/usr/bin/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/elevator_spec13_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:28:07,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:28:07,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:28:07,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:28:07,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:28:07,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:28:07,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:28:07,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:28:07,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:28:07,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:28:07,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:28:07,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:28:07,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:28:07,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:28:07,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:28:07,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:28:07,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:28:07,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:28:07,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:28:07,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:28:07,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:28:07,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:28:07,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:28:07,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:28:07,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:28:07,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:28:07,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:28:07,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:28:07,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:28:07,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:28:07,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:28:07,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:28:07,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:28:07,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:28:07,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:28:07,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:28:07,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:28:07,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:28:07,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:28:07,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:28:07,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:28:07,545 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 [2019-11-06 21:28:07,569 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:28:07,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:28:07,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:28:07,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:28:07,573 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:28:07,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:28:07,574 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:28:07,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:28:07,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:28:07,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:28:07,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:28:07,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:28:07,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:28:07,575 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:28:07,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:28:07,575 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:28:07,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:28:07,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:28:07,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:28:07,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:28:07,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:28:07,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:28:07,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:28:07,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:28:07,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:28:07,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:28:07,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:28:07,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:28:07,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:28:07,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:28:07,875 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:28:07,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:28:07,881 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:28:07,881 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:28:07,882 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2019-11-06 21:28:07,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/601dbe2ae/c641080d4e58435b8c41921ef2a17d9d/FLAG4852a7c62 [2019-11-06 21:28:08,602 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:28:08,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2019-11-06 21:28:08,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/601dbe2ae/c641080d4e58435b8c41921ef2a17d9d/FLAG4852a7c62 [2019-11-06 21:28:08,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/601dbe2ae/c641080d4e58435b8c41921ef2a17d9d [2019-11-06 21:28:08,789 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:28:08,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:28:08,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:28:08,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:28:08,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:28:08,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:28:08" (1/1) ... [2019-11-06 21:28:08,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510f79ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:08, skipping insertion in model container [2019-11-06 21:28:08,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:28:08" (1/1) ... [2019-11-06 21:28:08,807 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:28:08,895 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:28:09,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:28:09,668 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:28:09,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:28:09,914 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:28:09,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:09 WrapperNode [2019-11-06 21:28:09,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:28:09,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:28:09,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:28:09,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:28:09,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:09" (1/1) ... [2019-11-06 21:28:09,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:09" (1/1) ... [2019-11-06 21:28:09,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:09" (1/1) ... [2019-11-06 21:28:09,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:09" (1/1) ... [2019-11-06 21:28:10,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:09" (1/1) ... [2019-11-06 21:28:10,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:09" (1/1) ... [2019-11-06 21:28:10,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:09" (1/1) ... [2019-11-06 21:28:10,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:28:10,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:28:10,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:28:10,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:28:10,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:09" (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 [2019-11-06 21:28:10,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:28:10,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:28:10,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:28:10,257 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:28:10,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:28:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:28:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:28:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:28:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:28:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:28:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:28:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-06 21:28:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-06 21:28:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-06 21:28:10,264 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-06 21:28:10,264 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-06 21:28:10,264 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-06 21:28:10,264 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-06 21:28:10,265 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-06 21:28:10,265 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-06 21:28:10,265 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-06 21:28:10,266 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-06 21:28:10,266 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-06 21:28:10,267 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-06 21:28:10,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-06 21:28:10,267 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-06 21:28:10,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-06 21:28:10,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-06 21:28:10,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-06 21:28:10,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-06 21:28:10,268 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-06 21:28:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-06 21:28:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-06 21:28:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-06 21:28:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-06 21:28:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-11-06 21:28:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:28:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-11-06 21:28:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-06 21:28:10,271 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-06 21:28:10,271 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-06 21:28:10,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-06 21:28:10,271 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-06 21:28:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-06 21:28:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-06 21:28:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-06 21:28:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-06 21:28:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-06 21:28:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-06 21:28:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-06 21:28:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-06 21:28:10,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-06 21:28:10,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-06 21:28:10,274 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:28:10,274 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:28:10,275 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:28:10,275 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:28:10,275 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-06 21:28:10,275 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-06 21:28:10,276 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-06 21:28:10,276 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-06 21:28:10,277 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-06 21:28:10,277 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-06 21:28:10,277 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-06 21:28:10,277 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-06 21:28:10,278 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:28:10,278 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-06 21:28:10,278 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-06 21:28:10,279 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-06 21:28:10,279 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:28:10,279 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-06 21:28:10,280 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:28:10,280 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:28:10,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:28:10,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-11-06 21:28:10,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-11-06 21:28:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:28:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:28:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-06 21:28:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-06 21:28:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-06 21:28:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-06 21:28:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:28:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:28:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:28:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:28:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:28:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:28:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:28:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:28:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:28:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:28:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:28:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:28:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:28:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:28:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:28:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:28:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:28:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:28:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:28:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:28:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:28:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-06 21:28:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-06 21:28:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-06 21:28:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-06 21:28:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-06 21:28:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-06 21:28:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-06 21:28:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-06 21:28:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-06 21:28:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:28:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-06 21:28:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-06 21:28:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-06 21:28:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-06 21:28:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-06 21:28:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-06 21:28:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-06 21:28:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-06 21:28:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-06 21:28:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-06 21:28:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-06 21:28:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-06 21:28:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-06 21:28:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-06 21:28:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-06 21:28:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-06 21:28:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-06 21:28:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-06 21:28:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-06 21:28:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-06 21:28:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-06 21:28:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-06 21:28:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-06 21:28:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-06 21:28:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-11-06 21:28:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-11-06 21:28:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-11-06 21:28:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-11-06 21:28:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-06 21:28:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-06 21:28:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-06 21:28:10,320 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-06 21:28:10,320 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-06 21:28:10,320 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-06 21:28:10,320 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:28:10,322 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:28:10,322 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:28:10,322 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:28:10,322 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:28:10,323 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-06 21:28:10,323 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-06 21:28:10,323 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-06 21:28:10,323 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-06 21:28:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-06 21:28:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-06 21:28:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-06 21:28:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:28:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-06 21:28:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:28:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:28:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:28:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:28:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:28:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:28:12,942 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:28:12,942 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-06 21:28:12,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:28:12 BoogieIcfgContainer [2019-11-06 21:28:12,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:28:12,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:28:12,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:28:12,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:28:12,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:28:08" (1/3) ... [2019-11-06 21:28:12,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1134c3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:28:12, skipping insertion in model container [2019-11-06 21:28:12,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:09" (2/3) ... [2019-11-06 21:28:12,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1134c3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:28:12, skipping insertion in model container [2019-11-06 21:28:12,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:28:12" (3/3) ... [2019-11-06 21:28:12,955 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2019-11-06 21:28:12,965 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:28:12,977 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:28:12,990 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:28:13,042 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:28:13,042 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:28:13,042 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:28:13,042 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:28:13,042 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:28:13,042 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:28:13,043 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:28:13,043 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:28:13,090 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states. [2019-11-06 21:28:13,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-06 21:28:13,124 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:13,126 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:28:13,129 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:13,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:13,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1312558517, now seen corresponding path program 1 times [2019-11-06 21:28:13,147 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:13,147 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201782605] [2019-11-06 21:28:13,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:14,858 WARN L191 SmtUtils]: Spent 979.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-11-06 21:28:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-06 21:28:15,317 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201782605] [2019-11-06 21:28:15,318 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640548624] [2019-11-06 21:28:15,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 2878 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:28:15,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:28:15,997 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:15,998 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2019-11-06 21:28:16,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815568793] [2019-11-06 21:28:16,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:28:16,005 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:16,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:28:16,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:28:16,022 INFO L87 Difference]: Start difference. First operand 807 states. Second operand 4 states. [2019-11-06 21:28:16,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:16,278 INFO L93 Difference]: Finished difference Result 1315 states and 2130 transitions. [2019-11-06 21:28:16,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:28:16,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-11-06 21:28:16,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:16,358 INFO L225 Difference]: With dead ends: 1315 [2019-11-06 21:28:16,359 INFO L226 Difference]: Without dead ends: 663 [2019-11-06 21:28:16,372 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:28:16,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2019-11-06 21:28:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 663. [2019-11-06 21:28:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2019-11-06 21:28:16,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1053 transitions. [2019-11-06 21:28:16,516 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1053 transitions. Word has length 113 [2019-11-06 21:28:16,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:16,516 INFO L462 AbstractCegarLoop]: Abstraction has 663 states and 1053 transitions. [2019-11-06 21:28:16,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:28:16,517 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1053 transitions. [2019-11-06 21:28:16,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-06 21:28:16,522 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:16,522 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:28:16,730 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:16,730 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:16,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:16,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1562455753, now seen corresponding path program 1 times [2019-11-06 21:28:16,731 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:16,731 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196042936] [2019-11-06 21:28:16,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:17,817 WARN L191 SmtUtils]: Spent 932.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-11-06 21:28:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-06 21:28:18,195 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196042936] [2019-11-06 21:28:18,195 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587689937] [2019-11-06 21:28:18,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 2880 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:28:18,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 21:28:18,976 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:18,976 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2019-11-06 21:28:18,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857224718] [2019-11-06 21:28:18,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:28:18,978 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:18,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:28:18,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:28:18,979 INFO L87 Difference]: Start difference. First operand 663 states and 1053 transitions. Second operand 7 states. [2019-11-06 21:28:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:19,175 INFO L93 Difference]: Finished difference Result 1309 states and 2093 transitions. [2019-11-06 21:28:19,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:28:19,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-11-06 21:28:19,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:19,184 INFO L225 Difference]: With dead ends: 1309 [2019-11-06 21:28:19,185 INFO L226 Difference]: Without dead ends: 674 [2019-11-06 21:28:19,189 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2019-11-06 21:28:19,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2019-11-06 21:28:19,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 670. [2019-11-06 21:28:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-11-06 21:28:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1065 transitions. [2019-11-06 21:28:19,247 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1065 transitions. Word has length 115 [2019-11-06 21:28:19,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:19,249 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 1065 transitions. [2019-11-06 21:28:19,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:28:19,249 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1065 transitions. [2019-11-06 21:28:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-06 21:28:19,257 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:19,257 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:28:19,474 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:19,477 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:19,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:19,478 INFO L82 PathProgramCache]: Analyzing trace with hash 543611026, now seen corresponding path program 1 times [2019-11-06 21:28:19,479 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:19,480 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716413901] [2019-11-06 21:28:19,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,443 WARN L191 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-11-06 21:28:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-06 21:28:20,718 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716413901] [2019-11-06 21:28:20,719 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055514852] [2019-11-06 21:28:20,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:28:21,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:28:21,339 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:21,339 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-11-06 21:28:21,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016794908] [2019-11-06 21:28:21,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:28:21,342 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:21,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:28:21,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:28:21,344 INFO L87 Difference]: Start difference. First operand 670 states and 1065 transitions. Second operand 4 states. [2019-11-06 21:28:21,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:21,445 INFO L93 Difference]: Finished difference Result 1325 states and 2118 transitions. [2019-11-06 21:28:21,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:28:21,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-11-06 21:28:21,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:21,451 INFO L225 Difference]: With dead ends: 1325 [2019-11-06 21:28:21,451 INFO L226 Difference]: Without dead ends: 681 [2019-11-06 21:28:21,455 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:28:21,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2019-11-06 21:28:21,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 679. [2019-11-06 21:28:21,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-11-06 21:28:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1073 transitions. [2019-11-06 21:28:21,516 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1073 transitions. Word has length 116 [2019-11-06 21:28:21,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:21,517 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 1073 transitions. [2019-11-06 21:28:21,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:28:21,517 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1073 transitions. [2019-11-06 21:28:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-06 21:28:21,520 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:21,520 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:28:21,726 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:21,727 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:21,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:21,727 INFO L82 PathProgramCache]: Analyzing trace with hash 246045182, now seen corresponding path program 1 times [2019-11-06 21:28:21,727 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:21,728 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135300919] [2019-11-06 21:28:21,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,602 WARN L191 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-11-06 21:28:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:28:22,989 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135300919] [2019-11-06 21:28:22,989 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379044141] [2019-11-06 21:28:22,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:28:23,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 21:28:23,869 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:23,869 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2019-11-06 21:28:23,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425583483] [2019-11-06 21:28:23,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:28:23,870 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:23,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:28:23,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2019-11-06 21:28:23,872 INFO L87 Difference]: Start difference. First operand 679 states and 1073 transitions. Second operand 7 states. [2019-11-06 21:28:24,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:24,050 INFO L93 Difference]: Finished difference Result 1326 states and 2109 transitions. [2019-11-06 21:28:24,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:28:24,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-11-06 21:28:24,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:24,061 INFO L225 Difference]: With dead ends: 1326 [2019-11-06 21:28:24,061 INFO L226 Difference]: Without dead ends: 688 [2019-11-06 21:28:24,066 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:28:24,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2019-11-06 21:28:24,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 679. [2019-11-06 21:28:24,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-11-06 21:28:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1073 transitions. [2019-11-06 21:28:24,098 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1073 transitions. Word has length 116 [2019-11-06 21:28:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:24,099 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 1073 transitions. [2019-11-06 21:28:24,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:28:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1073 transitions. [2019-11-06 21:28:24,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-06 21:28:24,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:24,102 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:28:24,318 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:24,318 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:24,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:24,319 INFO L82 PathProgramCache]: Analyzing trace with hash 703956050, now seen corresponding path program 1 times [2019-11-06 21:28:24,319 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:24,319 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828272686] [2019-11-06 21:28:24,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,180 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-11-06 21:28:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:28:25,453 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828272686] [2019-11-06 21:28:25,453 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087576399] [2019-11-06 21:28:25,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:25,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 2883 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:28:25,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 21:28:25,991 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:25,991 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-11-06 21:28:25,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888914635] [2019-11-06 21:28:25,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:28:25,992 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:25,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:28:25,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:28:25,994 INFO L87 Difference]: Start difference. First operand 679 states and 1073 transitions. Second operand 4 states. [2019-11-06 21:28:26,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:26,268 INFO L93 Difference]: Finished difference Result 1359 states and 2179 transitions. [2019-11-06 21:28:26,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:28:26,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-11-06 21:28:26,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:26,285 INFO L225 Difference]: With dead ends: 1359 [2019-11-06 21:28:26,285 INFO L226 Difference]: Without dead ends: 721 [2019-11-06 21:28:26,289 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:28:26,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2019-11-06 21:28:26,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 718. [2019-11-06 21:28:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2019-11-06 21:28:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1146 transitions. [2019-11-06 21:28:26,321 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1146 transitions. Word has length 119 [2019-11-06 21:28:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:26,322 INFO L462 AbstractCegarLoop]: Abstraction has 718 states and 1146 transitions. [2019-11-06 21:28:26,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:28:26,322 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1146 transitions. [2019-11-06 21:28:26,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-06 21:28:26,325 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:26,325 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:28:26,539 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:26,539 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:26,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:26,540 INFO L82 PathProgramCache]: Analyzing trace with hash 504600262, now seen corresponding path program 1 times [2019-11-06 21:28:26,540 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:26,540 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337261818] [2019-11-06 21:28:26,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,581 WARN L191 SmtUtils]: Spent 937.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-11-06 21:28:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:28:27,876 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337261818] [2019-11-06 21:28:27,876 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860065152] [2019-11-06 21:28:27,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:28:28,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 21:28:28,436 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:28,436 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-11-06 21:28:28,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811650273] [2019-11-06 21:28:28,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:28:28,437 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:28,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:28:28,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:28:28,438 INFO L87 Difference]: Start difference. First operand 718 states and 1146 transitions. Second operand 4 states. [2019-11-06 21:28:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:28,517 INFO L93 Difference]: Finished difference Result 1383 states and 2225 transitions. [2019-11-06 21:28:28,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:28:28,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-11-06 21:28:28,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:28,523 INFO L225 Difference]: With dead ends: 1383 [2019-11-06 21:28:28,523 INFO L226 Difference]: Without dead ends: 718 [2019-11-06 21:28:28,527 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:28:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2019-11-06 21:28:28,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2019-11-06 21:28:28,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2019-11-06 21:28:28,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1141 transitions. [2019-11-06 21:28:28,560 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1141 transitions. Word has length 121 [2019-11-06 21:28:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:28,560 INFO L462 AbstractCegarLoop]: Abstraction has 718 states and 1141 transitions. [2019-11-06 21:28:28,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:28:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1141 transitions. [2019-11-06 21:28:28,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-06 21:28:28,565 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:28,565 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:28:28,774 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:28,775 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:28,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:28,775 INFO L82 PathProgramCache]: Analyzing trace with hash -2127688715, now seen corresponding path program 1 times [2019-11-06 21:28:28,776 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:28,776 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689252485] [2019-11-06 21:28:28,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,707 WARN L191 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-11-06 21:28:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:30,005 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:28:30,005 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689252485] [2019-11-06 21:28:30,005 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503263558] [2019-11-06 21:28:30,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:30,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:28:30,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:30,644 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 21:28:30,644 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:30,644 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-11-06 21:28:30,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348552687] [2019-11-06 21:28:30,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:28:30,645 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:30,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:28:30,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:28:30,646 INFO L87 Difference]: Start difference. First operand 718 states and 1141 transitions. Second operand 7 states. [2019-11-06 21:28:30,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:30,812 INFO L93 Difference]: Finished difference Result 1351 states and 2157 transitions. [2019-11-06 21:28:30,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:28:30,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2019-11-06 21:28:30,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:30,818 INFO L225 Difference]: With dead ends: 1351 [2019-11-06 21:28:30,818 INFO L226 Difference]: Without dead ends: 732 [2019-11-06 21:28:30,822 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:28:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2019-11-06 21:28:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 725. [2019-11-06 21:28:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2019-11-06 21:28:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1152 transitions. [2019-11-06 21:28:30,848 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1152 transitions. Word has length 122 [2019-11-06 21:28:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:30,848 INFO L462 AbstractCegarLoop]: Abstraction has 725 states and 1152 transitions. [2019-11-06 21:28:30,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:28:30,848 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1152 transitions. [2019-11-06 21:28:30,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-06 21:28:30,851 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:30,851 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:28:31,062 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:31,062 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:31,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:31,063 INFO L82 PathProgramCache]: Analyzing trace with hash 454016772, now seen corresponding path program 1 times [2019-11-06 21:28:31,063 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:31,064 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977857775] [2019-11-06 21:28:31,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,969 WARN L191 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-11-06 21:28:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:28:32,249 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977857775] [2019-11-06 21:28:32,249 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982288976] [2019-11-06 21:28:32,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:28:32,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 21:28:32,885 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:32,886 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-11-06 21:28:32,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421178983] [2019-11-06 21:28:32,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:28:32,889 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:32,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:28:32,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:28:32,890 INFO L87 Difference]: Start difference. First operand 725 states and 1152 transitions. Second operand 7 states. [2019-11-06 21:28:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:33,015 INFO L93 Difference]: Finished difference Result 1351 states and 2156 transitions. [2019-11-06 21:28:33,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:28:33,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2019-11-06 21:28:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:33,022 INFO L225 Difference]: With dead ends: 1351 [2019-11-06 21:28:33,023 INFO L226 Difference]: Without dead ends: 732 [2019-11-06 21:28:33,026 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:28:33,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2019-11-06 21:28:33,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 722. [2019-11-06 21:28:33,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2019-11-06 21:28:33,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1146 transitions. [2019-11-06 21:28:33,059 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1146 transitions. Word has length 123 [2019-11-06 21:28:33,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:33,059 INFO L462 AbstractCegarLoop]: Abstraction has 722 states and 1146 transitions. [2019-11-06 21:28:33,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:28:33,060 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1146 transitions. [2019-11-06 21:28:33,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-06 21:28:33,063 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:33,063 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:28:33,279 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:33,281 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:33,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:33,281 INFO L82 PathProgramCache]: Analyzing trace with hash 706764066, now seen corresponding path program 1 times [2019-11-06 21:28:33,281 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:33,282 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522187045] [2019-11-06 21:28:33,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,463 WARN L191 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 385 [2019-11-06 21:28:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:28:34,745 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522187045] [2019-11-06 21:28:34,745 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543895014] [2019-11-06 21:28:34,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:28:35,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 21:28:35,334 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:35,334 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-11-06 21:28:35,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283412388] [2019-11-06 21:28:35,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:28:35,335 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:35,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:28:35,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:28:35,335 INFO L87 Difference]: Start difference. First operand 722 states and 1146 transitions. Second operand 4 states. [2019-11-06 21:28:35,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:35,422 INFO L93 Difference]: Finished difference Result 1387 states and 2225 transitions. [2019-11-06 21:28:35,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:28:35,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-11-06 21:28:35,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:35,429 INFO L225 Difference]: With dead ends: 1387 [2019-11-06 21:28:35,429 INFO L226 Difference]: Without dead ends: 722 [2019-11-06 21:28:35,433 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:28:35,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2019-11-06 21:28:35,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2019-11-06 21:28:35,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2019-11-06 21:28:35,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1143 transitions. [2019-11-06 21:28:35,459 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1143 transitions. Word has length 123 [2019-11-06 21:28:35,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:35,460 INFO L462 AbstractCegarLoop]: Abstraction has 722 states and 1143 transitions. [2019-11-06 21:28:35,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:28:35,460 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1143 transitions. [2019-11-06 21:28:35,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-06 21:28:35,462 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:35,462 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:28:35,670 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:35,670 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:35,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:35,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1900302799, now seen corresponding path program 1 times [2019-11-06 21:28:35,671 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:35,672 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305535211] [2019-11-06 21:28:35,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:36,795 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 385 [2019-11-06 21:28:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:28:37,092 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305535211] [2019-11-06 21:28:37,093 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550556533] [2019-11-06 21:28:37,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:28:37,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:37,717 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-06 21:28:37,718 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:37,718 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-11-06 21:28:37,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888318183] [2019-11-06 21:28:37,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:28:37,722 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:37,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:28:37,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:28:37,723 INFO L87 Difference]: Start difference. First operand 722 states and 1143 transitions. Second operand 4 states. [2019-11-06 21:28:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:37,938 INFO L93 Difference]: Finished difference Result 1383 states and 2219 transitions. [2019-11-06 21:28:37,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:28:37,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-11-06 21:28:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:37,944 INFO L225 Difference]: With dead ends: 1383 [2019-11-06 21:28:37,944 INFO L226 Difference]: Without dead ends: 764 [2019-11-06 21:28:37,947 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:28:37,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2019-11-06 21:28:37,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 764. [2019-11-06 21:28:37,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2019-11-06 21:28:37,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1220 transitions. [2019-11-06 21:28:37,987 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1220 transitions. Word has length 124 [2019-11-06 21:28:37,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:37,988 INFO L462 AbstractCegarLoop]: Abstraction has 764 states and 1220 transitions. [2019-11-06 21:28:37,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:28:37,988 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1220 transitions. [2019-11-06 21:28:37,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-06 21:28:37,990 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:37,990 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:28:38,197 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:38,197 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:38,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:38,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1779748070, now seen corresponding path program 1 times [2019-11-06 21:28:38,198 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:38,198 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197072576] [2019-11-06 21:28:38,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,396 WARN L191 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 385 [2019-11-06 21:28:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:28:39,648 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197072576] [2019-11-06 21:28:39,648 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281746246] [2019-11-06 21:28:39,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-06 21:28:40,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:40,289 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-06 21:28:40,289 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:40,289 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-11-06 21:28:40,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378726051] [2019-11-06 21:28:40,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:28:40,290 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:40,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:28:40,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:28:40,291 INFO L87 Difference]: Start difference. First operand 764 states and 1220 transitions. Second operand 3 states. [2019-11-06 21:28:40,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:40,435 INFO L93 Difference]: Finished difference Result 1990 states and 3213 transitions. [2019-11-06 21:28:40,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:28:40,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-11-06 21:28:40,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:40,446 INFO L225 Difference]: With dead ends: 1990 [2019-11-06 21:28:40,446 INFO L226 Difference]: Without dead ends: 1375 [2019-11-06 21:28:40,450 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:28:40,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2019-11-06 21:28:40,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1304. [2019-11-06 21:28:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1304 states. [2019-11-06 21:28:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 2105 transitions. [2019-11-06 21:28:40,518 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 2105 transitions. Word has length 126 [2019-11-06 21:28:40,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:40,520 INFO L462 AbstractCegarLoop]: Abstraction has 1304 states and 2105 transitions. [2019-11-06 21:28:40,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:28:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 2105 transitions. [2019-11-06 21:28:40,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-11-06 21:28:40,529 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:40,529 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:28:40,736 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:40,736 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:40,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:40,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2093874489, now seen corresponding path program 1 times [2019-11-06 21:28:40,737 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:40,737 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757134405] [2019-11-06 21:28:40,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat