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_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:07:21,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:07:21,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:07:21,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:07:21,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:07:21,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:07:21,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:07:21,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:07:21,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:07:21,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:07:21,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:07:21,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:07:21,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:07:21,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:07:21,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:07:21,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:07:21,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:07:21,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:07:21,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:07:21,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:07:21,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:07:21,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:07:21,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:07:21,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:07:21,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:07:21,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:07:21,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:07:21,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:07:21,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:07:21,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:07:21,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:07:21,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:07:21,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:07:21,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:07:21,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:07:21,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:07:21,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:07:21,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:07:21,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:07:21,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:07:21,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:07:21,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 13:07:21,472 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:07:21,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:07:21,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:07:21,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:07:21,474 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:07:21,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:07:21,475 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:07:21,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:07:21,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:07:21,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:07:21,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:07:21,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:07:21,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:07:21,476 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:07:21,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:07:21,477 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:07:21,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:07:21,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:07:21,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:07:21,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:07:21,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:07:21,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:07:21,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:07:21,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:07:21,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:07:21,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:07:21,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:07:21,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:07:21,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:07:21,524 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:07:21,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:07:21,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:07:21,549 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:07:21,552 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:07:21,553 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product38.cil.c [2019-09-20 13:07:21,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f3f890d4/ffd9a542b0674b6298081d887be3a798/FLAGada9c41e2 [2019-09-20 13:07:22,108 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:07:22,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product38.cil.c [2019-09-20 13:07:22,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f3f890d4/ffd9a542b0674b6298081d887be3a798/FLAGada9c41e2 [2019-09-20 13:07:22,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f3f890d4/ffd9a542b0674b6298081d887be3a798 [2019-09-20 13:07:22,409 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:07:22,411 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:07:22,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:22,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:07:22,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:07:22,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:22" (1/1) ... [2019-09-20 13:07:22,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21620fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:22, skipping insertion in model container [2019-09-20 13:07:22,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:22" (1/1) ... [2019-09-20 13:07:22,426 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:07:22,469 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:07:22,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:22,926 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:07:23,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:23,101 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:07:23,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23 WrapperNode [2019-09-20 13:07:23,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:23,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:07:23,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:07:23,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:07:23,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... [2019-09-20 13:07:23,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:07:23,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:07:23,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:07:23,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:07:23,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:07:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:07:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:07:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:07:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:07:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:07:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:07:23,257 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:07:23,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:07:23,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:23,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:23,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:23,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:07:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:07:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:07:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:07:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:07:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:07:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:07:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:07:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:07:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:07:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:07:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:07:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:07:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:07:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:07:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:07:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:07:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:07:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:07:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:07:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:07:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:07:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:07:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:07:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:07:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:07:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:07:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:07:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:07:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:07:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:07:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:07:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:07:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:07:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:07:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:07:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:07:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:07:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:07:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:07:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:07:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:07:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:07:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:07:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:07:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:07:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:07:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:07:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:07:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:07:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:07:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:07:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:07:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:07:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:07:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:07:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:07:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:07:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:07:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:07:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:07:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:07:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:07:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:07:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:07:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:07:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:07:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:07:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:07:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:07:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:07:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:07:24,486 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:07:24,486 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:07:24,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:24 BoogieIcfgContainer [2019-09-20 13:07:24,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:07:24,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:07:24,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:07:24,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:07:24,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:07:22" (1/3) ... [2019-09-20 13:07:24,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb6ec88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:24, skipping insertion in model container [2019-09-20 13:07:24,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:23" (2/3) ... [2019-09-20 13:07:24,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb6ec88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:24, skipping insertion in model container [2019-09-20 13:07:24,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:24" (3/3) ... [2019-09-20 13:07:24,497 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product38.cil.c [2019-09-20 13:07:24,508 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:07:24,519 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:07:24,537 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:07:24,574 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:07:24,575 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:07:24,575 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:07:24,575 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:07:24,575 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:07:24,575 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:07:24,576 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:07:24,576 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:07:24,576 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:07:24,598 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2019-09-20 13:07:24,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:07:24,608 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:24,609 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:24,612 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:24,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:24,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1109188308, now seen corresponding path program 1 times [2019-09-20 13:07:24,620 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:24,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:24,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:24,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:24,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:25,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:25,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:07:25,020 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:07:25,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:07:25,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:25,039 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 2 states. [2019-09-20 13:07:25,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:25,084 INFO L93 Difference]: Finished difference Result 276 states and 339 transitions. [2019-09-20 13:07:25,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:07:25,086 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:07:25,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:25,099 INFO L225 Difference]: With dead ends: 276 [2019-09-20 13:07:25,099 INFO L226 Difference]: Without dead ends: 140 [2019-09-20 13:07:25,104 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:25,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-09-20 13:07:25,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2019-09-20 13:07:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-09-20 13:07:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 163 transitions. [2019-09-20 13:07:25,160 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 163 transitions. Word has length 59 [2019-09-20 13:07:25,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:25,161 INFO L475 AbstractCegarLoop]: Abstraction has 140 states and 163 transitions. [2019-09-20 13:07:25,161 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:07:25,161 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 163 transitions. [2019-09-20 13:07:25,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:07:25,165 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:25,165 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:25,166 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:25,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:25,166 INFO L82 PathProgramCache]: Analyzing trace with hash 813843432, now seen corresponding path program 1 times [2019-09-20 13:07:25,167 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:25,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:25,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:25,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:25,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:25,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:07:25,318 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:07:25,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:07:25,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:25,319 INFO L87 Difference]: Start difference. First operand 140 states and 163 transitions. Second operand 3 states. [2019-09-20 13:07:25,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:25,367 INFO L93 Difference]: Finished difference Result 221 states and 257 transitions. [2019-09-20 13:07:25,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:07:25,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:07:25,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:25,373 INFO L225 Difference]: With dead ends: 221 [2019-09-20 13:07:25,373 INFO L226 Difference]: Without dead ends: 131 [2019-09-20 13:07:25,377 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:25,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-09-20 13:07:25,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2019-09-20 13:07:25,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-09-20 13:07:25,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2019-09-20 13:07:25,411 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 60 [2019-09-20 13:07:25,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:25,411 INFO L475 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2019-09-20 13:07:25,412 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:07:25,412 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2019-09-20 13:07:25,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:07:25,417 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:25,417 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:25,417 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:25,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:25,417 INFO L82 PathProgramCache]: Analyzing trace with hash 605286682, now seen corresponding path program 1 times [2019-09-20 13:07:25,418 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:25,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:25,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:25,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:25,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:25,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:25,565 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:25,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:25,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:25,566 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 7 states. [2019-09-20 13:07:25,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:25,920 INFO L93 Difference]: Finished difference Result 234 states and 275 transitions. [2019-09-20 13:07:25,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:07:25,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:07:25,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:25,923 INFO L225 Difference]: With dead ends: 234 [2019-09-20 13:07:25,924 INFO L226 Difference]: Without dead ends: 131 [2019-09-20 13:07:25,925 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:07:25,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-09-20 13:07:25,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2019-09-20 13:07:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-09-20 13:07:25,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 150 transitions. [2019-09-20 13:07:25,951 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 150 transitions. Word has length 65 [2019-09-20 13:07:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:25,957 INFO L475 AbstractCegarLoop]: Abstraction has 131 states and 150 transitions. [2019-09-20 13:07:25,957 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 150 transitions. [2019-09-20 13:07:25,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-20 13:07:25,963 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:25,969 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:25,970 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:25,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:25,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1239264208, now seen corresponding path program 1 times [2019-09-20 13:07:25,970 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:25,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:25,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:25,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:25,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:26,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:26,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:07:26,146 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:07:26,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:07:26,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:07:26,147 INFO L87 Difference]: Start difference. First operand 131 states and 150 transitions. Second operand 5 states. [2019-09-20 13:07:26,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:26,725 INFO L93 Difference]: Finished difference Result 340 states and 409 transitions. [2019-09-20 13:07:26,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:07:26,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2019-09-20 13:07:26,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:26,728 INFO L225 Difference]: With dead ends: 340 [2019-09-20 13:07:26,729 INFO L226 Difference]: Without dead ends: 237 [2019-09-20 13:07:26,730 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:26,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2019-09-20 13:07:26,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 218. [2019-09-20 13:07:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2019-09-20 13:07:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 249 transitions. [2019-09-20 13:07:26,773 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 249 transitions. Word has length 78 [2019-09-20 13:07:26,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:26,773 INFO L475 AbstractCegarLoop]: Abstraction has 218 states and 249 transitions. [2019-09-20 13:07:26,773 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:07:26,774 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 249 transitions. [2019-09-20 13:07:26,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:07:26,778 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:26,779 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:26,779 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:26,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:26,779 INFO L82 PathProgramCache]: Analyzing trace with hash 462053503, now seen corresponding path program 1 times [2019-09-20 13:07:26,780 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:26,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:26,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:26,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:26,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:07:26,926 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:26,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:26,927 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:26,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:26,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:26,929 INFO L87 Difference]: Start difference. First operand 218 states and 249 transitions. Second operand 7 states. [2019-09-20 13:07:27,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:27,728 INFO L93 Difference]: Finished difference Result 426 states and 503 transitions. [2019-09-20 13:07:27,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:07:27,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2019-09-20 13:07:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:27,731 INFO L225 Difference]: With dead ends: 426 [2019-09-20 13:07:27,731 INFO L226 Difference]: Without dead ends: 236 [2019-09-20 13:07:27,732 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:07:27,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2019-09-20 13:07:27,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 217. [2019-09-20 13:07:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2019-09-20 13:07:27,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 246 transitions. [2019-09-20 13:07:27,750 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 246 transitions. Word has length 92 [2019-09-20 13:07:27,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:27,751 INFO L475 AbstractCegarLoop]: Abstraction has 217 states and 246 transitions. [2019-09-20 13:07:27,751 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 246 transitions. [2019-09-20 13:07:27,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:07:27,753 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:27,753 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:27,754 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:27,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:27,754 INFO L82 PathProgramCache]: Analyzing trace with hash -440444759, now seen corresponding path program 1 times [2019-09-20 13:07:27,754 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:27,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:27,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:27,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:27,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:27,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:27,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:07:27,853 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:07:27,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:07:27,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:07:27,854 INFO L87 Difference]: Start difference. First operand 217 states and 246 transitions. Second operand 6 states. [2019-09-20 13:07:27,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:27,899 INFO L93 Difference]: Finished difference Result 411 states and 474 transitions. [2019-09-20 13:07:27,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:07:27,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-09-20 13:07:27,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:27,903 INFO L225 Difference]: With dead ends: 411 [2019-09-20 13:07:27,903 INFO L226 Difference]: Without dead ends: 222 [2019-09-20 13:07:27,904 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:27,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2019-09-20 13:07:27,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2019-09-20 13:07:27,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2019-09-20 13:07:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 251 transitions. [2019-09-20 13:07:27,920 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 251 transitions. Word has length 93 [2019-09-20 13:07:27,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:27,920 INFO L475 AbstractCegarLoop]: Abstraction has 222 states and 251 transitions. [2019-09-20 13:07:27,920 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:07:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 251 transitions. [2019-09-20 13:07:27,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:07:27,922 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:27,922 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:27,922 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:27,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:27,923 INFO L82 PathProgramCache]: Analyzing trace with hash 261155115, now seen corresponding path program 1 times [2019-09-20 13:07:27,923 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:27,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:27,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:27,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:27,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:28,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:28,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:07:28,023 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:07:28,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:07:28,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:28,024 INFO L87 Difference]: Start difference. First operand 222 states and 251 transitions. Second operand 8 states. [2019-09-20 13:07:28,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:28,063 INFO L93 Difference]: Finished difference Result 423 states and 491 transitions. [2019-09-20 13:07:28,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:07:28,064 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-09-20 13:07:28,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:28,066 INFO L225 Difference]: With dead ends: 423 [2019-09-20 13:07:28,066 INFO L226 Difference]: Without dead ends: 229 [2019-09-20 13:07:28,067 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2019-09-20 13:07:28,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 226. [2019-09-20 13:07:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2019-09-20 13:07:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2019-09-20 13:07:28,082 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 93 [2019-09-20 13:07:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:28,083 INFO L475 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2019-09-20 13:07:28,083 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:07:28,083 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2019-09-20 13:07:28,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:07:28,085 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:28,085 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:28,085 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:28,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:28,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1986636012, now seen corresponding path program 1 times [2019-09-20 13:07:28,086 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:28,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:28,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:28,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:28,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:28,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:07:28,191 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:07:28,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:07:28,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:28,192 INFO L87 Difference]: Start difference. First operand 226 states and 255 transitions. Second operand 4 states. [2019-09-20 13:07:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:28,476 INFO L93 Difference]: Finished difference Result 661 states and 782 transitions. [2019-09-20 13:07:28,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:07:28,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-09-20 13:07:28,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:28,480 INFO L225 Difference]: With dead ends: 661 [2019-09-20 13:07:28,480 INFO L226 Difference]: Without dead ends: 463 [2019-09-20 13:07:28,482 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:28,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2019-09-20 13:07:28,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 454. [2019-09-20 13:07:28,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2019-09-20 13:07:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 526 transitions. [2019-09-20 13:07:28,529 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 526 transitions. Word has length 93 [2019-09-20 13:07:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:28,530 INFO L475 AbstractCegarLoop]: Abstraction has 454 states and 526 transitions. [2019-09-20 13:07:28,530 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:07:28,530 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 526 transitions. [2019-09-20 13:07:28,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:07:28,532 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:28,532 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:28,532 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:28,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:28,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1429929390, now seen corresponding path program 1 times [2019-09-20 13:07:28,533 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:28,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:28,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:28,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:28,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:28,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:07:28,687 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:07:28,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:07:28,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:07:28,688 INFO L87 Difference]: Start difference. First operand 454 states and 526 transitions. Second operand 9 states. [2019-09-20 13:07:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:29,702 INFO L93 Difference]: Finished difference Result 1193 states and 1446 transitions. [2019-09-20 13:07:29,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:29,703 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2019-09-20 13:07:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:29,710 INFO L225 Difference]: With dead ends: 1193 [2019-09-20 13:07:29,710 INFO L226 Difference]: Without dead ends: 839 [2019-09-20 13:07:29,712 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2019-09-20 13:07:29,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 758. [2019-09-20 13:07:29,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2019-09-20 13:07:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 868 transitions. [2019-09-20 13:07:29,769 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 868 transitions. Word has length 97 [2019-09-20 13:07:29,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:29,770 INFO L475 AbstractCegarLoop]: Abstraction has 758 states and 868 transitions. [2019-09-20 13:07:29,770 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:07:29,770 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 868 transitions. [2019-09-20 13:07:29,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-09-20 13:07:29,773 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:29,773 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:29,774 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:29,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:29,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1557984819, now seen corresponding path program 1 times [2019-09-20 13:07:29,774 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:29,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:29,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:29,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:29,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:07:29,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:29,985 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:30,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:30,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:07:30,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:07:30,390 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:30,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:07:30,391 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:07:30,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:07:30,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:07:30,392 INFO L87 Difference]: Start difference. First operand 758 states and 868 transitions. Second operand 16 states. [2019-09-20 13:07:31,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:31,670 INFO L93 Difference]: Finished difference Result 1728 states and 2055 transitions. [2019-09-20 13:07:31,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-20 13:07:31,670 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2019-09-20 13:07:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:31,677 INFO L225 Difference]: With dead ends: 1728 [2019-09-20 13:07:31,677 INFO L226 Difference]: Without dead ends: 1068 [2019-09-20 13:07:31,680 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2019-09-20 13:07:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2019-09-20 13:07:31,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 924. [2019-09-20 13:07:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2019-09-20 13:07:31,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1068 transitions. [2019-09-20 13:07:31,740 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1068 transitions. Word has length 157 [2019-09-20 13:07:31,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:31,740 INFO L475 AbstractCegarLoop]: Abstraction has 924 states and 1068 transitions. [2019-09-20 13:07:31,741 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:07:31,741 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1068 transitions. [2019-09-20 13:07:31,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2019-09-20 13:07:31,747 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:31,748 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:31,748 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:31,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:31,749 INFO L82 PathProgramCache]: Analyzing trace with hash -2097362584, now seen corresponding path program 1 times [2019-09-20 13:07:31,749 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:31,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:31,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:31,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:31,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2019-09-20 13:07:31,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:31,905 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:31,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:32,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:07:32,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:32,454 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 203 proven. 4 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:07:32,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:32,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-20 13:07:32,471 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:07:32,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:07:32,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:32,473 INFO L87 Difference]: Start difference. First operand 924 states and 1068 transitions. Second operand 19 states. [2019-09-20 13:07:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:38,697 INFO L93 Difference]: Finished difference Result 3462 states and 4817 transitions. [2019-09-20 13:07:38,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-20 13:07:38,698 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 277 [2019-09-20 13:07:38,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:38,716 INFO L225 Difference]: With dead ends: 3462 [2019-09-20 13:07:38,716 INFO L226 Difference]: Without dead ends: 2574 [2019-09-20 13:07:38,725 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=523, Invalid=3137, Unknown=0, NotChecked=0, Total=3660 [2019-09-20 13:07:38,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2019-09-20 13:07:38,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1763. [2019-09-20 13:07:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2019-09-20 13:07:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 1970 transitions. [2019-09-20 13:07:38,882 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 1970 transitions. Word has length 277 [2019-09-20 13:07:38,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:38,887 INFO L475 AbstractCegarLoop]: Abstraction has 1763 states and 1970 transitions. [2019-09-20 13:07:38,887 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:07:38,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 1970 transitions. [2019-09-20 13:07:38,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2019-09-20 13:07:38,894 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:38,895 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:38,895 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:38,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:38,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1006654504, now seen corresponding path program 1 times [2019-09-20 13:07:38,896 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:38,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:38,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:38,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:38,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 98 proven. 53 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2019-09-20 13:07:39,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:39,150 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:39,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:39,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-20 13:07:39,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 238 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-09-20 13:07:39,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:39,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:07:39,821 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:07:39,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:07:39,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:07:39,822 INFO L87 Difference]: Start difference. First operand 1763 states and 1970 transitions. Second operand 20 states. [2019-09-20 13:07:41,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:41,520 INFO L93 Difference]: Finished difference Result 3326 states and 3735 transitions. [2019-09-20 13:07:41,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:41,521 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 293 [2019-09-20 13:07:41,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:41,532 INFO L225 Difference]: With dead ends: 3326 [2019-09-20 13:07:41,532 INFO L226 Difference]: Without dead ends: 1767 [2019-09-20 13:07:41,536 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:07:41,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2019-09-20 13:07:41,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1763. [2019-09-20 13:07:41,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2019-09-20 13:07:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 1965 transitions. [2019-09-20 13:07:41,656 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 1965 transitions. Word has length 293 [2019-09-20 13:07:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:41,657 INFO L475 AbstractCegarLoop]: Abstraction has 1763 states and 1965 transitions. [2019-09-20 13:07:41,657 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:07:41,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 1965 transitions. [2019-09-20 13:07:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-09-20 13:07:41,666 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:41,666 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:41,666 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:41,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1560243661, now seen corresponding path program 1 times [2019-09-20 13:07:41,667 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:41,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:41,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:41,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:41,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 94 proven. 46 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2019-09-20 13:07:41,974 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:41,974 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:42,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:42,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:07:42,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 166 proven. 16 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:07:42,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:42,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:07:42,410 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:07:42,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:07:42,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:07:42,411 INFO L87 Difference]: Start difference. First operand 1763 states and 1965 transitions. Second operand 14 states. [2019-09-20 13:07:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:44,889 INFO L93 Difference]: Finished difference Result 3810 states and 4628 transitions. [2019-09-20 13:07:44,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:07:44,889 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 294 [2019-09-20 13:07:44,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:44,922 INFO L225 Difference]: With dead ends: 3810 [2019-09-20 13:07:44,922 INFO L226 Difference]: Without dead ends: 2823 [2019-09-20 13:07:44,929 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 313 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:07:44,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2019-09-20 13:07:45,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2177. [2019-09-20 13:07:45,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2177 states. [2019-09-20 13:07:45,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 2431 transitions. [2019-09-20 13:07:45,136 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 2431 transitions. Word has length 294 [2019-09-20 13:07:45,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:45,138 INFO L475 AbstractCegarLoop]: Abstraction has 2177 states and 2431 transitions. [2019-09-20 13:07:45,138 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:07:45,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 2431 transitions. [2019-09-20 13:07:45,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2019-09-20 13:07:45,150 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:45,151 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:45,151 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:45,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:45,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1866853228, now seen corresponding path program 1 times [2019-09-20 13:07:45,152 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:45,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:45,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:45,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:45,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 177 proven. 23 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2019-09-20 13:07:45,619 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:45,620 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:45,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:45,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 42 conjunts are in the unsatisfiable core [2019-09-20 13:07:45,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 216 proven. 51 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2019-09-20 13:07:46,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:46,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 20 [2019-09-20 13:07:46,136 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:07:46,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:07:46,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:07:46,137 INFO L87 Difference]: Start difference. First operand 2177 states and 2431 transitions. Second operand 20 states. [2019-09-20 13:07:48,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:48,355 INFO L93 Difference]: Finished difference Result 3493 states and 3923 transitions. [2019-09-20 13:07:48,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-20 13:07:48,356 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 363 [2019-09-20 13:07:48,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:48,358 INFO L225 Difference]: With dead ends: 3493 [2019-09-20 13:07:48,358 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:07:48,371 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 364 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=906, Unknown=0, NotChecked=0, Total=1122 [2019-09-20 13:07:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:07:48,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:07:48,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:07:48,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:07:48,373 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 363 [2019-09-20 13:07:48,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:48,374 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:07:48,374 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:07:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:07:48,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:07:48,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 13:07:48,943 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 123 [2019-09-20 13:07:49,853 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 156 [2019-09-20 13:07:50,551 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 156 [2019-09-20 13:07:51,292 WARN L191 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 28 [2019-09-20 13:07:51,673 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 27 [2019-09-20 13:07:51,917 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2019-09-20 13:07:52,534 WARN L191 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 49 [2019-09-20 13:07:53,915 WARN L191 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 192 DAG size of output: 63 [2019-09-20 13:07:54,243 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 32 [2019-09-20 13:07:55,413 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 232 DAG size of output: 40