/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 22:36:27,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 22:36:27,238 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 22:36:27,242 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 22:36:27,243 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 22:36:27,265 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 22:36:27,265 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 22:36:27,265 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 22:36:27,266 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 22:36:27,272 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 22:36:27,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 22:36:27,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 22:36:27,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 22:36:27,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 22:36:27,273 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 22:36:27,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 22:36:27,273 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 22:36:27,274 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 22:36:27,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 22:36:27,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 22:36:27,274 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 22:36:27,274 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 22:36:27,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 22:36:27,275 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 22:36:27,275 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 22:36:27,275 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 22:36:27,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 22:36:27,275 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 22:36:27,276 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 22:36:27,276 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 22:36:27,277 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 22:36:27,277 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 22:36:27,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 22:36:27,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 22:36:27,277 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 22:36:27,277 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 22:36:27,277 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 22:36:27,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 22:36:27,278 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 22:36:27,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 22:36:27,278 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 22:36:27,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 22:36:27,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 22:36:27,278 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 22:36:27,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 22:36:27,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 22:36:27,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 22:36:27,492 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 22:36:27,495 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 22:36:27,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c [2023-12-15 22:36:28,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 22:36:28,670 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 22:36:28,670 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c [2023-12-15 22:36:28,684 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80adb8376/d8e31338e313420d884dcadb30340f8d/FLAG5517be298 [2023-12-15 22:36:28,694 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80adb8376/d8e31338e313420d884dcadb30340f8d [2023-12-15 22:36:28,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 22:36:28,697 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 22:36:28,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 22:36:28,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 22:36:28,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 22:36:28,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:36:28" (1/1) ... [2023-12-15 22:36:28,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297315be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:28, skipping insertion in model container [2023-12-15 22:36:28,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:36:28" (1/1) ... [2023-12-15 22:36:28,738 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 22:36:28,863 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2023-12-15 22:36:29,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 22:36:29,129 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 22:36:29,135 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2023-12-15 22:36:29,136 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [57] [2023-12-15 22:36:29,138 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [159] [2023-12-15 22:36:29,138 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [525] [2023-12-15 22:36:29,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [541] [2023-12-15 22:36:29,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [579] [2023-12-15 22:36:29,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [932] [2023-12-15 22:36:29,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1604] [2023-12-15 22:36:29,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1724] [2023-12-15 22:36:29,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3302] [2023-12-15 22:36:29,141 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2023-12-15 22:36:29,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 22:36:29,249 INFO L206 MainTranslator]: Completed translation [2023-12-15 22:36:29,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:29 WrapperNode [2023-12-15 22:36:29,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 22:36:29,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 22:36:29,251 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 22:36:29,251 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 22:36:29,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:29" (1/1) ... [2023-12-15 22:36:29,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:29" (1/1) ... [2023-12-15 22:36:29,326 INFO L138 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 908 [2023-12-15 22:36:29,327 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 22:36:29,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 22:36:29,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 22:36:29,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 22:36:29,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:29" (1/1) ... [2023-12-15 22:36:29,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:29" (1/1) ... [2023-12-15 22:36:29,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:29" (1/1) ... [2023-12-15 22:36:29,392 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-12-15 22:36:29,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:29" (1/1) ... [2023-12-15 22:36:29,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:29" (1/1) ... [2023-12-15 22:36:29,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:29" (1/1) ... [2023-12-15 22:36:29,425 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:29" (1/1) ... [2023-12-15 22:36:29,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:29" (1/1) ... [2023-12-15 22:36:29,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:29" (1/1) ... [2023-12-15 22:36:29,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 22:36:29,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 22:36:29,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 22:36:29,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 22:36:29,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:29" (1/1) ... [2023-12-15 22:36:29,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 22:36:29,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:29,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 22:36:29,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 22:36:29,494 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-12-15 22:36:29,495 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-12-15 22:36:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 22:36:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-15 22:36:29,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-15 22:36:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-12-15 22:36:29,495 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-12-15 22:36:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-15 22:36:29,495 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-15 22:36:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-15 22:36:29,495 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-15 22:36:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-15 22:36:29,496 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-15 22:36:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-12-15 22:36:29,496 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-12-15 22:36:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-15 22:36:29,496 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-15 22:36:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-15 22:36:29,496 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-15 22:36:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-12-15 22:36:29,496 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-12-15 22:36:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-15 22:36:29,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-15 22:36:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-15 22:36:29,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-15 22:36:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-15 22:36:29,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-15 22:36:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-15 22:36:29,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-15 22:36:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-12-15 22:36:29,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-12-15 22:36:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-15 22:36:29,497 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-15 22:36:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-15 22:36:29,497 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-15 22:36:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-15 22:36:29,498 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-15 22:36:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-15 22:36:29,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-15 22:36:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-15 22:36:29,498 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-15 22:36:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 22:36:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 22:36:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 22:36:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-15 22:36:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-15 22:36:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-15 22:36:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-15 22:36:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-15 22:36:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-15 22:36:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-15 22:36:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-15 22:36:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-15 22:36:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-15 22:36:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-15 22:36:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-15 22:36:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-15 22:36:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-15 22:36:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-15 22:36:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-15 22:36:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-15 22:36:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-15 22:36:29,500 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-15 22:36:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-15 22:36:29,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-15 22:36:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-15 22:36:29,500 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-15 22:36:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-15 22:36:29,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-15 22:36:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-12-15 22:36:29,500 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-12-15 22:36:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 22:36:29,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 22:36:29,501 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-15 22:36:29,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-15 22:36:29,656 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 22:36:29,658 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 22:36:30,391 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 22:36:30,439 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 22:36:30,439 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 22:36:30,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:36:30 BoogieIcfgContainer [2023-12-15 22:36:30,440 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 22:36:30,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 22:36:30,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 22:36:30,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 22:36:30,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:36:28" (1/3) ... [2023-12-15 22:36:30,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768177ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:36:30, skipping insertion in model container [2023-12-15 22:36:30,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:36:29" (2/3) ... [2023-12-15 22:36:30,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768177ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:36:30, skipping insertion in model container [2023-12-15 22:36:30,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:36:30" (3/3) ... [2023-12-15 22:36:30,445 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2023-12-15 22:36:30,458 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 22:36:30,458 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 22:36:30,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 22:36:30,517 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@72084a01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 22:36:30,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 22:36:30,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 567 states, 438 states have (on average 1.721461187214612) internal successors, (754), 461 states have internal predecessors, (754), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-15 22:36:30,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-15 22:36:30,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:30,545 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:30,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:30,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1401391401, now seen corresponding path program 1 times [2023-12-15 22:36:30,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:30,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733219238] [2023-12-15 22:36:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:30,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:31,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:31,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:31,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 22:36:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:31,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 22:36:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:31,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:31,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 22:36:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:31,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 22:36:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:31,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:31,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:31,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-15 22:36:31,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:31,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733219238] [2023-12-15 22:36:31,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733219238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:31,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:36:31,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 22:36:31,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626615004] [2023-12-15 22:36:31,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:31,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:36:31,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:31,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:36:31,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:36:31,708 INFO L87 Difference]: Start difference. First operand has 567 states, 438 states have (on average 1.721461187214612) internal successors, (754), 461 states have internal predecessors, (754), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:36,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:36,249 INFO L93 Difference]: Finished difference Result 1290 states and 2202 transitions. [2023-12-15 22:36:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 22:36:36,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2023-12-15 22:36:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:36,294 INFO L225 Difference]: With dead ends: 1290 [2023-12-15 22:36:36,294 INFO L226 Difference]: Without dead ends: 723 [2023-12-15 22:36:36,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:36:36,304 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 696 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 3288 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 3418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:36,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 678 Invalid, 3418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [130 Valid, 3288 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-15 22:36:36,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2023-12-15 22:36:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 563. [2023-12-15 22:36:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 436 states have (on average 1.7110091743119267) internal successors, (746), 457 states have internal predecessors, (746), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-15 22:36:36,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 943 transitions. [2023-12-15 22:36:36,437 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 943 transitions. Word has length 72 [2023-12-15 22:36:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:36,437 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 943 transitions. [2023-12-15 22:36:36,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:36,437 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 943 transitions. [2023-12-15 22:36:36,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-15 22:36:36,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:36,440 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:36,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 22:36:36,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:36,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:36,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1280637874, now seen corresponding path program 1 times [2023-12-15 22:36:36,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:36,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996180354] [2023-12-15 22:36:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:36,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:36,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:36,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:36,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:36,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-15 22:36:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:36,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:36,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:36,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 22:36:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:37,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:37,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:37,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 22:36:37,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:37,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996180354] [2023-12-15 22:36:37,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996180354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:37,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:36:37,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 22:36:37,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83199725] [2023-12-15 22:36:37,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:37,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:36:37,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:37,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:36:37,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:36:37,022 INFO L87 Difference]: Start difference. First operand 563 states and 943 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:41,222 INFO L93 Difference]: Finished difference Result 1283 states and 2174 transitions. [2023-12-15 22:36:41,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 22:36:41,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 75 [2023-12-15 22:36:41,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:41,227 INFO L225 Difference]: With dead ends: 1283 [2023-12-15 22:36:41,227 INFO L226 Difference]: Without dead ends: 723 [2023-12-15 22:36:41,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:36:41,232 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1154 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 3105 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 3384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 3105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:41,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 666 Invalid, 3384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 3105 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-15 22:36:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2023-12-15 22:36:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 563. [2023-12-15 22:36:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 436 states have (on average 1.7087155963302751) internal successors, (745), 457 states have internal predecessors, (745), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-15 22:36:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 942 transitions. [2023-12-15 22:36:41,316 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 942 transitions. Word has length 75 [2023-12-15 22:36:41,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:41,316 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 942 transitions. [2023-12-15 22:36:41,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:41,316 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 942 transitions. [2023-12-15 22:36:41,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-15 22:36:41,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:41,318 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:41,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 22:36:41,318 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:41,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:41,318 INFO L85 PathProgramCache]: Analyzing trace with hash 98689300, now seen corresponding path program 1 times [2023-12-15 22:36:41,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:41,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712671085] [2023-12-15 22:36:41,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:41,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:41,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:41,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:41,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:41,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 22:36:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:41,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:41,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 22:36:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:41,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:41,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:41,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 22:36:41,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:41,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712671085] [2023-12-15 22:36:41,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712671085] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:41,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647366628] [2023-12-15 22:36:41,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:41,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:41,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:41,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:41,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 22:36:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:42,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 22:36:42,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 22:36:42,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:42,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647366628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:42,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:42,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-15 22:36:42,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818309442] [2023-12-15 22:36:42,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:42,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 22:36:42,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:42,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 22:36:42,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:36:42,156 INFO L87 Difference]: Start difference. First operand 563 states and 942 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:42,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:42,282 INFO L93 Difference]: Finished difference Result 1130 states and 1891 transitions. [2023-12-15 22:36:42,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:36:42,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 77 [2023-12-15 22:36:42,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:42,286 INFO L225 Difference]: With dead ends: 1130 [2023-12-15 22:36:42,286 INFO L226 Difference]: Without dead ends: 572 [2023-12-15 22:36:42,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:36:42,288 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 20 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:42,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2744 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:36:42,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-12-15 22:36:42,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2023-12-15 22:36:42,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 444 states have (on average 1.704954954954955) internal successors, (757), 465 states have internal predecessors, (757), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-15 22:36:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 954 transitions. [2023-12-15 22:36:42,339 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 954 transitions. Word has length 77 [2023-12-15 22:36:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:42,339 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 954 transitions. [2023-12-15 22:36:42,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 954 transitions. [2023-12-15 22:36:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 22:36:42,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:42,341 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:42,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:42,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:42,551 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:42,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:42,552 INFO L85 PathProgramCache]: Analyzing trace with hash 484120412, now seen corresponding path program 1 times [2023-12-15 22:36:42,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:42,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81761070] [2023-12-15 22:36:42,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:42,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:42,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:42,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:42,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 22:36:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:42,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 22:36:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:42,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:42,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:43,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-15 22:36:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:43,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:43,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:43,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:43,038 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 22:36:43,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:43,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81761070] [2023-12-15 22:36:43,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81761070] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:43,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505811650] [2023-12-15 22:36:43,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:43,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:43,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:43,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:43,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 22:36:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:43,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 22:36:43,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 22:36:43,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:43,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505811650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:43,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:43,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-15 22:36:43,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929839447] [2023-12-15 22:36:43,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:43,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 22:36:43,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:43,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 22:36:43,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:36:43,349 INFO L87 Difference]: Start difference. First operand 572 states and 954 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:43,465 INFO L93 Difference]: Finished difference Result 1132 states and 1892 transitions. [2023-12-15 22:36:43,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:36:43,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2023-12-15 22:36:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:43,469 INFO L225 Difference]: With dead ends: 1132 [2023-12-15 22:36:43,469 INFO L226 Difference]: Without dead ends: 572 [2023-12-15 22:36:43,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:36:43,473 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 18 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:43,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2744 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:36:43,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-12-15 22:36:43,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2023-12-15 22:36:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 444 states have (on average 1.7027027027027026) internal successors, (756), 465 states have internal predecessors, (756), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-15 22:36:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 953 transitions. [2023-12-15 22:36:43,530 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 953 transitions. Word has length 78 [2023-12-15 22:36:43,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:43,530 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 953 transitions. [2023-12-15 22:36:43,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:43,531 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 953 transitions. [2023-12-15 22:36:43,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-15 22:36:43,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:43,532 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:43,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:43,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-15 22:36:43,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:43,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:43,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1437669352, now seen corresponding path program 1 times [2023-12-15 22:36:43,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:43,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438644266] [2023-12-15 22:36:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:43,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:43,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:43,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:43,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 22:36:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 22:36:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:43,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:44,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:44,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 22:36:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:44,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:44,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:44,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 22:36:44,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:44,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438644266] [2023-12-15 22:36:44,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438644266] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:44,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28660785] [2023-12-15 22:36:44,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:44,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:44,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:44,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:44,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 22:36:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:44,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 22:36:44,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 22:36:44,593 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:44,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28660785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:44,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:44,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-15 22:36:44,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101774581] [2023-12-15 22:36:44,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:44,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 22:36:44,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:44,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 22:36:44,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:36:44,594 INFO L87 Difference]: Start difference. First operand 572 states and 953 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:44,695 INFO L93 Difference]: Finished difference Result 1132 states and 1891 transitions. [2023-12-15 22:36:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:36:44,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2023-12-15 22:36:44,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:44,697 INFO L225 Difference]: With dead ends: 1132 [2023-12-15 22:36:44,697 INFO L226 Difference]: Without dead ends: 572 [2023-12-15 22:36:44,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:36:44,700 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 17 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:44,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2744 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:36:44,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-12-15 22:36:44,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2023-12-15 22:36:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 444 states have (on average 1.7004504504504505) internal successors, (755), 465 states have internal predecessors, (755), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-15 22:36:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 952 transitions. [2023-12-15 22:36:44,757 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 952 transitions. Word has length 79 [2023-12-15 22:36:44,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:44,757 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 952 transitions. [2023-12-15 22:36:44,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:44,757 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 952 transitions. [2023-12-15 22:36:44,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 22:36:44,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:44,758 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:44,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:44,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:44,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:44,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:44,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1868862240, now seen corresponding path program 1 times [2023-12-15 22:36:44,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:44,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587438832] [2023-12-15 22:36:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:44,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:45,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:45,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:45,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:36:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:45,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 22:36:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:45,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:45,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:45,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 22:36:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:45,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:45,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:45,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 22:36:45,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:45,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587438832] [2023-12-15 22:36:45,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587438832] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:45,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466557923] [2023-12-15 22:36:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:45,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:45,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:45,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:45,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 22:36:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:45,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 22:36:45,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 22:36:45,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:45,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466557923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:45,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:45,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-12-15 22:36:45,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636106781] [2023-12-15 22:36:45,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:45,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:36:45,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:36:45,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-15 22:36:45,849 INFO L87 Difference]: Start difference. First operand 572 states and 952 transitions. Second operand has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 22:36:46,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:46,018 INFO L93 Difference]: Finished difference Result 1150 states and 1920 transitions. [2023-12-15 22:36:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 22:36:46,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 80 [2023-12-15 22:36:46,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:46,022 INFO L225 Difference]: With dead ends: 1150 [2023-12-15 22:36:46,022 INFO L226 Difference]: Without dead ends: 594 [2023-12-15 22:36:46,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-15 22:36:46,025 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 146 mSDsluCounter, 4484 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 5402 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:46,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 5402 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:36:46,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-12-15 22:36:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 590. [2023-12-15 22:36:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 459 states have (on average 1.6993464052287581) internal successors, (780), 482 states have internal predecessors, (780), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2023-12-15 22:36:46,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 982 transitions. [2023-12-15 22:36:46,076 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 982 transitions. Word has length 80 [2023-12-15 22:36:46,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:46,076 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 982 transitions. [2023-12-15 22:36:46,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 22:36:46,077 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 982 transitions. [2023-12-15 22:36:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 22:36:46,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:46,078 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:46,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:46,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:46,290 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:46,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:46,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2115175327, now seen corresponding path program 1 times [2023-12-15 22:36:46,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:46,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262414058] [2023-12-15 22:36:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:46,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:46,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:46,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:46,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:36:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:46,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 22:36:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:46,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:46,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:46,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 22:36:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:46,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:46,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:46,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 22:36:46,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:46,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262414058] [2023-12-15 22:36:46,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262414058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:46,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283943244] [2023-12-15 22:36:46,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:46,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:46,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:46,780 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:46,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 22:36:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:47,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 22:36:47,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:47,074 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 22:36:47,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:47,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283943244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:47,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:47,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-15 22:36:47,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176135919] [2023-12-15 22:36:47,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:47,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 22:36:47,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:47,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 22:36:47,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:36:47,076 INFO L87 Difference]: Start difference. First operand 590 states and 982 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:47,220 INFO L93 Difference]: Finished difference Result 1188 states and 1991 transitions. [2023-12-15 22:36:47,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 22:36:47,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2023-12-15 22:36:47,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:47,223 INFO L225 Difference]: With dead ends: 1188 [2023-12-15 22:36:47,223 INFO L226 Difference]: Without dead ends: 590 [2023-12-15 22:36:47,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:36:47,226 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 133 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:47,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 2563 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:36:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-12-15 22:36:47,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2023-12-15 22:36:47,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 459 states have (on average 1.6884531590413943) internal successors, (775), 482 states have internal predecessors, (775), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2023-12-15 22:36:47,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 977 transitions. [2023-12-15 22:36:47,276 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 977 transitions. Word has length 80 [2023-12-15 22:36:47,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:47,277 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 977 transitions. [2023-12-15 22:36:47,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:47,277 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 977 transitions. [2023-12-15 22:36:47,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 22:36:47,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:47,278 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:47,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:47,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:47,487 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:47,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:47,487 INFO L85 PathProgramCache]: Analyzing trace with hash -559894315, now seen corresponding path program 1 times [2023-12-15 22:36:47,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:47,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132697321] [2023-12-15 22:36:47,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:47,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:47,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:47,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:47,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:36:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:47,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:36:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:47,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:47,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:47,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 22:36:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:47,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:47,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:47,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 22:36:47,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:47,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132697321] [2023-12-15 22:36:47,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132697321] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:47,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168786634] [2023-12-15 22:36:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:47,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:47,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:47,958 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:47,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 22:36:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:48,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 22:36:48,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 22:36:48,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:48,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168786634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:48,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:48,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-15 22:36:48,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201942435] [2023-12-15 22:36:48,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:48,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 22:36:48,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:48,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 22:36:48,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:36:48,258 INFO L87 Difference]: Start difference. First operand 590 states and 977 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:48,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:48,396 INFO L93 Difference]: Finished difference Result 1188 states and 1981 transitions. [2023-12-15 22:36:48,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 22:36:48,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 82 [2023-12-15 22:36:48,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:48,399 INFO L225 Difference]: With dead ends: 1188 [2023-12-15 22:36:48,399 INFO L226 Difference]: Without dead ends: 590 [2023-12-15 22:36:48,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:36:48,401 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 127 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:48,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2563 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:36:48,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-12-15 22:36:48,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2023-12-15 22:36:48,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 459 states have (on average 1.6775599128540306) internal successors, (770), 482 states have internal predecessors, (770), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2023-12-15 22:36:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 972 transitions. [2023-12-15 22:36:48,450 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 972 transitions. Word has length 82 [2023-12-15 22:36:48,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:48,451 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 972 transitions. [2023-12-15 22:36:48,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:48,451 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 972 transitions. [2023-12-15 22:36:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-15 22:36:48,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:48,452 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:48,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:48,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:48,661 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:48,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:48,661 INFO L85 PathProgramCache]: Analyzing trace with hash 970306583, now seen corresponding path program 1 times [2023-12-15 22:36:48,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:48,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504875112] [2023-12-15 22:36:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:48,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:48,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:48,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:48,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:36:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:48,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 22:36:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:48,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:49,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 22:36:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:49,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:49,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 22:36:49,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:49,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504875112] [2023-12-15 22:36:49,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504875112] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:49,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835314989] [2023-12-15 22:36:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:49,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:49,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:49,126 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:49,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 22:36:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:49,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 22:36:49,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 22:36:49,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:49,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835314989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:49,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:49,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-15 22:36:49,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139784677] [2023-12-15 22:36:49,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:49,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 22:36:49,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:49,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 22:36:49,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:36:49,399 INFO L87 Difference]: Start difference. First operand 590 states and 972 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:49,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:49,546 INFO L93 Difference]: Finished difference Result 1224 states and 2029 transitions. [2023-12-15 22:36:49,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:36:49,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2023-12-15 22:36:49,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:49,550 INFO L225 Difference]: With dead ends: 1224 [2023-12-15 22:36:49,550 INFO L226 Difference]: Without dead ends: 654 [2023-12-15 22:36:49,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:36:49,552 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 177 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:49,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2573 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:36:49,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2023-12-15 22:36:49,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 640. [2023-12-15 22:36:49,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 508 states have (on average 1.6811023622047243) internal successors, (854), 531 states have internal predecessors, (854), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2023-12-15 22:36:49,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1055 transitions. [2023-12-15 22:36:49,602 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1055 transitions. Word has length 84 [2023-12-15 22:36:49,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:49,602 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 1055 transitions. [2023-12-15 22:36:49,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:49,603 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1055 transitions. [2023-12-15 22:36:49,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 22:36:49,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:49,603 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:49,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:49,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:49,811 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:49,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:49,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2039969795, now seen corresponding path program 1 times [2023-12-15 22:36:49,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:49,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554868816] [2023-12-15 22:36:49,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:49,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:50,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:50,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:50,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:36:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:50,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:36:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:50,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:50,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-15 22:36:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:50,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:50,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 22:36:50,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:50,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554868816] [2023-12-15 22:36:50,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554868816] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:50,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089664508] [2023-12-15 22:36:50,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:50,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:50,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:50,354 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:50,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 22:36:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:50,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 22:36:50,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 22:36:50,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:50,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089664508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:50,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:50,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-12-15 22:36:50,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713820429] [2023-12-15 22:36:50,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:50,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 22:36:50,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:50,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 22:36:50,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-15 22:36:50,699 INFO L87 Difference]: Start difference. First operand 640 states and 1055 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 22:36:50,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:50,874 INFO L93 Difference]: Finished difference Result 1216 states and 2009 transitions. [2023-12-15 22:36:50,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:36:50,874 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2023-12-15 22:36:50,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:50,877 INFO L225 Difference]: With dead ends: 1216 [2023-12-15 22:36:50,877 INFO L226 Difference]: Without dead ends: 660 [2023-12-15 22:36:50,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-15 22:36:50,880 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 171 mSDsluCounter, 5290 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 6188 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:50,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 6188 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:36:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-15 22:36:50,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 640. [2023-12-15 22:36:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 508 states have (on average 1.6811023622047243) internal successors, (854), 531 states have internal predecessors, (854), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2023-12-15 22:36:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1055 transitions. [2023-12-15 22:36:50,948 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1055 transitions. Word has length 85 [2023-12-15 22:36:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:50,948 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 1055 transitions. [2023-12-15 22:36:50,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 22:36:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1055 transitions. [2023-12-15 22:36:50,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 22:36:50,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:50,949 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:50,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:51,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 22:36:51,160 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:51,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:51,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1546325277, now seen corresponding path program 1 times [2023-12-15 22:36:51,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:51,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459975602] [2023-12-15 22:36:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:51,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:51,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:51,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:36:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:51,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:36:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:51,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:51,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:51,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-15 22:36:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:51,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:51,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:51,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 22:36:51,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:51,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459975602] [2023-12-15 22:36:51,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459975602] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:51,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989976348] [2023-12-15 22:36:51,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:51,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:51,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:51,642 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:51,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 22:36:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:51,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 22:36:51,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 22:36:51,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:51,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989976348] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:51,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:51,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-15 22:36:51,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562981270] [2023-12-15 22:36:51,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:51,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 22:36:51,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:51,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 22:36:51,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:36:51,967 INFO L87 Difference]: Start difference. First operand 640 states and 1055 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:52,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:52,139 INFO L93 Difference]: Finished difference Result 1224 states and 2027 transitions. [2023-12-15 22:36:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:36:52,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2023-12-15 22:36:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:52,142 INFO L225 Difference]: With dead ends: 1224 [2023-12-15 22:36:52,142 INFO L226 Difference]: Without dead ends: 640 [2023-12-15 22:36:52,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:36:52,144 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 171 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:52,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2573 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:36:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-12-15 22:36:52,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2023-12-15 22:36:52,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 508 states have (on average 1.671259842519685) internal successors, (849), 531 states have internal predecessors, (849), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2023-12-15 22:36:52,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1050 transitions. [2023-12-15 22:36:52,193 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1050 transitions. Word has length 85 [2023-12-15 22:36:52,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:52,194 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 1050 transitions. [2023-12-15 22:36:52,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:52,194 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1050 transitions. [2023-12-15 22:36:52,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 22:36:52,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:52,195 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:52,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:52,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:52,402 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:52,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:52,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1596358372, now seen corresponding path program 1 times [2023-12-15 22:36:52,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:52,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918185468] [2023-12-15 22:36:52,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:52,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:52,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:52,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:36:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:52,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:36:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:52,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:52,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:52,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-15 22:36:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:52,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:52,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:52,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:52,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:36:52,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:52,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918185468] [2023-12-15 22:36:52,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918185468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:52,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97224252] [2023-12-15 22:36:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:52,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:52,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:52,883 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:52,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 22:36:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:53,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 22:36:53,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 22:36:53,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:53,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97224252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:53,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:53,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-15 22:36:53,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960480287] [2023-12-15 22:36:53,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:53,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:36:53,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:53,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:36:53,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:36:53,193 INFO L87 Difference]: Start difference. First operand 640 states and 1050 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 22:36:53,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:53,359 INFO L93 Difference]: Finished difference Result 1152 states and 1902 transitions. [2023-12-15 22:36:53,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 22:36:53,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2023-12-15 22:36:53,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:53,363 INFO L225 Difference]: With dead ends: 1152 [2023-12-15 22:36:53,363 INFO L226 Difference]: Without dead ends: 662 [2023-12-15 22:36:53,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-15 22:36:53,365 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 132 mSDsluCounter, 4451 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 5361 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:53,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 5361 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:36:53,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-12-15 22:36:53,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 658. [2023-12-15 22:36:53,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 523 states have (on average 1.6711281070745698) internal successors, (874), 548 states have internal predecessors, (874), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2023-12-15 22:36:53,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1079 transitions. [2023-12-15 22:36:53,416 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1079 transitions. Word has length 85 [2023-12-15 22:36:53,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:53,416 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1079 transitions. [2023-12-15 22:36:53,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 22:36:53,416 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1079 transitions. [2023-12-15 22:36:53,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 22:36:53,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:53,418 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:53,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:53,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 22:36:53,624 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:53,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:53,625 INFO L85 PathProgramCache]: Analyzing trace with hash 470717845, now seen corresponding path program 1 times [2023-12-15 22:36:53,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:53,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430078783] [2023-12-15 22:36:53,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:53,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:53,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:53,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:53,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:36:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:53,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:36:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:53,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:53,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:54,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 22:36:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:54,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:54,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:54,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:36:54,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:54,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430078783] [2023-12-15 22:36:54,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430078783] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:54,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268217540] [2023-12-15 22:36:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:54,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:54,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:54,164 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:54,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 22:36:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:54,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 22:36:54,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 22:36:54,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:54,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268217540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:54,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:54,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-15 22:36:54,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970252460] [2023-12-15 22:36:54,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:54,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:36:54,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:54,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:36:54,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:36:54,499 INFO L87 Difference]: Start difference. First operand 658 states and 1079 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 22:36:54,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:54,667 INFO L93 Difference]: Finished difference Result 1180 states and 1951 transitions. [2023-12-15 22:36:54,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 22:36:54,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2023-12-15 22:36:54,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:54,670 INFO L225 Difference]: With dead ends: 1180 [2023-12-15 22:36:54,670 INFO L226 Difference]: Without dead ends: 690 [2023-12-15 22:36:54,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-15 22:36:54,673 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 141 mSDsluCounter, 4441 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 5351 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:54,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 5351 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:36:54,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2023-12-15 22:36:54,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 658. [2023-12-15 22:36:54,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 523 states have (on average 1.6711281070745698) internal successors, (874), 548 states have internal predecessors, (874), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2023-12-15 22:36:54,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1079 transitions. [2023-12-15 22:36:54,730 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1079 transitions. Word has length 86 [2023-12-15 22:36:54,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:54,731 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1079 transitions. [2023-12-15 22:36:54,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 22:36:54,731 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1079 transitions. [2023-12-15 22:36:54,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 22:36:54,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:54,732 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:54,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:54,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 22:36:54,938 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:54,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:54,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1093896469, now seen corresponding path program 1 times [2023-12-15 22:36:54,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:54,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826808435] [2023-12-15 22:36:54,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:54,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:55,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:55,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:55,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:36:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:55,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:36:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:55,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:55,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:55,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 22:36:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:55,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:55,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:55,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:36:55,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:55,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826808435] [2023-12-15 22:36:55,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826808435] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:55,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501426089] [2023-12-15 22:36:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:55,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:55,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:55,519 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:55,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 22:36:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:55,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 22:36:55,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 22:36:55,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:55,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501426089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:55,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:55,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-15 22:36:55,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914619079] [2023-12-15 22:36:55,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:55,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 22:36:55,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:55,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 22:36:55,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-12-15 22:36:55,857 INFO L87 Difference]: Start difference. First operand 658 states and 1079 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 22:36:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:56,060 INFO L93 Difference]: Finished difference Result 1166 states and 1926 transitions. [2023-12-15 22:36:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:36:56,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2023-12-15 22:36:56,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:56,064 INFO L225 Difference]: With dead ends: 1166 [2023-12-15 22:36:56,064 INFO L226 Difference]: Without dead ends: 676 [2023-12-15 22:36:56,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-15 22:36:56,066 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 171 mSDsluCounter, 5296 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 6196 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:56,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 6196 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:36:56,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-12-15 22:36:56,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 658. [2023-12-15 22:36:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 523 states have (on average 1.6711281070745698) internal successors, (874), 548 states have internal predecessors, (874), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2023-12-15 22:36:56,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1079 transitions. [2023-12-15 22:36:56,119 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1079 transitions. Word has length 86 [2023-12-15 22:36:56,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:56,120 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1079 transitions. [2023-12-15 22:36:56,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 22:36:56,120 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1079 transitions. [2023-12-15 22:36:56,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 22:36:56,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:56,121 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:56,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:56,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-15 22:36:56,328 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:56,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:56,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1808081316, now seen corresponding path program 1 times [2023-12-15 22:36:56,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:56,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342308021] [2023-12-15 22:36:56,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:56,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:56,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:56,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:36:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:56,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:36:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:56,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:56,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 22:36:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:56,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 22:36:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:56,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:56,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:56,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 22:36:56,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:56,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342308021] [2023-12-15 22:36:56,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342308021] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:56,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505415452] [2023-12-15 22:36:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:56,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:56,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:56,812 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:56,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 22:36:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:57,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 22:36:57,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 22:36:57,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:57,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505415452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:57,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:57,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-15 22:36:57,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516744599] [2023-12-15 22:36:57,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:57,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 22:36:57,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:57,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 22:36:57,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-15 22:36:57,078 INFO L87 Difference]: Start difference. First operand 658 states and 1079 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:57,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:57,188 INFO L93 Difference]: Finished difference Result 1218 states and 2011 transitions. [2023-12-15 22:36:57,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:36:57,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2023-12-15 22:36:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:57,190 INFO L225 Difference]: With dead ends: 1218 [2023-12-15 22:36:57,191 INFO L226 Difference]: Without dead ends: 658 [2023-12-15 22:36:57,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-15 22:36:57,196 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 23 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:57,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2713 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:36:57,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2023-12-15 22:36:57,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2023-12-15 22:36:57,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 523 states have (on average 1.6634799235181645) internal successors, (870), 548 states have internal predecessors, (870), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2023-12-15 22:36:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1075 transitions. [2023-12-15 22:36:57,247 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1075 transitions. Word has length 86 [2023-12-15 22:36:57,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:57,247 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1075 transitions. [2023-12-15 22:36:57,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:57,247 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1075 transitions. [2023-12-15 22:36:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-15 22:36:57,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:57,248 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:57,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:57,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 22:36:57,455 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:57,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:57,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1584681508, now seen corresponding path program 1 times [2023-12-15 22:36:57,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:57,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859413478] [2023-12-15 22:36:57,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:57,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:57,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:57,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:57,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:36:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:57,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:36:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:57,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:57,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 22:36:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:57,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:57,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:36:57,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:57,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859413478] [2023-12-15 22:36:57,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859413478] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:57,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361662111] [2023-12-15 22:36:57,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:57,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:57,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:57,942 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:57,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 22:36:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:58,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 22:36:58,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 22:36:58,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:58,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361662111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:58,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:58,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-15 22:36:58,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455872908] [2023-12-15 22:36:58,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:58,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 22:36:58,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:58,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 22:36:58,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-12-15 22:36:58,264 INFO L87 Difference]: Start difference. First operand 658 states and 1075 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 22:36:58,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:58,463 INFO L93 Difference]: Finished difference Result 1166 states and 1923 transitions. [2023-12-15 22:36:58,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:36:58,463 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2023-12-15 22:36:58,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:58,466 INFO L225 Difference]: With dead ends: 1166 [2023-12-15 22:36:58,466 INFO L226 Difference]: Without dead ends: 676 [2023-12-15 22:36:58,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-15 22:36:58,468 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 179 mSDsluCounter, 5258 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:58,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 6152 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:36:58,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-12-15 22:36:58,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 658. [2023-12-15 22:36:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 523 states have (on average 1.6634799235181645) internal successors, (870), 548 states have internal predecessors, (870), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2023-12-15 22:36:58,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1075 transitions. [2023-12-15 22:36:58,518 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1075 transitions. Word has length 87 [2023-12-15 22:36:58,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:58,518 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1075 transitions. [2023-12-15 22:36:58,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 22:36:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1075 transitions. [2023-12-15 22:36:58,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-15 22:36:58,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:58,519 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:58,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:58,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:58,726 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:58,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:58,726 INFO L85 PathProgramCache]: Analyzing trace with hash 780715216, now seen corresponding path program 1 times [2023-12-15 22:36:58,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:58,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482235980] [2023-12-15 22:36:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:58,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:58,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:36:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:58,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:58,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:36:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:58,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:36:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:58,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:36:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:59,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 22:36:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:59,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:36:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:59,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:36:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:36:59,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:36:59,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482235980] [2023-12-15 22:36:59,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482235980] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:36:59,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839850036] [2023-12-15 22:36:59,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:59,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:36:59,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:36:59,216 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:36:59,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 22:36:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:36:59,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 22:36:59,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:36:59,479 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-15 22:36:59,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:36:59,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839850036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:36:59,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:36:59,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-15 22:36:59,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997740199] [2023-12-15 22:36:59,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:36:59,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 22:36:59,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:36:59,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 22:36:59,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-15 22:36:59,481 INFO L87 Difference]: Start difference. First operand 658 states and 1075 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:59,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:36:59,584 INFO L93 Difference]: Finished difference Result 1264 states and 2081 transitions. [2023-12-15 22:36:59,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:36:59,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2023-12-15 22:36:59,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:36:59,587 INFO L225 Difference]: With dead ends: 1264 [2023-12-15 22:36:59,588 INFO L226 Difference]: Without dead ends: 686 [2023-12-15 22:36:59,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-15 22:36:59,590 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 14 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:36:59,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2692 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:36:59,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-12-15 22:36:59,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 682. [2023-12-15 22:36:59,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 547 states have (on average 1.6416819012797075) internal successors, (898), 572 states have internal predecessors, (898), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2023-12-15 22:36:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1103 transitions. [2023-12-15 22:36:59,654 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1103 transitions. Word has length 88 [2023-12-15 22:36:59,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:36:59,654 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 1103 transitions. [2023-12-15 22:36:59,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 22:36:59,654 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1103 transitions. [2023-12-15 22:36:59,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-15 22:36:59,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:36:59,656 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:36:59,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 22:36:59,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 22:36:59,862 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:36:59,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:36:59,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2135962409, now seen corresponding path program 1 times [2023-12-15 22:36:59,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:36:59,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801180355] [2023-12-15 22:36:59,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:36:59,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:36:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:00,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:00,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:00,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:37:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:00,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:00,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:00,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 22:37:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:00,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:00,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:37:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 22:37:00,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:37:00,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801180355] [2023-12-15 22:37:00,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801180355] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:37:00,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139027406] [2023-12-15 22:37:00,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:00,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:37:00,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:37:00,347 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:37:00,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 22:37:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:00,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 22:37:00,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:37:00,853 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:37:00,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:37:00,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139027406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:37:00,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:37:00,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2023-12-15 22:37:00,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241997316] [2023-12-15 22:37:00,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:37:00,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:37:00,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:37:00,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:37:00,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:37:00,855 INFO L87 Difference]: Start difference. First operand 682 states and 1103 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 22:37:03,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:37:03,486 INFO L93 Difference]: Finished difference Result 2227 states and 3712 transitions. [2023-12-15 22:37:03,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 22:37:03,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2023-12-15 22:37:03,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:37:03,494 INFO L225 Difference]: With dead ends: 2227 [2023-12-15 22:37:03,495 INFO L226 Difference]: Without dead ends: 1742 [2023-12-15 22:37:03,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-15 22:37:03,497 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 3974 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 3933 mSolverCounterSat, 738 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4156 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 4671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 3933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 22:37:03,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4156 Valid, 1729 Invalid, 4671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [738 Valid, 3933 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 22:37:03,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2023-12-15 22:37:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1555. [2023-12-15 22:37:03,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1233 states have (on average 1.6788321167883211) internal successors, (2070), 1276 states have internal predecessors, (2070), 256 states have call successors, (256), 60 states have call predecessors, (256), 65 states have return successors, (265), 233 states have call predecessors, (265), 251 states have call successors, (265) [2023-12-15 22:37:03,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2591 transitions. [2023-12-15 22:37:03,651 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2591 transitions. Word has length 88 [2023-12-15 22:37:03,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:37:03,651 INFO L495 AbstractCegarLoop]: Abstraction has 1555 states and 2591 transitions. [2023-12-15 22:37:03,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 22:37:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2591 transitions. [2023-12-15 22:37:03,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 22:37:03,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:37:03,655 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:37:03,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 22:37:03,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 22:37:03,865 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:37:03,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:37:03,865 INFO L85 PathProgramCache]: Analyzing trace with hash -560289121, now seen corresponding path program 1 times [2023-12-15 22:37:03,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:37:03,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705662985] [2023-12-15 22:37:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:03,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:37:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:37:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 22:37:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 22:37:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 22:37:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 22:37:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 22:37:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 22:37:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 22:37:04,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:37:04,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705662985] [2023-12-15 22:37:04,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705662985] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:37:04,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709725929] [2023-12-15 22:37:04,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:04,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:37:04,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:37:04,723 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:37:04,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 22:37:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:05,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 2066 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 22:37:05,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:37:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:37:05,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:37:05,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709725929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:37:05,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:37:05,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-12-15 22:37:05,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356538831] [2023-12-15 22:37:05,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:37:05,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 22:37:05,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:37:05,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 22:37:05,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-12-15 22:37:05,149 INFO L87 Difference]: Start difference. First operand 1555 states and 2591 transitions. Second operand has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-15 22:37:07,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:37:07,682 INFO L93 Difference]: Finished difference Result 4148 states and 6969 transitions. [2023-12-15 22:37:07,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 22:37:07,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 126 [2023-12-15 22:37:07,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:37:07,693 INFO L225 Difference]: With dead ends: 4148 [2023-12-15 22:37:07,693 INFO L226 Difference]: Without dead ends: 2628 [2023-12-15 22:37:07,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2023-12-15 22:37:07,698 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 1745 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 5197 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 5481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 5197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:37:07,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1827 Valid, 2042 Invalid, 5481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 5197 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 22:37:07,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2023-12-15 22:37:07,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 2416. [2023-12-15 22:37:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 1887 states have (on average 1.6624271330153684) internal successors, (3137), 1939 states have internal predecessors, (3137), 420 states have call successors, (420), 89 states have call predecessors, (420), 108 states have return successors, (463), 398 states have call predecessors, (463), 415 states have call successors, (463) [2023-12-15 22:37:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 4020 transitions. [2023-12-15 22:37:07,938 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 4020 transitions. Word has length 126 [2023-12-15 22:37:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:37:07,938 INFO L495 AbstractCegarLoop]: Abstraction has 2416 states and 4020 transitions. [2023-12-15 22:37:07,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-15 22:37:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 4020 transitions. [2023-12-15 22:37:07,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-15 22:37:07,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:37:07,941 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:37:07,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 22:37:08,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:37:08,149 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:37:08,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:37:08,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1818857211, now seen corresponding path program 1 times [2023-12-15 22:37:08,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:37:08,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127120412] [2023-12-15 22:37:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:08,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:37:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:37:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 22:37:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 22:37:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 22:37:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 22:37:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 22:37:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-15 22:37:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 22:37:08,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:37:08,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127120412] [2023-12-15 22:37:08,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127120412] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:37:08,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152341485] [2023-12-15 22:37:08,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:08,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:37:08,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:37:08,862 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:37:08,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-15 22:37:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:09,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 2066 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 22:37:09,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:37:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 22:37:09,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:37:09,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152341485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:37:09,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:37:09,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-15 22:37:09,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399760052] [2023-12-15 22:37:09,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:37:09,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 22:37:09,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:37:09,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 22:37:09,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:37:09,210 INFO L87 Difference]: Start difference. First operand 2416 states and 4020 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-15 22:37:09,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:37:09,600 INFO L93 Difference]: Finished difference Result 4917 states and 8262 transitions. [2023-12-15 22:37:09,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:37:09,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2023-12-15 22:37:09,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:37:09,611 INFO L225 Difference]: With dead ends: 4917 [2023-12-15 22:37:09,611 INFO L226 Difference]: Without dead ends: 2699 [2023-12-15 22:37:09,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-12-15 22:37:09,619 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 210 mSDsluCounter, 2749 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 3678 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:37:09,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 3678 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:37:09,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2023-12-15 22:37:09,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2425. [2023-12-15 22:37:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 1896 states have (on average 1.659282700421941) internal successors, (3146), 1948 states have internal predecessors, (3146), 420 states have call successors, (420), 89 states have call predecessors, (420), 108 states have return successors, (463), 398 states have call predecessors, (463), 415 states have call successors, (463) [2023-12-15 22:37:09,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 4029 transitions. [2023-12-15 22:37:09,878 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 4029 transitions. Word has length 127 [2023-12-15 22:37:09,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:37:09,878 INFO L495 AbstractCegarLoop]: Abstraction has 2425 states and 4029 transitions. [2023-12-15 22:37:09,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-15 22:37:09,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 4029 transitions. [2023-12-15 22:37:09,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-15 22:37:09,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:37:09,882 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:37:09,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-15 22:37:10,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:37:10,092 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:37:10,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:37:10,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1035664330, now seen corresponding path program 1 times [2023-12-15 22:37:10,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:37:10,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242064789] [2023-12-15 22:37:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:10,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:37:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:37:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 22:37:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 22:37:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 22:37:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:37:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 22:37:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 22:37:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 22:37:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 22:37:10,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:37:10,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242064789] [2023-12-15 22:37:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242064789] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:37:10,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602129949] [2023-12-15 22:37:10,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:10,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:37:10,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:37:10,841 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:37:10,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-15 22:37:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:11,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 2072 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 22:37:11,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:37:11,273 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-15 22:37:11,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:37:11,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602129949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:37:11,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:37:11,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2023-12-15 22:37:11,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440399239] [2023-12-15 22:37:11,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:37:11,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 22:37:11,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:37:11,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 22:37:11,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:37:11,275 INFO L87 Difference]: Start difference. First operand 2425 states and 4029 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 22:37:11,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:37:11,785 INFO L93 Difference]: Finished difference Result 2531 states and 4210 transitions. [2023-12-15 22:37:11,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:37:11,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2023-12-15 22:37:11,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:37:11,794 INFO L225 Difference]: With dead ends: 2531 [2023-12-15 22:37:11,794 INFO L226 Difference]: Without dead ends: 2516 [2023-12-15 22:37:11,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:37:11,795 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 858 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 22:37:11,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 2338 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 22:37:11,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2023-12-15 22:37:12,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 2431. [2023-12-15 22:37:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 1902 states have (on average 1.6572029442691902) internal successors, (3152), 1954 states have internal predecessors, (3152), 420 states have call successors, (420), 89 states have call predecessors, (420), 108 states have return successors, (463), 398 states have call predecessors, (463), 415 states have call successors, (463) [2023-12-15 22:37:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 4035 transitions. [2023-12-15 22:37:12,033 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 4035 transitions. Word has length 129 [2023-12-15 22:37:12,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:37:12,033 INFO L495 AbstractCegarLoop]: Abstraction has 2431 states and 4035 transitions. [2023-12-15 22:37:12,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 22:37:12,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 4035 transitions. [2023-12-15 22:37:12,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 22:37:12,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:37:12,037 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:37:12,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-15 22:37:12,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:37:12,247 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:37:12,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:37:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash -685362017, now seen corresponding path program 1 times [2023-12-15 22:37:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:37:12,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024934308] [2023-12-15 22:37:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:12,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:37:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:37:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 22:37:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 22:37:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 22:37:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:37:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 22:37:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 22:37:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 22:37:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-15 22:37:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 22:37:12,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:37:12,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024934308] [2023-12-15 22:37:12,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024934308] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:37:12,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091754835] [2023-12-15 22:37:12,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:12,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:37:12,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:37:12,982 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:37:12,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-15 22:37:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:13,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 2087 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 22:37:13,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:37:13,369 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-15 22:37:13,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:37:13,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091754835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:37:13,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:37:13,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-12-15 22:37:13,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790695623] [2023-12-15 22:37:13,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:37:13,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:37:13,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:37:13,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:37:13,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-15 22:37:13,370 INFO L87 Difference]: Start difference. First operand 2431 states and 4035 transitions. Second operand has 6 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 22:37:13,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:37:13,861 INFO L93 Difference]: Finished difference Result 2590 states and 4260 transitions. [2023-12-15 22:37:13,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 22:37:13,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 134 [2023-12-15 22:37:13,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:37:13,872 INFO L225 Difference]: With dead ends: 2590 [2023-12-15 22:37:13,872 INFO L226 Difference]: Without dead ends: 2575 [2023-12-15 22:37:13,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-12-15 22:37:13,874 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 904 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 3589 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 22:37:13,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 3589 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 22:37:13,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2023-12-15 22:37:14,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2521. [2023-12-15 22:37:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 1968 states have (on average 1.6504065040650406) internal successors, (3248), 2020 states have internal predecessors, (3248), 436 states have call successors, (436), 99 states have call predecessors, (436), 116 states have return successors, (482), 412 states have call predecessors, (482), 431 states have call successors, (482) [2023-12-15 22:37:14,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 4166 transitions. [2023-12-15 22:37:14,113 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 4166 transitions. Word has length 134 [2023-12-15 22:37:14,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:37:14,113 INFO L495 AbstractCegarLoop]: Abstraction has 2521 states and 4166 transitions. [2023-12-15 22:37:14,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 22:37:14,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 4166 transitions. [2023-12-15 22:37:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 22:37:14,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:37:14,117 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:37:14,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-15 22:37:14,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-15 22:37:14,324 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:37:14,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:37:14,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1095371642, now seen corresponding path program 1 times [2023-12-15 22:37:14,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:37:14,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882204090] [2023-12-15 22:37:14,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:14,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:37:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:14,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:14,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:14,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:14,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 22:37:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:14,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 22:37:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:14,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:14,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:15,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 22:37:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:15,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:15,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 22:37:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:15,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:37:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:15,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 22:37:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:15,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 22:37:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:15,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 22:37:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:15,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-15 22:37:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:15,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 22:37:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:15,106 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 22:37:15,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:37:15,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882204090] [2023-12-15 22:37:15,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882204090] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:37:15,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407964556] [2023-12-15 22:37:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:15,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:37:15,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:37:15,107 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:37:15,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-15 22:37:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:15,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 2119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 22:37:15,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:37:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 22:37:15,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:37:15,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407964556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:37:15,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:37:15,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-12-15 22:37:15,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474232959] [2023-12-15 22:37:15,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:37:15,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 22:37:15,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:37:15,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 22:37:15,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:37:15,426 INFO L87 Difference]: Start difference. First operand 2521 states and 4166 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-15 22:37:15,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:37:15,694 INFO L93 Difference]: Finished difference Result 5022 states and 8308 transitions. [2023-12-15 22:37:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:37:15,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 143 [2023-12-15 22:37:15,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:37:15,702 INFO L225 Difference]: With dead ends: 5022 [2023-12-15 22:37:15,702 INFO L226 Difference]: Without dead ends: 2491 [2023-12-15 22:37:15,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:37:15,709 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 11 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:37:15,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2715 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:37:15,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2023-12-15 22:37:15,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 2491. [2023-12-15 22:37:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2491 states, 1941 states have (on average 1.6501803194229778) internal successors, (3203), 1991 states have internal predecessors, (3203), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2023-12-15 22:37:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2491 states to 2491 states and 4117 transitions. [2023-12-15 22:37:15,987 INFO L78 Accepts]: Start accepts. Automaton has 2491 states and 4117 transitions. Word has length 143 [2023-12-15 22:37:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:37:15,987 INFO L495 AbstractCegarLoop]: Abstraction has 2491 states and 4117 transitions. [2023-12-15 22:37:15,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-15 22:37:15,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2491 states and 4117 transitions. [2023-12-15 22:37:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-15 22:37:15,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:37:15,990 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:37:15,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-15 22:37:16,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-15 22:37:16,197 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:37:16,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:37:16,197 INFO L85 PathProgramCache]: Analyzing trace with hash 2024498641, now seen corresponding path program 1 times [2023-12-15 22:37:16,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:37:16,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119866331] [2023-12-15 22:37:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:37:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 22:37:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-15 22:37:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 22:37:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 22:37:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:37:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 22:37:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 22:37:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 22:37:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-15 22:37:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 22:37:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-15 22:37:16,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:37:16,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119866331] [2023-12-15 22:37:16,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119866331] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:37:16,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933337894] [2023-12-15 22:37:16,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:16,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:37:16,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:37:16,933 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:37:16,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-15 22:37:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:17,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 2122 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 22:37:17,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:37:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 22:37:17,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:37:17,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933337894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:37:17,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:37:17,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-15 22:37:17,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746128025] [2023-12-15 22:37:17,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:37:17,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:37:17,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:37:17,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:37:17,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:37:17,300 INFO L87 Difference]: Start difference. First operand 2491 states and 4117 transitions. Second operand has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-15 22:37:17,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:37:17,589 INFO L93 Difference]: Finished difference Result 4956 states and 8203 transitions. [2023-12-15 22:37:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 22:37:17,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2023-12-15 22:37:17,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:37:17,597 INFO L225 Difference]: With dead ends: 4956 [2023-12-15 22:37:17,597 INFO L226 Difference]: Without dead ends: 2490 [2023-12-15 22:37:17,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:37:17,605 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 142 mSDsluCounter, 4455 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 5379 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:37:17,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 5379 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:37:17,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2023-12-15 22:37:17,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2470. [2023-12-15 22:37:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 1920 states have (on average 1.6505208333333334) internal successors, (3169), 1970 states have internal predecessors, (3169), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2023-12-15 22:37:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 4083 transitions. [2023-12-15 22:37:17,848 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 4083 transitions. Word has length 145 [2023-12-15 22:37:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:37:17,848 INFO L495 AbstractCegarLoop]: Abstraction has 2470 states and 4083 transitions. [2023-12-15 22:37:17,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-15 22:37:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 4083 transitions. [2023-12-15 22:37:17,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-15 22:37:17,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:37:17,851 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:37:17,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-15 22:37:18,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:37:18,058 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:37:18,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:37:18,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1352744428, now seen corresponding path program 1 times [2023-12-15 22:37:18,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:37:18,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257788064] [2023-12-15 22:37:18,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:18,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:37:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 22:37:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 22:37:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 22:37:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 22:37:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:37:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 22:37:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 22:37:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 22:37:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-15 22:37:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 22:37:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 22:37:18,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:37:18,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257788064] [2023-12-15 22:37:18,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257788064] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:37:18,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329866313] [2023-12-15 22:37:18,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:18,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:37:18,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:37:18,743 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:37:18,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-15 22:37:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:19,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 22:37:19,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:37:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 22:37:19,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:37:19,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329866313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:37:19,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:37:19,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-15 22:37:19,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71058682] [2023-12-15 22:37:19,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:37:19,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 22:37:19,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:37:19,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 22:37:19,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:37:19,069 INFO L87 Difference]: Start difference. First operand 2470 states and 4083 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-15 22:37:19,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:37:19,367 INFO L93 Difference]: Finished difference Result 4915 states and 8138 transitions. [2023-12-15 22:37:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:37:19,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 147 [2023-12-15 22:37:19,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:37:19,374 INFO L225 Difference]: With dead ends: 4915 [2023-12-15 22:37:19,374 INFO L226 Difference]: Without dead ends: 2470 [2023-12-15 22:37:19,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-15 22:37:19,379 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 174 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:37:19,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2550 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:37:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2023-12-15 22:37:19,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2470. [2023-12-15 22:37:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 1920 states have (on average 1.65) internal successors, (3168), 1970 states have internal predecessors, (3168), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2023-12-15 22:37:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 4082 transitions. [2023-12-15 22:37:19,598 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 4082 transitions. Word has length 147 [2023-12-15 22:37:19,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:37:19,598 INFO L495 AbstractCegarLoop]: Abstraction has 2470 states and 4082 transitions. [2023-12-15 22:37:19,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-15 22:37:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 4082 transitions. [2023-12-15 22:37:19,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-15 22:37:19,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:37:19,601 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:37:19,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-15 22:37:19,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:37:19,808 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:37:19,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:37:19,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1772292318, now seen corresponding path program 1 times [2023-12-15 22:37:19,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:37:19,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841724519] [2023-12-15 22:37:19,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:19,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:37:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:19,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:19,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:19,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:19,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 22:37:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 22:37:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 22:37:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 22:37:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:37:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 22:37:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 22:37:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 22:37:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-15 22:37:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 22:37:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 22:37:20,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:37:20,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841724519] [2023-12-15 22:37:20,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841724519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:37:20,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:37:20,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 22:37:20,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833647601] [2023-12-15 22:37:20,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:37:20,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 22:37:20,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:37:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 22:37:20,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:37:20,493 INFO L87 Difference]: Start difference. First operand 2470 states and 4082 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-15 22:37:26,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:37:26,203 INFO L93 Difference]: Finished difference Result 5751 states and 9659 transitions. [2023-12-15 22:37:26,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 22:37:26,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 148 [2023-12-15 22:37:26,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:37:26,214 INFO L225 Difference]: With dead ends: 5751 [2023-12-15 22:37:26,214 INFO L226 Difference]: Without dead ends: 3279 [2023-12-15 22:37:26,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:37:26,220 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 2399 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 3718 mSolverCounterSat, 657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2481 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 4375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 3718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-15 22:37:26,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2481 Valid, 1215 Invalid, 4375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [657 Valid, 3718 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-15 22:37:26,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2023-12-15 22:37:26,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2431. [2023-12-15 22:37:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 1884 states have (on average 1.648619957537155) internal successors, (3106), 1932 states have internal predecessors, (3106), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2023-12-15 22:37:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 4016 transitions. [2023-12-15 22:37:26,580 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 4016 transitions. Word has length 148 [2023-12-15 22:37:26,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:37:26,580 INFO L495 AbstractCegarLoop]: Abstraction has 2431 states and 4016 transitions. [2023-12-15 22:37:26,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-15 22:37:26,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 4016 transitions. [2023-12-15 22:37:26,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-15 22:37:26,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:37:26,583 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 22:37:26,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 22:37:26,583 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:37:26,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:37:26,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1051717698, now seen corresponding path program 1 times [2023-12-15 22:37:26,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:37:26,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297408537] [2023-12-15 22:37:26,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:37:26,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:37:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:26,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:26,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:26,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 22:37:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:26,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 22:37:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:26,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:37:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:27,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 22:37:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:27,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:27,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:37:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:27,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 22:37:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:27,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:37:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:27,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 22:37:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:27,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:37:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:27,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 22:37:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:27,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 22:37:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:27,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 22:37:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:27,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-15 22:37:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:27,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 22:37:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:37:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 22:37:27,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:37:27,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297408537] [2023-12-15 22:37:27,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297408537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:37:27,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:37:27,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 22:37:27,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351403600] [2023-12-15 22:37:27,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:37:27,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 22:37:27,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:37:27,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 22:37:27,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-15 22:37:27,352 INFO L87 Difference]: Start difference. First operand 2431 states and 4016 transitions. Second operand has 11 states, 10 states have (on average 10.6) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Received shutdown request... [2023-12-15 22:37:28,735 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 22:37:28,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 22:37:28,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-15 22:37:28,862 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 167 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 22:37:28,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 15 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 22:37:28,863 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 22:37:28,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 22:37:28,863 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (2431states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-57-1 term,while SimplifyDDA2 was simplifying 57 xjuncts wrt. a ATOM-1 context. [2023-12-15 22:37:28,866 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:37:28,868 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 22:37:28,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 10:37:28 BoogieIcfgContainer [2023-12-15 22:37:28,869 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 22:37:28,869 INFO L158 Benchmark]: Toolchain (without parser) took 60172.41ms. Allocated memory was 188.7MB in the beginning and 1.2GB in the end (delta: 994.1MB). Free memory was 139.4MB in the beginning and 766.3MB in the end (delta: -626.9MB). Peak memory consumption was 368.7MB. Max. memory is 8.0GB. [2023-12-15 22:37:28,869 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 22:37:28,869 INFO L158 Benchmark]: CACSL2BoogieTranslator took 552.49ms. Allocated memory is still 188.7MB. Free memory was 139.0MB in the beginning and 94.9MB in the end (delta: 44.2MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2023-12-15 22:37:28,870 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.88ms. Allocated memory is still 188.7MB. Free memory was 94.9MB in the beginning and 89.4MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 22:37:28,870 INFO L158 Benchmark]: Boogie Preprocessor took 125.61ms. Allocated memory was 188.7MB in the beginning and 251.7MB in the end (delta: 62.9MB). Free memory was 89.4MB in the beginning and 217.6MB in the end (delta: -128.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-15 22:37:28,870 INFO L158 Benchmark]: RCFGBuilder took 986.74ms. Allocated memory is still 251.7MB. Free memory was 217.6MB in the beginning and 114.8MB in the end (delta: 102.8MB). Peak memory consumption was 102.8MB. Max. memory is 8.0GB. [2023-12-15 22:37:28,870 INFO L158 Benchmark]: TraceAbstraction took 58427.49ms. Allocated memory was 251.7MB in the beginning and 1.2GB in the end (delta: 931.1MB). Free memory was 113.8MB in the beginning and 766.3MB in the end (delta: -652.5MB). Peak memory consumption was 278.6MB. Max. memory is 8.0GB. [2023-12-15 22:37:28,871 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 552.49ms. Allocated memory is still 188.7MB. Free memory was 139.0MB in the beginning and 94.9MB in the end (delta: 44.2MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 75.88ms. Allocated memory is still 188.7MB. Free memory was 94.9MB in the beginning and 89.4MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 125.61ms. Allocated memory was 188.7MB in the beginning and 251.7MB in the end (delta: 62.9MB). Free memory was 89.4MB in the beginning and 217.6MB in the end (delta: -128.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 986.74ms. Allocated memory is still 251.7MB. Free memory was 217.6MB in the beginning and 114.8MB in the end (delta: 102.8MB). Peak memory consumption was 102.8MB. Max. memory is 8.0GB. * TraceAbstraction took 58427.49ms. Allocated memory was 251.7MB in the beginning and 1.2GB in the end (delta: 931.1MB). Free memory was 113.8MB in the beginning and 766.3MB in the end (delta: -652.5MB). Peak memory consumption was 278.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 48]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] - GenericResultAtLocation [Line: 57]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [57] - GenericResultAtLocation [Line: 159]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [159] - GenericResultAtLocation [Line: 525]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [525] - GenericResultAtLocation [Line: 541]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [541] - GenericResultAtLocation [Line: 579]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [579] - GenericResultAtLocation [Line: 932]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [932] - GenericResultAtLocation [Line: 1604]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1604] - GenericResultAtLocation [Line: 1724]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1724] - GenericResultAtLocation [Line: 3302]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3302] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 53). Cancelled while NwaCegarLoop was constructing difference of abstraction (2431states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-57-1 term,while SimplifyDDA2 was simplifying 57 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 27 procedures, 567 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.4s, OverallIterations: 27, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 26.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14609 SdHoareTripleChecker+Valid, 18.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14074 mSDsluCounter, 85153 SdHoareTripleChecker+Invalid, 15.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64470 mSDsCounter, 2323 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23342 IncrementalHoareTripleChecker+Invalid, 25665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2323 mSolverCounterUnsat, 20683 mSDtfsCounter, 23342 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3183 GetRequests, 2881 SyntacticMatches, 0 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 16.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2521occurred in iteration=22, InterpolantAutomatonStates: 173, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 26 MinimizatonAttempts, 2114 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 5018 NumberOfCodeBlocks, 5018 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 4968 ConstructedInterpolants, 0 QuantifiedInterpolants, 30504 SizeOfPredicates, 46 NumberOfNonLiveVariables, 42180 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 50 InterpolantComputations, 27 PerfectInterpolantSequences, 643/831 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown