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_spec2_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:36:28,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:36:28,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:36:28,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:36:28,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:36:28,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:36:28,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:36:28,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:36:28,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:36:28,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:36:28,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:36:28,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:36:28,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:36:28,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:36:28,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:36:28,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:36:28,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:36:28,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:36:28,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:36:28,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:36:28,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:36:28,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:36:28,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:36:28,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:36:28,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:36:28,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:36:28,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:36:28,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:36:28,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:36:28,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:36:28,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:36:28,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:36:28,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:36:28,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:36:28,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:36:28,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:36:28,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:36:28,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:36:28,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:36:28,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:36:28,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:36:28,268 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 19:36:28,299 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:36:28,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:36:28,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:36:28,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:36:28,301 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:36:28,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:36:28,304 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:36:28,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:36:28,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:36:28,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:36:28,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:36:28,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:36:28,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:36:28,306 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:36:28,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:36:28,306 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:36:28,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:36:28,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:36:28,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:36:28,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:36:28,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:36:28,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:36:28,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:36:28,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:36:28,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:36:28,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:36:28,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:36:28,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:36:28,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:36:28,585 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:36:28,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:36:28,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:36:28,602 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:36:28,602 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:36:28,603 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2019-10-13 19:36:28,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556d861de/c8721d64ff234c3a9cf080089bfef1e1/FLAG922542347 [2019-10-13 19:36:29,213 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:36:29,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2019-10-13 19:36:29,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556d861de/c8721d64ff234c3a9cf080089bfef1e1/FLAG922542347 [2019-10-13 19:36:29,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556d861de/c8721d64ff234c3a9cf080089bfef1e1 [2019-10-13 19:36:29,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:36:29,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:36:29,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:36:29,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:36:29,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:36:29,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:29" (1/1) ... [2019-10-13 19:36:29,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4432d2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:29, skipping insertion in model container [2019-10-13 19:36:29,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:29" (1/1) ... [2019-10-13 19:36:29,507 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:36:29,550 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:36:29,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:36:29,938 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:36:30,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:36:30,060 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:36:30,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:30 WrapperNode [2019-10-13 19:36:30,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:36:30,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:36:30,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:36:30,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:36:30,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:30" (1/1) ... [2019-10-13 19:36:30,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:30" (1/1) ... [2019-10-13 19:36:30,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:30" (1/1) ... [2019-10-13 19:36:30,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:30" (1/1) ... [2019-10-13 19:36:30,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:30" (1/1) ... [2019-10-13 19:36:30,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:30" (1/1) ... [2019-10-13 19:36:30,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:30" (1/1) ... [2019-10-13 19:36:30,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:36:30,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:36:30,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:36:30,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:36:30,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:30" (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 19:36:30,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:36:30,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:36:30,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:36:30,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 19:36:30,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 19:36:30,227 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:36:30,227 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:36:30,228 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:36:30,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:36:30,229 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:36:30,229 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:36:30,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:36:30,230 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:36:30,230 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:36:30,231 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:36:30,231 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:36:30,233 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:36:30,233 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:36:30,233 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:36:30,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:36:30,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:36:30,234 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:36:30,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:36:30,234 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:36:30,234 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:36:30,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:36:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:36:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:36:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:36:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:36:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:36:30,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:36:30,236 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:36:30,236 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:36:30,236 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:36:30,236 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:36:30,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:36:30,236 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:36:30,237 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:36:30,237 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:36:30,237 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:36:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:36:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:36:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:36:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:36:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:36:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:36:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 19:36:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 19:36:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:36:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:36:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:36:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:36:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:36:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:36:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:36:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:36:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:36:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:36:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:36:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:36:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:36:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:36:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:36:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:36:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:36:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:36:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:36:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:36:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:36:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:36:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:36:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:36:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:36:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:36:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:36:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:36:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:36:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:36:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:36:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:36:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:36:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:36:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:36:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:36:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:36:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:36:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:36:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:36:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:36:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:36:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:36:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:36:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:36:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:36:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:36:31,308 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:36:31,308 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:36:31,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:31 BoogieIcfgContainer [2019-10-13 19:36:31,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:36:31,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:36:31,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:36:31,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:36:31,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:36:29" (1/3) ... [2019-10-13 19:36:31,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a62ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:31, skipping insertion in model container [2019-10-13 19:36:31,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:30" (2/3) ... [2019-10-13 19:36:31,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a62ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:31, skipping insertion in model container [2019-10-13 19:36:31,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:31" (3/3) ... [2019-10-13 19:36:31,320 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product40.cil.c [2019-10-13 19:36:31,329 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:36:31,338 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:36:31,349 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:36:31,372 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:36:31,373 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:36:31,373 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:36:31,373 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:36:31,373 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:36:31,374 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:36:31,374 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:36:31,374 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:36:31,403 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2019-10-13 19:36:31,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:36:31,412 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:31,413 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:36:31,415 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:31,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1292486909, now seen corresponding path program 1 times [2019-10-13 19:36:31,429 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:31,430 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224281874] [2019-10-13 19:36:31,430 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:31,430 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:31,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:32,110 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:32,209 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 19:36:32,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224281874] [2019-10-13 19:36:32,220 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:32,221 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:36:32,223 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868549579] [2019-10-13 19:36:32,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:36:32,231 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:32,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:36:32,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:36:32,248 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2019-10-13 19:36:33,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:33,347 INFO L93 Difference]: Finished difference Result 311 states and 408 transitions. [2019-10-13 19:36:33,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:36:33,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-13 19:36:33,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:33,366 INFO L225 Difference]: With dead ends: 311 [2019-10-13 19:36:33,366 INFO L226 Difference]: Without dead ends: 174 [2019-10-13 19:36:33,373 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:36:33,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-10-13 19:36:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 138. [2019-10-13 19:36:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-10-13 19:36:33,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2019-10-13 19:36:33,461 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 51 [2019-10-13 19:36:33,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:33,462 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2019-10-13 19:36:33,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:36:33,462 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2019-10-13 19:36:33,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:36:33,466 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:33,466 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 19:36:33,466 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:33,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:33,467 INFO L82 PathProgramCache]: Analyzing trace with hash -11798802, now seen corresponding path program 1 times [2019-10-13 19:36:33,467 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:33,467 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672264487] [2019-10-13 19:36:33,467 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:33,468 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:33,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:33,834 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:33,922 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 19:36:33,923 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672264487] [2019-10-13 19:36:33,923 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:33,924 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:36:33,924 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520385588] [2019-10-13 19:36:33,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:36:33,933 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:33,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:36:33,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:36:33,933 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand 5 states. [2019-10-13 19:36:34,459 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:36:35,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:35,453 INFO L93 Difference]: Finished difference Result 246 states and 307 transitions. [2019-10-13 19:36:35,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:36:35,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-13 19:36:35,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:35,457 INFO L225 Difference]: With dead ends: 246 [2019-10-13 19:36:35,457 INFO L226 Difference]: Without dead ends: 164 [2019-10-13 19:36:35,459 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:36:35,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-13 19:36:35,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 129. [2019-10-13 19:36:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-13 19:36:35,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2019-10-13 19:36:35,497 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 52 [2019-10-13 19:36:35,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:35,497 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2019-10-13 19:36:35,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:36:35,497 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2019-10-13 19:36:35,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:36:35,500 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:35,500 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 19:36:35,500 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:35,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:35,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1490469892, now seen corresponding path program 1 times [2019-10-13 19:36:35,501 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:35,501 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792579991] [2019-10-13 19:36:35,501 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:35,501 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:35,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:35,830 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:35,969 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 19:36:35,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792579991] [2019-10-13 19:36:35,970 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:35,970 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:36:35,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243060208] [2019-10-13 19:36:35,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:36:35,971 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:35,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:36:35,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:36:35,972 INFO L87 Difference]: Start difference. First operand 129 states and 151 transitions. Second operand 9 states. [2019-10-13 19:36:36,437 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:36,800 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:36:37,074 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:37,331 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:38,213 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:36:40,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:40,278 INFO L93 Difference]: Finished difference Result 439 states and 556 transitions. [2019-10-13 19:36:40,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:36:40,279 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-10-13 19:36:40,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:40,284 INFO L225 Difference]: With dead ends: 439 [2019-10-13 19:36:40,285 INFO L226 Difference]: Without dead ends: 338 [2019-10-13 19:36:40,286 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:36:40,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2019-10-13 19:36:40,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 269. [2019-10-13 19:36:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2019-10-13 19:36:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 328 transitions. [2019-10-13 19:36:40,354 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 328 transitions. Word has length 57 [2019-10-13 19:36:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:40,354 INFO L462 AbstractCegarLoop]: Abstraction has 269 states and 328 transitions. [2019-10-13 19:36:40,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:36:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 328 transitions. [2019-10-13 19:36:40,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-13 19:36:40,357 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:40,357 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] [2019-10-13 19:36:40,358 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:40,358 INFO L82 PathProgramCache]: Analyzing trace with hash -512554003, now seen corresponding path program 1 times [2019-10-13 19:36:40,358 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:40,358 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911466560] [2019-10-13 19:36:40,359 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:40,359 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:40,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,649 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,738 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 19:36:40,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911466560] [2019-10-13 19:36:40,738 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:40,739 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:36:40,739 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802917918] [2019-10-13 19:36:40,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:36:40,739 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:40,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:36:40,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:36:40,740 INFO L87 Difference]: Start difference. First operand 269 states and 328 transitions. Second operand 9 states. [2019-10-13 19:36:41,277 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:42,424 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:42,855 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:43,112 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:43,429 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:44,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:44,999 INFO L93 Difference]: Finished difference Result 864 states and 1152 transitions. [2019-10-13 19:36:45,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 19:36:45,000 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-10-13 19:36:45,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:45,006 INFO L225 Difference]: With dead ends: 864 [2019-10-13 19:36:45,006 INFO L226 Difference]: Without dead ends: 623 [2019-10-13 19:36:45,008 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:36:45,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-13 19:36:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 486. [2019-10-13 19:36:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2019-10-13 19:36:45,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 596 transitions. [2019-10-13 19:36:45,149 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 596 transitions. Word has length 62 [2019-10-13 19:36:45,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:45,149 INFO L462 AbstractCegarLoop]: Abstraction has 486 states and 596 transitions. [2019-10-13 19:36:45,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:36:45,149 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 596 transitions. [2019-10-13 19:36:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-13 19:36:45,153 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:45,153 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] [2019-10-13 19:36:45,154 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:45,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:45,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1361940215, now seen corresponding path program 1 times [2019-10-13 19:36:45,154 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:45,155 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077494768] [2019-10-13 19:36:45,155 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:45,155 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:45,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:45,438 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:45,552 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 19:36:45,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077494768] [2019-10-13 19:36:45,552 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:45,552 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:36:45,553 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190800150] [2019-10-13 19:36:45,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:36:45,553 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:45,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:36:45,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:36:45,554 INFO L87 Difference]: Start difference. First operand 486 states and 596 transitions. Second operand 10 states. [2019-10-13 19:36:46,272 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:47,362 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:47,672 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:47,953 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:48,617 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:49,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:49,968 INFO L93 Difference]: Finished difference Result 1373 states and 1890 transitions. [2019-10-13 19:36:49,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 19:36:49,968 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-10-13 19:36:49,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:49,978 INFO L225 Difference]: With dead ends: 1373 [2019-10-13 19:36:49,978 INFO L226 Difference]: Without dead ends: 915 [2019-10-13 19:36:49,980 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-10-13 19:36:49,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2019-10-13 19:36:50,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 709. [2019-10-13 19:36:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2019-10-13 19:36:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 863 transitions. [2019-10-13 19:36:50,179 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 863 transitions. Word has length 66 [2019-10-13 19:36:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:50,180 INFO L462 AbstractCegarLoop]: Abstraction has 709 states and 863 transitions. [2019-10-13 19:36:50,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:36:50,181 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 863 transitions. [2019-10-13 19:36:50,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:36:50,184 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:50,184 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, 1, 1, 1, 1, 1] [2019-10-13 19:36:50,185 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:50,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:50,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1572074791, now seen corresponding path program 1 times [2019-10-13 19:36:50,185 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:50,186 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730545903] [2019-10-13 19:36:50,186 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:50,186 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:50,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,458 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,659 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 19:36:50,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730545903] [2019-10-13 19:36:50,660 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:50,661 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:36:50,661 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172192738] [2019-10-13 19:36:50,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:36:50,662 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:50,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:36:50,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:36:50,663 INFO L87 Difference]: Start difference. First operand 709 states and 863 transitions. Second operand 10 states. [2019-10-13 19:36:51,085 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:52,265 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:52,548 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:36:52,842 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:53,130 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:54,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:54,891 INFO L93 Difference]: Finished difference Result 2413 states and 3450 transitions. [2019-10-13 19:36:54,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:36:54,892 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-10-13 19:36:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:54,904 INFO L225 Difference]: With dead ends: 2413 [2019-10-13 19:36:54,904 INFO L226 Difference]: Without dead ends: 1732 [2019-10-13 19:36:54,908 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2019-10-13 19:36:54,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2019-10-13 19:36:55,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1279. [2019-10-13 19:36:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2019-10-13 19:36:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1554 transitions. [2019-10-13 19:36:55,191 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1554 transitions. Word has length 89 [2019-10-13 19:36:55,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:55,191 INFO L462 AbstractCegarLoop]: Abstraction has 1279 states and 1554 transitions. [2019-10-13 19:36:55,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:36:55,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1554 transitions. [2019-10-13 19:36:55,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:36:55,196 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:55,197 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, 1, 1, 1, 1, 1] [2019-10-13 19:36:55,197 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:55,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:55,197 INFO L82 PathProgramCache]: Analyzing trace with hash -153406106, now seen corresponding path program 1 times [2019-10-13 19:36:55,198 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:55,198 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991259882] [2019-10-13 19:36:55,198 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:55,198 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:55,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,468 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,603 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 19:36:55,603 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991259882] [2019-10-13 19:36:55,604 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:55,604 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:36:55,605 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688719878] [2019-10-13 19:36:55,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:36:55,605 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:55,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:36:55,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:36:55,606 INFO L87 Difference]: Start difference. First operand 1279 states and 1554 transitions. Second operand 10 states. [2019-10-13 19:36:56,848 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:57,119 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:36:57,405 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:36:57,667 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:36:59,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:59,020 INFO L93 Difference]: Finished difference Result 2983 states and 3988 transitions. [2019-10-13 19:36:59,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:36:59,021 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-10-13 19:36:59,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:59,042 INFO L225 Difference]: With dead ends: 2983 [2019-10-13 19:36:59,042 INFO L226 Difference]: Without dead ends: 1732 [2019-10-13 19:36:59,049 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:36:59,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2019-10-13 19:36:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1319. [2019-10-13 19:36:59,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2019-10-13 19:36:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1594 transitions. [2019-10-13 19:36:59,374 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1594 transitions. Word has length 89 [2019-10-13 19:36:59,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:59,375 INFO L462 AbstractCegarLoop]: Abstraction has 1319 states and 1594 transitions. [2019-10-13 19:36:59,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:36:59,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1594 transitions. [2019-10-13 19:36:59,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:36:59,379 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:59,379 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, 1, 1, 1, 1, 1] [2019-10-13 19:36:59,380 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:59,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:59,380 INFO L82 PathProgramCache]: Analyzing trace with hash 548193768, now seen corresponding path program 1 times [2019-10-13 19:36:59,380 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:59,381 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518692703] [2019-10-13 19:36:59,381 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:59,381 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:59,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,708 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:59,877 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 19:36:59,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518692703] [2019-10-13 19:36:59,885 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:59,885 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:36:59,885 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532468590] [2019-10-13 19:36:59,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:36:59,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:59,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:36:59,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:36:59,887 INFO L87 Difference]: Start difference. First operand 1319 states and 1594 transitions. Second operand 12 states. [2019-10-13 19:37:00,498 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:00,758 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:01,002 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:01,909 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:02,204 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:02,459 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:03,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:03,568 INFO L93 Difference]: Finished difference Result 2667 states and 3530 transitions. [2019-10-13 19:37:03,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:37:03,569 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2019-10-13 19:37:03,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:03,579 INFO L225 Difference]: With dead ends: 2667 [2019-10-13 19:37:03,579 INFO L226 Difference]: Without dead ends: 1376 [2019-10-13 19:37:03,584 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:37:03,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2019-10-13 19:37:03,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1087. [2019-10-13 19:37:03,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2019-10-13 19:37:03,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1282 transitions. [2019-10-13 19:37:03,824 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1282 transitions. Word has length 89 [2019-10-13 19:37:03,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:03,824 INFO L462 AbstractCegarLoop]: Abstraction has 1087 states and 1282 transitions. [2019-10-13 19:37:03,825 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:37:03,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1282 transitions. [2019-10-13 19:37:03,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 19:37:03,827 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:03,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:03,828 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:03,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:03,828 INFO L82 PathProgramCache]: Analyzing trace with hash 81932175, now seen corresponding path program 1 times [2019-10-13 19:37:03,829 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:03,829 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661946233] [2019-10-13 19:37:03,829 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:03,829 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:03,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,090 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:04,179 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 19:37:04,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661946233] [2019-10-13 19:37:04,180 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:04,180 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:04,180 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117284059] [2019-10-13 19:37:04,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:04,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:04,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:04,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:04,181 INFO L87 Difference]: Start difference. First operand 1087 states and 1282 transitions. Second operand 8 states. [2019-10-13 19:37:04,545 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:06,903 INFO L93 Difference]: Finished difference Result 2185 states and 2908 transitions. [2019-10-13 19:37:06,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-13 19:37:06,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-10-13 19:37:06,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:06,917 INFO L225 Difference]: With dead ends: 2185 [2019-10-13 19:37:06,917 INFO L226 Difference]: Without dead ends: 2182 [2019-10-13 19:37:06,919 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2019-10-13 19:37:06,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2019-10-13 19:37:07,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 1684. [2019-10-13 19:37:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2019-10-13 19:37:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2013 transitions. [2019-10-13 19:37:07,315 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2013 transitions. Word has length 93 [2019-10-13 19:37:07,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:07,318 INFO L462 AbstractCegarLoop]: Abstraction has 1684 states and 2013 transitions. [2019-10-13 19:37:07,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:07,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2013 transitions. [2019-10-13 19:37:07,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 19:37:07,327 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:07,327 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:07,327 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:07,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:07,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1018775150, now seen corresponding path program 1 times [2019-10-13 19:37:07,328 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:07,328 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350764734] [2019-10-13 19:37:07,328 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:07,328 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:07,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,618 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:37:07,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350764734] [2019-10-13 19:37:07,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055002163] [2019-10-13 19:37:07,803 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