:25,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:37:25,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:37:25,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:37:25,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:37:25,154 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:37:25,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:37:25,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:37:25,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:37:25,158 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:37:25,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:37:25,159 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:37:25,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:37:25,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:37:25,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:37:25,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:37:25,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:37:25,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:37:25,160 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:37:25,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:37:25,161 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:37:25,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:37:25,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:37:25,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:37:25,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:37:25,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:37:25,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:37:25,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:37:25,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:37:25,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:37:25,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:37:25,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:37:25,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:37:25,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:37:25,431 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:37:25,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:37:25,451 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:37:25,453 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:37:25,453 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:37:25,454 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product33.cil.c [2019-10-13 19:37:25,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fca5e83e/c99b6687d95b419095c37c4f0dd2d150/FLAG1f429fbb6 [2019-10-13 19:37:26,049 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:37:26,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product33.cil.c [2019-10-13 19:37:26,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fca5e83e/c99b6687d95b419095c37c4f0dd2d150/FLAG1f429fbb6 [2019-10-13 19:37:26,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fca5e83e/c99b6687d95b419095c37c4f0dd2d150 [2019-10-13 19:37:26,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:37:26,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:37:26,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:26,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:37:26,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:37:26,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:26" (1/1) ... [2019-10-13 19:37:26,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f542093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:26, skipping insertion in model container [2019-10-13 19:37:26,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:26" (1/1) ... [2019-10-13 19:37:26,397 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:37:26,460 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:37:26,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:26,889 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:37:26,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:27,025 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:37:27,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:27 WrapperNode [2019-10-13 19:37:27,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:27,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:37:27,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:37:27,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:37:27,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:27" (1/1) ... [2019-10-13 19:37:27,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:27" (1/1) ... [2019-10-13 19:37:27,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:27" (1/1) ... [2019-10-13 19:37:27,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:27" (1/1) ... [2019-10-13 19:37:27,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:27" (1/1) ... [2019-10-13 19:37:27,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:27" (1/1) ... [2019-10-13 19:37:27,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:27" (1/1) ... [2019-10-13 19:37:27,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:37:27,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:37:27,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:37:27,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:37:27,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:37:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:37:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:37:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:37:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:37:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:37:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:37:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:37:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:37:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:37:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:37:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:37:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:37:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:37:27,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:37:27,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:37:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:37:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:37:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:37:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:37:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:37:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:37:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:37:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:37:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:37:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:37:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:37:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:37:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:37:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:37:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:37:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:37:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:37:27,195 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:37:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:37:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:37:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:37:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:37:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:37:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:37:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:37:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:37:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:37:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:37:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:37:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:37:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:37:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:37:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:37:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:37:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:37:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:37:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:37:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:37:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:37:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:37:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:37:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:37:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:37:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:37:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:37:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:37:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:37:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:37:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:37:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:37:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:37:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:37:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:37:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:37:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:37:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:37:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:37:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:37:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:37:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:37:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:37:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:37:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:37:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:37:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:37:28,269 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:37:28,269 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:37:28,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:28 BoogieIcfgContainer [2019-10-13 19:37:28,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:37:28,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:37:28,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:37:28,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:37:28,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:37:26" (1/3) ... [2019-10-13 19:37:28,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3748d265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:28, skipping insertion in model container [2019-10-13 19:37:28,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:27" (2/3) ... [2019-10-13 19:37:28,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3748d265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:28, skipping insertion in model container [2019-10-13 19:37:28,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:28" (3/3) ... [2019-10-13 19:37:28,282 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product33.cil.c [2019-10-13 19:37:28,292 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:37:28,303 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:37:28,315 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:37:28,355 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:37:28,356 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:37:28,356 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:37:28,356 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:37:28,357 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:37:28,357 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:37:28,357 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:37:28,357 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:37:28,384 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2019-10-13 19:37:28,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:37:28,393 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:28,394 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:28,396 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:28,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:28,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1697845513, now seen corresponding path program 1 times [2019-10-13 19:37:28,413 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:28,414 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037542583] [2019-10-13 19:37:28,414 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:28,414 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:28,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:29,094 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:29,212 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037542583] [2019-10-13 19:37:29,213 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:29,213 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:37:29,214 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420488605] [2019-10-13 19:37:29,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:37:29,223 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:29,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:37:29,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:37:29,242 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 3 states. [2019-10-13 19:37:30,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:30,358 INFO L93 Difference]: Finished difference Result 261 states and 345 transitions. [2019-10-13 19:37:30,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:37:30,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-13 19:37:30,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:30,375 INFO L225 Difference]: With dead ends: 261 [2019-10-13 19:37:30,375 INFO L226 Difference]: Without dead ends: 141 [2019-10-13 19:37:30,380 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:37:30,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-10-13 19:37:30,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 111. [2019-10-13 19:37:30,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-10-13 19:37:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 130 transitions. [2019-10-13 19:37:30,477 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 130 transitions. Word has length 52 [2019-10-13 19:37:30,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:30,477 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 130 transitions. [2019-10-13 19:37:30,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:37:30,478 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 130 transitions. [2019-10-13 19:37:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 19:37:30,482 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:30,482 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:30,483 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:30,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:30,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1118186443, now seen corresponding path program 1 times [2019-10-13 19:37:30,484 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:30,484 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602821125] [2019-10-13 19:37:30,484 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:30,485 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:30,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,864 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:30,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602821125] [2019-10-13 19:37:30,939 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:30,940 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:37:30,940 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234067985] [2019-10-13 19:37:30,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:37:30,953 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:30,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:37:30,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:37:30,955 INFO L87 Difference]: Start difference. First operand 111 states and 130 transitions. Second operand 4 states. [2019-10-13 19:37:31,539 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:32,237 INFO L93 Difference]: Finished difference Result 194 states and 236 transitions. [2019-10-13 19:37:32,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:37:32,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-13 19:37:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:32,240 INFO L225 Difference]: With dead ends: 194 [2019-10-13 19:37:32,240 INFO L226 Difference]: Without dead ends: 125 [2019-10-13 19:37:32,242 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:37:32,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-10-13 19:37:32,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 102. [2019-10-13 19:37:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-13 19:37:32,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2019-10-13 19:37:32,273 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 53 [2019-10-13 19:37:32,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:32,273 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2019-10-13 19:37:32,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:37:32,274 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2019-10-13 19:37:32,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:37:32,276 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:32,276 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:32,276 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:32,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:32,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1001368997, now seen corresponding path program 1 times [2019-10-13 19:37:32,277 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:32,277 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688870314] [2019-10-13 19:37:32,277 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:32,277 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:32,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,600 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:32,649 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688870314] [2019-10-13 19:37:32,649 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:32,649 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:37:32,650 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662219288] [2019-10-13 19:37:32,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:37:32,650 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:32,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:37:32,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:37:32,651 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand 4 states. [2019-10-13 19:37:32,963 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:33,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:33,567 INFO L93 Difference]: Finished difference Result 203 states and 250 transitions. [2019-10-13 19:37:33,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:37:33,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2019-10-13 19:37:33,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:33,570 INFO L225 Difference]: With dead ends: 203 [2019-10-13 19:37:33,570 INFO L226 Difference]: Without dead ends: 125 [2019-10-13 19:37:33,571 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:37:33,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-10-13 19:37:33,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 102. [2019-10-13 19:37:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-13 19:37:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2019-10-13 19:37:33,600 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 57 [2019-10-13 19:37:33,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:33,601 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2019-10-13 19:37:33,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:37:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2019-10-13 19:37:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-13 19:37:33,604 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:33,604 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:33,604 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:33,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:33,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1834066652, now seen corresponding path program 1 times [2019-10-13 19:37:33,605 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:33,606 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118612335] [2019-10-13 19:37:33,606 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:33,606 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:33,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:33,984 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:34,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118612335] [2019-10-13 19:37:34,108 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:34,109 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:37:34,109 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367230943] [2019-10-13 19:37:34,110 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:37:34,110 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:34,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:37:34,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:37:34,111 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand 6 states. [2019-10-13 19:37:34,531 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:35,797 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:36,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:36,310 INFO L93 Difference]: Finished difference Result 298 states and 368 transitions. [2019-10-13 19:37:36,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:37:36,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2019-10-13 19:37:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:36,317 INFO L225 Difference]: With dead ends: 298 [2019-10-13 19:37:36,317 INFO L226 Difference]: Without dead ends: 220 [2019-10-13 19:37:36,318 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:37:36,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2019-10-13 19:37:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 179. [2019-10-13 19:37:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2019-10-13 19:37:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 206 transitions. [2019-10-13 19:37:36,358 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 206 transitions. Word has length 65 [2019-10-13 19:37:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:36,359 INFO L462 AbstractCegarLoop]: Abstraction has 179 states and 206 transitions. [2019-10-13 19:37:36,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:37:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 206 transitions. [2019-10-13 19:37:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-13 19:37:36,361 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:36,361 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:36,361 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:36,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:36,362 INFO L82 PathProgramCache]: Analyzing trace with hash 476831218, now seen corresponding path program 1 times [2019-10-13 19:37:36,362 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:36,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970612494] [2019-10-13 19:37:36,362 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:36,362 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:36,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:36,650 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:36,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970612494] [2019-10-13 19:37:36,733 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:36,733 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:36,733 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834217953] [2019-10-13 19:37:36,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:36,734 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:36,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:36,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:36,735 INFO L87 Difference]: Start difference. First operand 179 states and 206 transitions. Second operand 8 states. [2019-10-13 19:37:37,196 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:38,441 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:38,769 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:39,054 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:39,310 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:39,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:39,925 INFO L93 Difference]: Finished difference Result 486 states and 614 transitions. [2019-10-13 19:37:39,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:37:39,929 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2019-10-13 19:37:39,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:39,932 INFO L225 Difference]: With dead ends: 486 [2019-10-13 19:37:39,932 INFO L226 Difference]: Without dead ends: 331 [2019-10-13 19:37:39,934 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:37:39,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2019-10-13 19:37:40,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 291. [2019-10-13 19:37:40,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2019-10-13 19:37:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 341 transitions. [2019-10-13 19:37:40,014 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 341 transitions. Word has length 79 [2019-10-13 19:37:40,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:40,015 INFO L462 AbstractCegarLoop]: Abstraction has 291 states and 341 transitions. [2019-10-13 19:37:40,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:40,015 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 341 transitions. [2019-10-13 19:37:40,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-13 19:37:40,017 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:40,017 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:40,018 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:40,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:40,018 INFO L82 PathProgramCache]: Analyzing trace with hash 786989304, now seen corresponding path program 1 times [2019-10-13 19:37:40,018 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:40,018 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87517783] [2019-10-13 19:37:40,019 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:40,019 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:40,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,330 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:40,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87517783] [2019-10-13 19:37:40,419 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:40,419 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:37:40,419 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021693492] [2019-10-13 19:37:40,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:37:40,420 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:40,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:37:40,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:37:40,421 INFO L87 Difference]: Start difference. First operand 291 states and 341 transitions. Second operand 10 states. [2019-10-13 19:37:40,943 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:42,273 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:42,592 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:42,878 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:43,131 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:43,532 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:44,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:44,379 INFO L93 Difference]: Finished difference Result 651 states and 830 transitions. [2019-10-13 19:37:44,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:37:44,380 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2019-10-13 19:37:44,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:44,386 INFO L225 Difference]: With dead ends: 651 [2019-10-13 19:37:44,386 INFO L226 Difference]: Without dead ends: 485 [2019-10-13 19:37:44,387 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:37:44,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2019-10-13 19:37:44,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 417. [2019-10-13 19:37:44,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2019-10-13 19:37:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 496 transitions. [2019-10-13 19:37:44,477 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 496 transitions. Word has length 83 [2019-10-13 19:37:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:44,477 INFO L462 AbstractCegarLoop]: Abstraction has 417 states and 496 transitions. [2019-10-13 19:37:44,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:37:44,478 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 496 transitions. [2019-10-13 19:37:44,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-13 19:37:44,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:44,480 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:44,480 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:44,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:44,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1116755065, now seen corresponding path program 1 times [2019-10-13 19:37:44,481 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:44,481 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045748551] [2019-10-13 19:37:44,481 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:44,481 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:44,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,824 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:44,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045748551] [2019-10-13 19:37:44,941 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:44,941 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:44,941 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287749058] [2019-10-13 19:37:44,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:44,942 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:44,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:44,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:44,943 INFO L87 Difference]: Start difference. First operand 417 states and 496 transitions. Second operand 8 states. [2019-10-13 19:37:45,964 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:46,202 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:46,490 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:47,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:47,400 INFO L93 Difference]: Finished difference Result 769 states and 955 transitions. [2019-10-13 19:37:47,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:37:47,400 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2019-10-13 19:37:47,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:47,404 INFO L225 Difference]: With dead ends: 769 [2019-10-13 19:37:47,404 INFO L226 Difference]: Without dead ends: 473 [2019-10-13 19:37:47,406 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 [2019-10-13 19:37:47,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2019-10-13 19:37:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 417. [2019-10-13 19:37:47,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2019-10-13 19:37:47,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 495 transitions. [2019-10-13 19:37:47,482 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 495 transitions. Word has length 83 [2019-10-13 19:37:47,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:47,482 INFO L462 AbstractCegarLoop]: Abstraction has 417 states and 495 transitions. [2019-10-13 19:37:47,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:47,482 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 495 transitions. [2019-10-13 19:37:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-13 19:37:47,484 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:47,485 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:47,485 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:47,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:47,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1044368507, now seen corresponding path program 1 times [2019-10-13 19:37:47,486 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:47,486 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499568257] [2019-10-13 19:37:47,486 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:47,486 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:47,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,775 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:47,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499568257] [2019-10-13 19:37:47,930 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:47,930 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:37:47,930 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253045911] [2019-10-13 19:37:47,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:37:47,932 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:47,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:37:47,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:37:47,938 INFO L87 Difference]: Start difference. First operand 417 states and 495 transitions. Second operand 12 states. [2019-10-13 19:37:49,009 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:49,301 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:49,567 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:50,313 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:50,591 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:50,894 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:51,171 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:52,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:52,083 INFO L93 Difference]: Finished difference Result 834 states and 1039 transitions. [2019-10-13 19:37:52,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:37:52,083 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2019-10-13 19:37:52,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:52,087 INFO L225 Difference]: With dead ends: 834 [2019-10-13 19:37:52,087 INFO L226 Difference]: Without dead ends: 441 [2019-10-13 19:37:52,089 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:37:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2019-10-13 19:37:52,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 390. [2019-10-13 19:37:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2019-10-13 19:37:52,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 461 transitions. [2019-10-13 19:37:52,187 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 461 transitions. Word has length 83 [2019-10-13 19:37:52,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:52,188 INFO L462 AbstractCegarLoop]: Abstraction has 390 states and 461 transitions. [2019-10-13 19:37:52,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:37:52,188 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 461 transitions. [2019-10-13 19:37:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-13 19:37:52,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:52,191 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:52,192 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:52,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:52,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1113116411, now seen corresponding path program 1 times [2019-10-13 19:37:52,193 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:52,194 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848570269] [2019-10-13 19:37:52,194 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:52,194 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:52,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,551 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:52,682 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848570269] [2019-10-13 19:37:52,683 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:52,683 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:37:52,683 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95638175] [2019-10-13 19:37:52,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:37:52,684 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:52,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:37:52,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:37:52,684 INFO L87 Difference]: Start difference. First operand 390 states and 461 transitions. Second operand 13 states. [2019-10-13 19:37:53,448 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:53,746 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:54,022 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:55,044 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:55,858 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:56,231 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:56,522 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:57,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:57,005 INFO L93 Difference]: Finished difference Result 771 states and 924 transitions. [2019-10-13 19:37:57,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:37:57,006 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2019-10-13 19:37:57,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:57,007 INFO L225 Difference]: With dead ends: 771 [2019-10-13 19:37:57,007 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:37:57,009 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2019-10-13 19:37:57,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:37:57,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:37:57,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:37:57,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:37:57,010 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 84 [2019-10-13 19:37:57,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:57,011 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:37:57,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 19:37:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:37:57,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:37:57,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:37:57,714 WARN L191 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 221 [2019-10-13 19:37:58,567 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 216 [2019-10-13 19:37:59,126 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 216 [2019-10-13 19:37:59,421 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 212 [2019-10-13 19:37:59,959 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 16 [2019-10-13 19:38:00,110 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 1 [2019-10-13 19:38:00,257 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 20 [2019-10-13 19:38:00,411 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 20 [2019-10-13 19:38:00,568 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 1 [2019-10-13 19:38:00,898 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 21 [2019-10-13 19:38:01,281 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 19 [2019-10-13 19:38:01,502 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:01,677 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2019-10-13 19:38:02,074 WARN L191 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 24 [2019-10-13 19:38:02,552 WARN L191 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 21 [2019-10-13 19:38:02,706 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 1 [2019-10-13 19:38:03,140 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 16 [2019-10-13 19:38:03,311 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2019-10-13 19:38:03,518 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 19 [2019-10-13 19:38:03,826 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 11 [2019-10-13 19:38:04,007 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 22 [2019-10-13 19:38:04,178 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 22 [2019-10-13 19:38:04,351 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1