java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:42:16,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:42:16,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:42:16,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:42:16,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:42:16,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:42:16,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:42:16,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:42:16,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:42:16,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:42:16,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:42:16,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:42:16,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:42:16,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:42:16,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:42:16,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:42:16,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:42:16,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:42:16,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:42:16,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:42:16,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:42:16,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:42:16,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:42:16,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:42:16,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:42:16,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:42:16,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:42:16,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:42:16,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:42:16,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:42:16,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:42:16,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:42:16,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:42:16,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:42:16,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:42:16,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:42:16,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:42:16,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:42:16,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:42:16,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:42:16,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:42:16,197 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 19:42:16,224 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:42:16,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:42:16,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:42:16,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:42:16,227 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:42:16,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:42:16,228 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:42:16,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:42:16,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:42:16,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:42:16,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:42:16,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:42:16,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:42:16,230 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:42:16,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:42:16,231 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:42:16,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:42:16,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:42:16,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:42:16,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:42:16,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:42:16,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:42:16,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:42:16,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:42:16,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:42:16,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:42:16,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:42:16,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:42:16,234 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:42:16,565 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:42:16,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:42:16,586 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:42:16,588 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:42:16,588 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:42:16,589 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c [2019-10-13 19:42:16,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/647f7692a/1e506095d84c45bf99ac4a206c0bc7dc/FLAG9f81cec64 [2019-10-13 19:42:17,212 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:42:17,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c [2019-10-13 19:42:17,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/647f7692a/1e506095d84c45bf99ac4a206c0bc7dc/FLAG9f81cec64 [2019-10-13 19:42:17,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/647f7692a/1e506095d84c45bf99ac4a206c0bc7dc [2019-10-13 19:42:17,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:42:17,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:42:17,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:42:17,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:42:17,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:42:17,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:42:17" (1/1) ... [2019-10-13 19:42:17,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a48b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:17, skipping insertion in model container [2019-10-13 19:42:17,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:42:17" (1/1) ... [2019-10-13 19:42:17,548 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:42:17,611 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:42:18,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:42:18,111 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:42:18,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:42:18,241 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:42:18,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:18 WrapperNode [2019-10-13 19:42:18,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:42:18,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:42:18,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:42:18,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:42:18,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:18" (1/1) ... [2019-10-13 19:42:18,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:18" (1/1) ... [2019-10-13 19:42:18,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:18" (1/1) ... [2019-10-13 19:42:18,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:18" (1/1) ... [2019-10-13 19:42:18,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:18" (1/1) ... [2019-10-13 19:42:18,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:18" (1/1) ... [2019-10-13 19:42:18,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:18" (1/1) ... [2019-10-13 19:42:18,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:42:18,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:42:18,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:42:18,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:42:18,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:18" (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 19:42:18,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:42:18,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:42:18,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:42:18,409 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:42:18,409 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:42:18,410 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:42:18,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:42:18,410 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:42:18,411 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:42:18,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:42:18,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:42:18,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 19:42:18,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 19:42:18,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 19:42:18,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:42:18,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:42:18,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:42:18,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:42:18,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:42:18,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:42:18,417 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:42:18,417 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:42:18,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:42:18,418 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:42:18,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:42:18,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:42:18,418 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:42:18,418 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:42:18,419 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:42:18,419 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:42:18,419 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:42:18,419 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:42:18,419 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:42:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:42:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:42:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:42:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:42:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:42:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:42:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:42:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:42:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:42:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:42:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:42:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:42:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:42:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:42:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:42:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:42:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:42:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:42:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:42:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:42:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:42:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:42:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:42:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:42:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:42:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 19:42:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 19:42:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 19:42:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:42:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:42:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:42:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:42:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:42:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:42:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:42:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:42:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:42:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:42:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:42:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:42:18,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:42:18,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:42:18,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:42:18,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:42:18,428 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:42:18,428 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:42:18,429 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:42:18,429 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:42:18,429 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:42:18,429 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:42:18,429 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:42:18,429 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:42:18,430 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:42:18,430 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:42:18,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:42:18,430 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:42:18,430 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:42:18,430 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:42:18,430 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:42:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:42:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:42:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:42:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:42:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:42:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:42:18,432 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:42:18,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:42:18,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:42:18,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:42:19,632 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:42:19,633 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:42:19,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:42:19 BoogieIcfgContainer [2019-10-13 19:42:19,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:42:19,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:42:19,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:42:19,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:42:19,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:42:17" (1/3) ... [2019-10-13 19:42:19,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7e0df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:42:19, skipping insertion in model container [2019-10-13 19:42:19,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:18" (2/3) ... [2019-10-13 19:42:19,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7e0df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:42:19, skipping insertion in model container [2019-10-13 19:42:19,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:42:19" (3/3) ... [2019-10-13 19:42:19,645 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product58.cil.c [2019-10-13 19:42:19,657 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:42:19,667 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:42:19,679 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:42:19,720 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:42:19,720 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:42:19,721 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:42:19,721 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:42:19,721 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:42:19,721 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:42:19,722 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:42:19,723 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:42:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2019-10-13 19:42:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-13 19:42:19,767 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:19,768 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:19,770 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:19,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:19,777 INFO L82 PathProgramCache]: Analyzing trace with hash -229262266, now seen corresponding path program 1 times [2019-10-13 19:42:19,787 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:19,787 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705374590] [2019-10-13 19:42:19,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:19,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:19,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,451 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:20,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705374590] [2019-10-13 19:42:20,569 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:20,569 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:42:20,570 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635959716] [2019-10-13 19:42:20,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:42:20,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:20,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:42:20,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:42:20,593 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 4 states. [2019-10-13 19:42:21,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:21,874 INFO L93 Difference]: Finished difference Result 345 states and 435 transitions. [2019-10-13 19:42:21,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:42:21,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-10-13 19:42:21,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:21,904 INFO L225 Difference]: With dead ends: 345 [2019-10-13 19:42:21,904 INFO L226 Difference]: Without dead ends: 189 [2019-10-13 19:42:21,912 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 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 19:42:21,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2019-10-13 19:42:21,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 157. [2019-10-13 19:42:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-13 19:42:22,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2019-10-13 19:42:22,004 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 59 [2019-10-13 19:42:22,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:22,004 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2019-10-13 19:42:22,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:42:22,005 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2019-10-13 19:42:22,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 19:42:22,011 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:22,012 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:22,012 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:22,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:22,013 INFO L82 PathProgramCache]: Analyzing trace with hash -751857026, now seen corresponding path program 1 times [2019-10-13 19:42:22,014 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:22,014 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816815939] [2019-10-13 19:42:22,014 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:22,014 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:22,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,396 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:22,448 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816815939] [2019-10-13 19:42:22,448 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:22,449 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:42:22,449 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142815565] [2019-10-13 19:42:22,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:42:22,451 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:22,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:42:22,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:42:22,452 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand 5 states. [2019-10-13 19:42:22,996 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:24,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:24,049 INFO L93 Difference]: Finished difference Result 286 states and 343 transitions. [2019-10-13 19:42:24,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:42:24,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-10-13 19:42:24,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:24,053 INFO L225 Difference]: With dead ends: 286 [2019-10-13 19:42:24,054 INFO L226 Difference]: Without dead ends: 179 [2019-10-13 19:42:24,056 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 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 19:42:24,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2019-10-13 19:42:24,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 148. [2019-10-13 19:42:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-13 19:42:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 170 transitions. [2019-10-13 19:42:24,098 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 170 transitions. Word has length 60 [2019-10-13 19:42:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:24,099 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 170 transitions. [2019-10-13 19:42:24,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:42:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 170 transitions. [2019-10-13 19:42:24,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-13 19:42:24,101 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:24,101 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:24,102 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:24,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:24,102 INFO L82 PathProgramCache]: Analyzing trace with hash -8533593, now seen corresponding path program 1 times [2019-10-13 19:42:24,102 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:24,103 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120431386] [2019-10-13 19:42:24,103 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:24,103 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:24,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:24,552 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:24,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120431386] [2019-10-13 19:42:24,689 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:24,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:42:24,689 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143246410] [2019-10-13 19:42:24,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:42:24,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:24,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:42:24,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:42:24,691 INFO L87 Difference]: Start difference. First operand 148 states and 170 transitions. Second operand 9 states. [2019-10-13 19:42:25,165 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:25,536 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:42:25,826 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:26,091 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:27,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:27,636 INFO L93 Difference]: Finished difference Result 299 states and 362 transitions. [2019-10-13 19:42:27,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:42:27,640 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2019-10-13 19:42:27,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:27,642 INFO L225 Difference]: With dead ends: 299 [2019-10-13 19:42:27,642 INFO L226 Difference]: Without dead ends: 179 [2019-10-13 19:42:27,644 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:42:27,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2019-10-13 19:42:27,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 148. [2019-10-13 19:42:27,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-13 19:42:27,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 169 transitions. [2019-10-13 19:42:27,709 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 169 transitions. Word has length 65 [2019-10-13 19:42:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:27,712 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 169 transitions. [2019-10-13 19:42:27,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:42:27,712 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 169 transitions. [2019-10-13 19:42:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 19:42:27,722 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:27,723 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:27,723 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:27,723 INFO L82 PathProgramCache]: Analyzing trace with hash -2138732759, now seen corresponding path program 1 times [2019-10-13 19:42:27,724 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:27,724 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509228236] [2019-10-13 19:42:27,724 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:27,724 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:27,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,094 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:28,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509228236] [2019-10-13 19:42:28,186 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:28,187 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:42:28,187 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447130294] [2019-10-13 19:42:28,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:42:28,188 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:28,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:42:28,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:42:28,188 INFO L87 Difference]: Start difference. First operand 148 states and 169 transitions. Second operand 7 states. [2019-10-13 19:42:28,584 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:30,186 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:30,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:30,755 INFO L93 Difference]: Finished difference Result 403 states and 496 transitions. [2019-10-13 19:42:30,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:42:30,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2019-10-13 19:42:30,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:30,760 INFO L225 Difference]: With dead ends: 403 [2019-10-13 19:42:30,760 INFO L226 Difference]: Without dead ends: 283 [2019-10-13 19:42:30,762 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:42:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2019-10-13 19:42:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 237. [2019-10-13 19:42:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2019-10-13 19:42:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 270 transitions. [2019-10-13 19:42:30,834 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 270 transitions. Word has length 78 [2019-10-13 19:42:30,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:30,835 INFO L462 AbstractCegarLoop]: Abstraction has 237 states and 270 transitions. [2019-10-13 19:42:30,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:42:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 270 transitions. [2019-10-13 19:42:30,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 19:42:30,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:30,836 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:30,836 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:30,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:30,837 INFO L82 PathProgramCache]: Analyzing trace with hash 2116914143, now seen corresponding path program 1 times [2019-10-13 19:42:30,837 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:30,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33382572] [2019-10-13 19:42:30,837 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:30,837 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:30,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,146 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:42:31,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33382572] [2019-10-13 19:42:31,273 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:31,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:42:31,273 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091499459] [2019-10-13 19:42:31,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:42:31,274 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:31,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:42:31,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:42:31,275 INFO L87 Difference]: Start difference. First operand 237 states and 270 transitions. Second operand 9 states. [2019-10-13 19:42:31,692 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:32,414 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:33,398 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:33,694 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:34,224 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:34,481 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:35,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:35,084 INFO L93 Difference]: Finished difference Result 491 states and 592 transitions. [2019-10-13 19:42:35,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:42:35,086 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2019-10-13 19:42:35,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:35,090 INFO L225 Difference]: With dead ends: 491 [2019-10-13 19:42:35,090 INFO L226 Difference]: Without dead ends: 282 [2019-10-13 19:42:35,091 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:42:35,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2019-10-13 19:42:35,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 236. [2019-10-13 19:42:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-10-13 19:42:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 267 transitions. [2019-10-13 19:42:35,139 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 267 transitions. Word has length 92 [2019-10-13 19:42:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:35,140 INFO L462 AbstractCegarLoop]: Abstraction has 236 states and 267 transitions. [2019-10-13 19:42:35,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:42:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 267 transitions. [2019-10-13 19:42:35,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 19:42:35,141 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:35,142 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:35,142 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:35,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:35,142 INFO L82 PathProgramCache]: Analyzing trace with hash 660673946, now seen corresponding path program 1 times [2019-10-13 19:42:35,143 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:35,143 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255656319] [2019-10-13 19:42:35,143 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:35,143 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:35,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,425 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:35,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255656319] [2019-10-13 19:42:35,619 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:35,619 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:42:35,619 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341963197] [2019-10-13 19:42:35,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:42:35,620 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:35,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:42:35,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:42:35,620 INFO L87 Difference]: Start difference. First operand 236 states and 267 transitions. Second operand 9 states. [2019-10-13 19:42:36,788 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:37,076 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:42:37,359 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:37,655 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:38,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:38,626 INFO L93 Difference]: Finished difference Result 491 states and 595 transitions. [2019-10-13 19:42:38,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:42:38,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2019-10-13 19:42:38,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:38,629 INFO L225 Difference]: With dead ends: 491 [2019-10-13 19:42:38,629 INFO L226 Difference]: Without dead ends: 283 [2019-10-13 19:42:38,630 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:42:38,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2019-10-13 19:42:38,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 241. [2019-10-13 19:42:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2019-10-13 19:42:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 272 transitions. [2019-10-13 19:42:38,670 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 272 transitions. Word has length 108 [2019-10-13 19:42:38,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:38,670 INFO L462 AbstractCegarLoop]: Abstraction has 241 states and 272 transitions. [2019-10-13 19:42:38,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:42:38,671 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 272 transitions. [2019-10-13 19:42:38,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 19:42:38,672 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:38,672 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:38,672 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:38,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:38,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1706020648, now seen corresponding path program 1 times [2019-10-13 19:42:38,673 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:38,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489975668] [2019-10-13 19:42:38,673 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:38,673 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:38,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:38,953 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:39,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:39,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489975668] [2019-10-13 19:42:39,172 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:39,172 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:42:39,172 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670674483] [2019-10-13 19:42:39,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:42:39,174 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:39,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:42:39,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:42:39,175 INFO L87 Difference]: Start difference. First operand 241 states and 272 transitions. Second operand 11 states. [2019-10-13 19:42:39,905 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:40,197 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:40,450 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:41,268 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:41,564 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:41,850 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:42,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:42,852 INFO L93 Difference]: Finished difference Result 501 states and 606 transitions. [2019-10-13 19:42:42,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:42:42,852 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2019-10-13 19:42:42,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:42,854 INFO L225 Difference]: With dead ends: 501 [2019-10-13 19:42:42,855 INFO L226 Difference]: Without dead ends: 288 [2019-10-13 19:42:42,856 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:42:42,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2019-10-13 19:42:42,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 245. [2019-10-13 19:42:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2019-10-13 19:42:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 276 transitions. [2019-10-13 19:42:42,900 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 276 transitions. Word has length 108 [2019-10-13 19:42:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:42,900 INFO L462 AbstractCegarLoop]: Abstraction has 245 states and 276 transitions. [2019-10-13 19:42:42,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:42:42,901 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 276 transitions. [2019-10-13 19:42:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 19:42:42,902 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:42,902 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:42,903 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:42,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:42,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1946560777, now seen corresponding path program 1 times [2019-10-13 19:42:42,903 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:42,904 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617980710] [2019-10-13 19:42:42,904 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:42,904 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:42,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,205 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:43,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617980710] [2019-10-13 19:42:43,436 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:43,436 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:42:43,437 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077609108] [2019-10-13 19:42:43,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:42:43,438 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:43,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:42:43,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:42:43,439 INFO L87 Difference]: Start difference. First operand 245 states and 276 transitions. Second operand 7 states. [2019-10-13 19:42:43,906 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:44,498 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:46,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:46,586 INFO L93 Difference]: Finished difference Result 683 states and 844 transitions. [2019-10-13 19:42:46,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:42:46,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2019-10-13 19:42:46,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:46,590 INFO L225 Difference]: With dead ends: 683 [2019-10-13 19:42:46,590 INFO L226 Difference]: Without dead ends: 466 [2019-10-13 19:42:46,591 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:42:46,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2019-10-13 19:42:46,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 424. [2019-10-13 19:42:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2019-10-13 19:42:46,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 492 transitions. [2019-10-13 19:42:46,659 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 492 transitions. Word has length 108 [2019-10-13 19:42:46,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:46,660 INFO L462 AbstractCegarLoop]: Abstraction has 424 states and 492 transitions. [2019-10-13 19:42:46,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:42:46,660 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 492 transitions. [2019-10-13 19:42:46,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 19:42:46,662 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:46,662 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:46,662 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:46,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:46,662 INFO L82 PathProgramCache]: Analyzing trace with hash 79738257, now seen corresponding path program 1 times [2019-10-13 19:42:46,663 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:46,663 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902151037] [2019-10-13 19:42:46,663 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:46,663 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:46,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,011 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:47,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:47,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902151037] [2019-10-13 19:42:47,183 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:47,183 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:42:47,183 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327225355] [2019-10-13 19:42:47,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:42:47,184 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:47,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:42:47,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:42:47,185 INFO L87 Difference]: Start difference. First operand 424 states and 492 transitions. Second operand 12 states. [2019-10-13 19:42:47,941 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:48,682 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:49,797 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:50,135 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:50,437 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-13 19:42:50,738 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:51,035 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:52,389 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:52,715 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:53,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:53,581 INFO L93 Difference]: Finished difference Result 1180 states and 1453 transitions. [2019-10-13 19:42:53,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-10-13 19:42:53,584 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2019-10-13 19:42:53,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:53,592 INFO L225 Difference]: With dead ends: 1180 [2019-10-13 19:42:53,592 INFO L226 Difference]: Without dead ends: 858 [2019-10-13 19:42:53,595 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 19:42:53,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2019-10-13 19:42:53,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 736. [2019-10-13 19:42:53,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2019-10-13 19:42:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 846 transitions. [2019-10-13 19:42:53,751 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 846 transitions. Word has length 112 [2019-10-13 19:42:53,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:53,752 INFO L462 AbstractCegarLoop]: Abstraction has 736 states and 846 transitions. [2019-10-13 19:42:53,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:42:53,752 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 846 transitions. [2019-10-13 19:42:53,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 19:42:53,754 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:53,755 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:53,755 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:53,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:53,758 INFO L82 PathProgramCache]: Analyzing trace with hash -992810877, now seen corresponding path program 1 times [2019-10-13 19:42:53,758 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:53,758 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579816557] [2019-10-13 19:42:53,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:53,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:53,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,159 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 19:42:54,692 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579816557] [2019-10-13 19:42:54,693 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085921148] [2019-10-13 19:42:54,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:42:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:54,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 19:42:54,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:42:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:42:55,130 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:42:55,130 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 20 [2019-10-13 19:42:55,131 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757126689] [2019-10-13 19:42:55,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 19:42:55,132 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:55,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 19:42:55,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:42:55,132 INFO L87 Difference]: Start difference. First operand 736 states and 846 transitions. Second operand 20 states.