./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product23.cil.c --full-output --preprocessor.use.memory.slicer true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product23.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 21:29:40,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 21:29:40,880 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 21:29:40,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 21:29:40,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 21:29:40,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 21:29:40,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 21:29:40,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 21:29:40,909 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 21:29:40,909 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 21:29:40,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 21:29:40,910 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 21:29:40,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 21:29:40,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 21:29:40,910 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 21:29:40,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 21:29:40,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 21:29:40,911 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 21:29:40,912 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 21:29:40,912 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 21:29:40,912 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 21:29:40,915 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 21:29:40,915 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 21:29:40,916 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 21:29:40,918 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 21:29:40,918 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 21:29:40,918 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 21:29:40,920 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 21:29:40,920 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 21:29:40,920 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 21:29:40,921 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 21:29:40,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 21:29:40,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 21:29:40,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 21:29:40,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 21:29:40,922 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 21:29:40,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 21:29:40,922 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 21:29:40,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 21:29:40,922 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 21:29:40,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 21:29:40,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 21:29:40,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 21:29:41,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 21:29:41,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 21:29:41,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 21:29:41,138 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 21:29:41,138 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 21:29:41,139 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product23.cil.c [2023-11-22 21:29:42,121 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 21:29:42,366 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 21:29:42,367 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product23.cil.c [2023-11-22 21:29:42,388 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dbfe15e9/64bb5c8268aa46548217526f26766bb9/FLAG1e3d0dfa6 [2023-11-22 21:29:42,397 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dbfe15e9/64bb5c8268aa46548217526f26766bb9 [2023-11-22 21:29:42,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 21:29:42,400 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 21:29:42,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 21:29:42,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 21:29:42,406 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 21:29:42,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db5d407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42, skipping insertion in model container [2023-11-22 21:29:42,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,471 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 21:29:42,582 WARN L240 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_spec13_product23.cil.c[1811,1824] [2023-11-22 21:29:42,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 21:29:42,834 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 21:29:42,843 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-11-22 21:29:42,844 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [68] [2023-11-22 21:29:42,844 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [77] [2023-11-22 21:29:42,844 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [171] [2023-11-22 21:29:42,844 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [270] [2023-11-22 21:29:42,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1873] [2023-11-22 21:29:42,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1991] [2023-11-22 21:29:42,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2342] [2023-11-22 21:29:42,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2708] [2023-11-22 21:29:42,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2743] [2023-11-22 21:29:42,849 WARN L240 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_spec13_product23.cil.c[1811,1824] [2023-11-22 21:29:42,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 21:29:42,954 INFO L206 MainTranslator]: Completed translation [2023-11-22 21:29:42,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42 WrapperNode [2023-11-22 21:29:42,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 21:29:42,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 21:29:42,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 21:29:42,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 21:29:42,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:42,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:43,036 INFO L138 Inliner]: procedures = 94, calls = 346, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 872 [2023-11-22 21:29:43,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 21:29:43,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 21:29:43,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 21:29:43,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 21:29:43,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:43,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:43,058 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:43,092 INFO L189 HeapSplitter]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2] [2023-11-22 21:29:43,102 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:43,102 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:43,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:43,132 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:43,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:43,149 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:43,166 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 21:29:43,167 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 21:29:43,167 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 21:29:43,167 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 21:29:43,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (1/1) ... [2023-11-22 21:29:43,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 21:29:43,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:43,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 21:29:43,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 21:29:43,244 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-22 21:29:43,244 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-22 21:29:43,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 21:29:43,244 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-22 21:29:43,244 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-22 21:29:43,244 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-22 21:29:43,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-22 21:29:43,245 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-22 21:29:43,245 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-22 21:29:43,245 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-11-22 21:29:43,245 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-11-22 21:29:43,245 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-22 21:29:43,245 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-22 21:29:43,245 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-22 21:29:43,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-22 21:29:43,245 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-22 21:29:43,245 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-22 21:29:43,245 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-22 21:29:43,245 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-22 21:29:43,245 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-22 21:29:43,245 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-22 21:29:43,245 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-22 21:29:43,246 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-22 21:29:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-22 21:29:43,246 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-22 21:29:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-22 21:29:43,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-22 21:29:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-22 21:29:43,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-22 21:29:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-22 21:29:43,246 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-22 21:29:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-22 21:29:43,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-22 21:29:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-22 21:29:43,246 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-22 21:29:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-22 21:29:43,246 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-22 21:29:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-22 21:29:43,246 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-22 21:29:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-22 21:29:43,247 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-22 21:29:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-22 21:29:43,247 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-22 21:29:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-22 21:29:43,247 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-22 21:29:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 21:29:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 21:29:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 21:29:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 21:29:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 21:29:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-22 21:29:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-22 21:29:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-22 21:29:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-22 21:29:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-22 21:29:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-22 21:29:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-22 21:29:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-22 21:29:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-22 21:29:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-22 21:29:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-22 21:29:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-22 21:29:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-22 21:29:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-22 21:29:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-22 21:29:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-22 21:29:43,248 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-22 21:29:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-22 21:29:43,248 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-22 21:29:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-22 21:29:43,248 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-22 21:29:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-22 21:29:43,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-22 21:29:43,249 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-11-22 21:29:43,249 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-11-22 21:29:43,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 21:29:43,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 21:29:43,249 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-22 21:29:43,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-22 21:29:43,403 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 21:29:43,405 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 21:29:44,247 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 21:29:44,330 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 21:29:44,331 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-22 21:29:44,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:29:44 BoogieIcfgContainer [2023-11-22 21:29:44,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 21:29:44,334 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 21:29:44,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 21:29:44,336 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 21:29:44,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:29:42" (1/3) ... [2023-11-22 21:29:44,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a6998c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:29:44, skipping insertion in model container [2023-11-22 21:29:44,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:42" (2/3) ... [2023-11-22 21:29:44,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a6998c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:29:44, skipping insertion in model container [2023-11-22 21:29:44,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:29:44" (3/3) ... [2023-11-22 21:29:44,340 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product23.cil.c [2023-11-22 21:29:44,353 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 21:29:44,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 21:29:44,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 21:29:44,414 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;@1da0fce7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 21:29:44,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 21:29:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 597 states, 459 states have (on average 1.7080610021786493) internal successors, (784), 477 states have internal predecessors, (784), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-22 21:29:44,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-22 21:29:44,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:44,449 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:44,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:44,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:44,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1757694998, now seen corresponding path program 1 times [2023-11-22 21:29:44,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:44,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144727976] [2023-11-22 21:29:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:44,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:44,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:29:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 21:29:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:29:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 21:29:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:29:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 21:29:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 21:29:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 21:29:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 21:29:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-22 21:29:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,175 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 21:29:45,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:45,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144727976] [2023-11-22 21:29:45,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144727976] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:45,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812093732] [2023-11-22 21:29:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:45,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:45,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:45,180 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) [2023-11-22 21:29:45,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 21:29:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:45,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:45,526 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-22 21:29:45,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:45,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812093732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:45,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:45,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-22 21:29:45,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515873880] [2023-11-22 21:29:45,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:45,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:29:45,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:45,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:29:45,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:29:45,561 INFO L87 Difference]: Start difference. First operand has 597 states, 459 states have (on average 1.7080610021786493) internal successors, (784), 477 states have internal predecessors, (784), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:29:45,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:45,754 INFO L93 Difference]: Finished difference Result 1754 states and 2991 transitions. [2023-11-22 21:29:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:29:45,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2023-11-22 21:29:45,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:45,781 INFO L225 Difference]: With dead ends: 1754 [2023-11-22 21:29:45,782 INFO L226 Difference]: Without dead ends: 1162 [2023-11-22 21:29:45,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:29:45,796 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 985 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:45,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 1919 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:29:45,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2023-11-22 21:29:45,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1153. [2023-11-22 21:29:45,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 897 states have (on average 1.6911928651059085) internal successors, (1517), 926 states have internal predecessors, (1517), 204 states have call successors, (204), 53 states have call predecessors, (204), 51 states have return successors, (212), 199 states have call predecessors, (212), 200 states have call successors, (212) [2023-11-22 21:29:45,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1933 transitions. [2023-11-22 21:29:45,930 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1933 transitions. Word has length 117 [2023-11-22 21:29:45,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:45,931 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1933 transitions. [2023-11-22 21:29:45,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:29:45,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1933 transitions. [2023-11-22 21:29:45,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-22 21:29:45,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:45,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:45,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:46,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-22 21:29:46,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:46,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:46,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1056095124, now seen corresponding path program 1 times [2023-11-22 21:29:46,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:46,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962825656] [2023-11-22 21:29:46,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:46,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:29:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 21:29:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:29:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 21:29:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:29:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 21:29:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 21:29:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 21:29:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 21:29:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-22 21:29:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 21:29:46,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:46,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962825656] [2023-11-22 21:29:46,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962825656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:46,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728042686] [2023-11-22 21:29:46,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:46,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:46,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:46,529 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) [2023-11-22 21:29:46,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 21:29:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:46,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-22 21:29:46,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:46,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728042686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:46,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:46,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 21:29:46,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19382217] [2023-11-22 21:29:46,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:46,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:46,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:46,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:46,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:29:46,859 INFO L87 Difference]: Start difference. First operand 1153 states and 1933 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:29:46,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:46,959 INFO L93 Difference]: Finished difference Result 2312 states and 3879 transitions. [2023-11-22 21:29:46,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:46,964 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2023-11-22 21:29:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:46,971 INFO L225 Difference]: With dead ends: 2312 [2023-11-22 21:29:46,971 INFO L226 Difference]: Without dead ends: 1162 [2023-11-22 21:29:46,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:29:46,977 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 26 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:46,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2841 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:29:46,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2023-11-22 21:29:47,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1162. [2023-11-22 21:29:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 905 states have (on average 1.6917127071823204) internal successors, (1531), 934 states have internal predecessors, (1531), 204 states have call successors, (204), 54 states have call predecessors, (204), 52 states have return successors, (212), 199 states have call predecessors, (212), 200 states have call successors, (212) [2023-11-22 21:29:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1947 transitions. [2023-11-22 21:29:47,034 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1947 transitions. Word has length 117 [2023-11-22 21:29:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:47,035 INFO L495 AbstractCegarLoop]: Abstraction has 1162 states and 1947 transitions. [2023-11-22 21:29:47,035 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:29:47,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1947 transitions. [2023-11-22 21:29:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-22 21:29:47,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:47,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:47,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:47,256 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,SelfDestructingSolverStorable1 [2023-11-22 21:29:47,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:47,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:47,257 INFO L85 PathProgramCache]: Analyzing trace with hash 939237448, now seen corresponding path program 1 times [2023-11-22 21:29:47,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:47,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824692531] [2023-11-22 21:29:47,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:47,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 21:29:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-22 21:29:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 21:29:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 21:29:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 21:29:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 21:29:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-22 21:29:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 21:29:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-22 21:29:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 21:29:47,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:47,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824692531] [2023-11-22 21:29:47,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824692531] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:47,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215497558] [2023-11-22 21:29:47,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:47,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:47,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:47,622 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) [2023-11-22 21:29:47,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 21:29:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:47,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 21:29:47,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:47,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215497558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:47,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:47,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-11-22 21:29:47,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568190167] [2023-11-22 21:29:47,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:47,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:47,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:47,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:47,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-22 21:29:47,898 INFO L87 Difference]: Start difference. First operand 1162 states and 1947 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:29:48,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:48,098 INFO L93 Difference]: Finished difference Result 2363 states and 3973 transitions. [2023-11-22 21:29:48,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:48,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 119 [2023-11-22 21:29:48,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:48,104 INFO L225 Difference]: With dead ends: 2363 [2023-11-22 21:29:48,104 INFO L226 Difference]: Without dead ends: 1206 [2023-11-22 21:29:48,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:29:48,110 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 168 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:48,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2687 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:48,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2023-11-22 21:29:48,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1206. [2023-11-22 21:29:48,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 948 states have (on average 1.7025316455696202) internal successors, (1614), 977 states have internal predecessors, (1614), 204 states have call successors, (204), 55 states have call predecessors, (204), 53 states have return successors, (212), 199 states have call predecessors, (212), 200 states have call successors, (212) [2023-11-22 21:29:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2030 transitions. [2023-11-22 21:29:48,142 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2030 transitions. Word has length 119 [2023-11-22 21:29:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:48,142 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2030 transitions. [2023-11-22 21:29:48,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:29:48,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2030 transitions. [2023-11-22 21:29:48,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-22 21:29:48,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:48,147 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:48,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:48,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:48,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:48,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:48,367 INFO L85 PathProgramCache]: Analyzing trace with hash -665613280, now seen corresponding path program 1 times [2023-11-22 21:29:48,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:48,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953863447] [2023-11-22 21:29:48,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:48,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 21:29:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 21:29:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:29:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 21:29:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-22 21:29:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-22 21:29:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 21:29:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 21:29:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 21:29:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 21:29:48,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:48,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953863447] [2023-11-22 21:29:48,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953863447] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:48,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408150858] [2023-11-22 21:29:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:48,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:48,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:48,668 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) [2023-11-22 21:29:48,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 21:29:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:48,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 21:29:48,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:48,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408150858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:48,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:48,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-22 21:29:48,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691042402] [2023-11-22 21:29:48,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:48,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:48,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:48,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:48,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-22 21:29:48,990 INFO L87 Difference]: Start difference. First operand 1206 states and 2030 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:49,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:49,126 INFO L93 Difference]: Finished difference Result 2440 states and 4105 transitions. [2023-11-22 21:29:49,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:49,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 121 [2023-11-22 21:29:49,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:49,132 INFO L225 Difference]: With dead ends: 2440 [2023-11-22 21:29:49,132 INFO L226 Difference]: Without dead ends: 1239 [2023-11-22 21:29:49,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:29:49,137 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 113 mSDsluCounter, 4651 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5601 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:49,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5601 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:49,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2023-11-22 21:29:49,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1218. [2023-11-22 21:29:49,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 957 states have (on average 1.7011494252873562) internal successors, (1628), 988 states have internal predecessors, (1628), 205 states have call successors, (205), 55 states have call predecessors, (205), 55 states have return successors, (217), 200 states have call predecessors, (217), 201 states have call successors, (217) [2023-11-22 21:29:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 2050 transitions. [2023-11-22 21:29:49,166 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 2050 transitions. Word has length 121 [2023-11-22 21:29:49,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:49,167 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 2050 transitions. [2023-11-22 21:29:49,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:49,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 2050 transitions. [2023-11-22 21:29:49,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-22 21:29:49,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:49,170 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:49,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:49,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:49,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:49,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:49,388 INFO L85 PathProgramCache]: Analyzing trace with hash 943605512, now seen corresponding path program 1 times [2023-11-22 21:29:49,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:49,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941120590] [2023-11-22 21:29:49,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:49,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 21:29:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 21:29:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 21:29:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:29:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 21:29:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 21:29:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 21:29:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 21:29:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 21:29:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:29:49,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:49,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941120590] [2023-11-22 21:29:49,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941120590] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:49,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359715939] [2023-11-22 21:29:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:49,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:49,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:49,657 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) [2023-11-22 21:29:49,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 21:29:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:49,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 21:29:49,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:49,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359715939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:49,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:50,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-22 21:29:50,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198406861] [2023-11-22 21:29:50,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:50,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:50,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:50,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:50,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:29:50,001 INFO L87 Difference]: Start difference. First operand 1218 states and 2050 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:50,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:50,131 INFO L93 Difference]: Finished difference Result 2458 states and 4134 transitions. [2023-11-22 21:29:50,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:50,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 122 [2023-11-22 21:29:50,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:50,137 INFO L225 Difference]: With dead ends: 2458 [2023-11-22 21:29:50,137 INFO L226 Difference]: Without dead ends: 1247 [2023-11-22 21:29:50,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:29:50,142 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 124 mSDsluCounter, 4644 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5595 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:50,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5595 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:50,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2023-11-22 21:29:50,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1218. [2023-11-22 21:29:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 957 states have (on average 1.7011494252873562) internal successors, (1628), 988 states have internal predecessors, (1628), 205 states have call successors, (205), 55 states have call predecessors, (205), 55 states have return successors, (217), 200 states have call predecessors, (217), 201 states have call successors, (217) [2023-11-22 21:29:50,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 2050 transitions. [2023-11-22 21:29:50,169 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 2050 transitions. Word has length 122 [2023-11-22 21:29:50,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:50,170 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 2050 transitions. [2023-11-22 21:29:50,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:50,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 2050 transitions. [2023-11-22 21:29:50,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-22 21:29:50,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:50,173 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:50,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:50,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:50,386 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:50,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:50,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1607634638, now seen corresponding path program 1 times [2023-11-22 21:29:50,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:50,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235499666] [2023-11-22 21:29:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:50,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:29:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 21:29:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 21:29:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 21:29:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:29:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 21:29:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 21:29:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 21:29:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 21:29:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 21:29:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-22 21:29:50,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:50,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235499666] [2023-11-22 21:29:50,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235499666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:50,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661498827] [2023-11-22 21:29:50,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:50,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:50,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:50,603 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) [2023-11-22 21:29:50,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 21:29:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:50,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 21:29:50,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:50,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661498827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:50,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:50,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 21:29:50,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872795736] [2023-11-22 21:29:50,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:50,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:50,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:50,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:50,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:29:50,857 INFO L87 Difference]: Start difference. First operand 1218 states and 2050 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:29:50,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:50,935 INFO L93 Difference]: Finished difference Result 2446 states and 4114 transitions. [2023-11-22 21:29:50,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:50,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 122 [2023-11-22 21:29:50,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:50,941 INFO L225 Difference]: With dead ends: 2446 [2023-11-22 21:29:50,941 INFO L226 Difference]: Without dead ends: 1229 [2023-11-22 21:29:50,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:29:50,946 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 20 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2842 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:50,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2842 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:29:50,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2023-11-22 21:29:50,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2023-11-22 21:29:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 965 states have (on average 1.6922279792746113) internal successors, (1633), 996 states have internal predecessors, (1633), 205 states have call successors, (205), 56 states have call predecessors, (205), 56 states have return successors, (216), 200 states have call predecessors, (216), 201 states have call successors, (216) [2023-11-22 21:29:50,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2054 transitions. [2023-11-22 21:29:50,973 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2054 transitions. Word has length 122 [2023-11-22 21:29:50,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:50,973 INFO L495 AbstractCegarLoop]: Abstraction has 1227 states and 2054 transitions. [2023-11-22 21:29:50,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:29:50,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2054 transitions. [2023-11-22 21:29:50,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-22 21:29:50,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:50,976 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:50,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:51,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:51,188 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:51,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:51,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1867457924, now seen corresponding path program 1 times [2023-11-22 21:29:51,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:51,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240255244] [2023-11-22 21:29:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:51,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 21:29:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 21:29:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 21:29:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 21:29:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 21:29:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 21:29:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 21:29:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 21:29:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 21:29:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:29:51,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:51,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240255244] [2023-11-22 21:29:51,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240255244] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:51,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356539902] [2023-11-22 21:29:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:51,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:51,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:51,473 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) [2023-11-22 21:29:51,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 21:29:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:51,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 21:29:51,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:51,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356539902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:51,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:51,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-22 21:29:51,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649000837] [2023-11-22 21:29:51,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:51,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:51,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:51,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:51,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:29:51,762 INFO L87 Difference]: Start difference. First operand 1227 states and 2054 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:51,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:51,888 INFO L93 Difference]: Finished difference Result 2467 states and 4129 transitions. [2023-11-22 21:29:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:51,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 123 [2023-11-22 21:29:51,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:51,894 INFO L225 Difference]: With dead ends: 2467 [2023-11-22 21:29:51,894 INFO L226 Difference]: Without dead ends: 1258 [2023-11-22 21:29:51,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:29:51,898 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 135 mSDsluCounter, 4632 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5583 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:51,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 5583 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2023-11-22 21:29:51,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1227. [2023-11-22 21:29:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 965 states have (on average 1.6922279792746113) internal successors, (1633), 996 states have internal predecessors, (1633), 205 states have call successors, (205), 56 states have call predecessors, (205), 56 states have return successors, (216), 200 states have call predecessors, (216), 201 states have call successors, (216) [2023-11-22 21:29:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2054 transitions. [2023-11-22 21:29:51,925 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2054 transitions. Word has length 123 [2023-11-22 21:29:51,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:51,926 INFO L495 AbstractCegarLoop]: Abstraction has 1227 states and 2054 transitions. [2023-11-22 21:29:51,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:51,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2054 transitions. [2023-11-22 21:29:51,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-22 21:29:51,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:51,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:51,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:52,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:52,141 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:52,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:52,142 INFO L85 PathProgramCache]: Analyzing trace with hash -611731142, now seen corresponding path program 1 times [2023-11-22 21:29:52,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:52,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700926150] [2023-11-22 21:29:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:52,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 21:29:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 21:29:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 21:29:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 21:29:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 21:29:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 21:29:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 21:29:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 21:29:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 21:29:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:29:52,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:52,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700926150] [2023-11-22 21:29:52,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700926150] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:52,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287472418] [2023-11-22 21:29:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:52,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:52,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:52,404 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) [2023-11-22 21:29:52,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 21:29:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:29:52,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 21:29:52,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:52,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287472418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:52,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:52,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 21:29:52,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991016136] [2023-11-22 21:29:52,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:52,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:29:52,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:52,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:29:52,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:29:52,739 INFO L87 Difference]: Start difference. First operand 1227 states and 2054 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:52,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:52,922 INFO L93 Difference]: Finished difference Result 2469 states and 4132 transitions. [2023-11-22 21:29:52,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:29:52,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 123 [2023-11-22 21:29:52,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:52,928 INFO L225 Difference]: With dead ends: 2469 [2023-11-22 21:29:52,928 INFO L226 Difference]: Without dead ends: 1260 [2023-11-22 21:29:52,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-22 21:29:52,934 INFO L413 NwaCegarLoop]: 941 mSDtfsCounter, 131 mSDsluCounter, 5553 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6494 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:52,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6494 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:52,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2023-11-22 21:29:52,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1227. [2023-11-22 21:29:52,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 965 states have (on average 1.6922279792746113) internal successors, (1633), 996 states have internal predecessors, (1633), 205 states have call successors, (205), 56 states have call predecessors, (205), 56 states have return successors, (216), 200 states have call predecessors, (216), 201 states have call successors, (216) [2023-11-22 21:29:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2054 transitions. [2023-11-22 21:29:52,964 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2054 transitions. Word has length 123 [2023-11-22 21:29:52,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:52,964 INFO L495 AbstractCegarLoop]: Abstraction has 1227 states and 2054 transitions. [2023-11-22 21:29:52,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:52,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2054 transitions. [2023-11-22 21:29:52,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-22 21:29:52,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:52,967 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:52,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:53,187 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,SelfDestructingSolverStorable7 [2023-11-22 21:29:53,187 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:53,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:53,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2143529572, now seen corresponding path program 1 times [2023-11-22 21:29:53,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:53,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130113817] [2023-11-22 21:29:53,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:53,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:29:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-22 21:29:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:29:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 21:29:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 21:29:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 21:29:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-22 21:29:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-22 21:29:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 21:29:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:29:53,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:53,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130113817] [2023-11-22 21:29:53,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130113817] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:53,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747673262] [2023-11-22 21:29:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:53,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:53,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:53,454 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) [2023-11-22 21:29:53,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 21:29:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:29:53,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 21:29:53,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:53,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747673262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:53,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:53,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 21:29:53,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182488278] [2023-11-22 21:29:53,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:53,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:29:53,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:53,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:29:53,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:29:53,773 INFO L87 Difference]: Start difference. First operand 1227 states and 2054 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:53,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:53,954 INFO L93 Difference]: Finished difference Result 2469 states and 4132 transitions. [2023-11-22 21:29:53,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:29:53,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 124 [2023-11-22 21:29:53,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:53,959 INFO L225 Difference]: With dead ends: 2469 [2023-11-22 21:29:53,959 INFO L226 Difference]: Without dead ends: 1260 [2023-11-22 21:29:53,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-22 21:29:53,964 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 141 mSDsluCounter, 5535 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6475 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:53,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6475 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:53,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2023-11-22 21:29:54,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1227. [2023-11-22 21:29:54,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 965 states have (on average 1.6922279792746113) internal successors, (1633), 996 states have internal predecessors, (1633), 205 states have call successors, (205), 56 states have call predecessors, (205), 56 states have return successors, (216), 200 states have call predecessors, (216), 201 states have call successors, (216) [2023-11-22 21:29:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2054 transitions. [2023-11-22 21:29:54,018 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2054 transitions. Word has length 124 [2023-11-22 21:29:54,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:54,018 INFO L495 AbstractCegarLoop]: Abstraction has 1227 states and 2054 transitions. [2023-11-22 21:29:54,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:54,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2054 transitions. [2023-11-22 21:29:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-22 21:29:54,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:54,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:54,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:54,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:54,227 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:54,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:54,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2048421867, now seen corresponding path program 1 times [2023-11-22 21:29:54,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:54,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113751773] [2023-11-22 21:29:54,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:54,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:29:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 21:29:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 21:29:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-22 21:29:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 21:29:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 21:29:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 21:29:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-22 21:29:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,459 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:29:54,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:54,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113751773] [2023-11-22 21:29:54,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113751773] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:54,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271634971] [2023-11-22 21:29:54,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:54,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:54,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:54,461 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) [2023-11-22 21:29:54,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 21:29:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:29:54,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:54,776 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 21:29:54,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:54,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271634971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:54,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:54,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 21:29:54,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940224338] [2023-11-22 21:29:54,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:54,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:29:54,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:54,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:29:54,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:29:54,779 INFO L87 Difference]: Start difference. First operand 1227 states and 2054 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:54,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:54,962 INFO L93 Difference]: Finished difference Result 2461 states and 4118 transitions. [2023-11-22 21:29:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:29:54,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2023-11-22 21:29:54,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:54,967 INFO L225 Difference]: With dead ends: 2461 [2023-11-22 21:29:54,967 INFO L226 Difference]: Without dead ends: 1252 [2023-11-22 21:29:54,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-22 21:29:54,971 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 151 mSDsluCounter, 5523 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 6463 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:54,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 6463 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2023-11-22 21:29:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1227. [2023-11-22 21:29:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 965 states have (on average 1.6922279792746113) internal successors, (1633), 996 states have internal predecessors, (1633), 205 states have call successors, (205), 56 states have call predecessors, (205), 56 states have return successors, (216), 200 states have call predecessors, (216), 201 states have call successors, (216) [2023-11-22 21:29:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2054 transitions. [2023-11-22 21:29:54,998 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2054 transitions. Word has length 125 [2023-11-22 21:29:54,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:54,998 INFO L495 AbstractCegarLoop]: Abstraction has 1227 states and 2054 transitions. [2023-11-22 21:29:54,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:54,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2054 transitions. [2023-11-22 21:29:55,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-22 21:29:55,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:55,001 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:55,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:55,215 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,SelfDestructingSolverStorable9 [2023-11-22 21:29:55,215 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:55,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:55,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2065327607, now seen corresponding path program 1 times [2023-11-22 21:29:55,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:55,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537258593] [2023-11-22 21:29:55,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:55,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:29:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 21:29:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 21:29:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-22 21:29:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 21:29:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 21:29:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 21:29:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-22 21:29:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-22 21:29:55,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:55,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537258593] [2023-11-22 21:29:55,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537258593] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:55,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074462253] [2023-11-22 21:29:55,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:55,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:55,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:55,444 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) [2023-11-22 21:29:55,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 21:29:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:55,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 21:29:55,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:55,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074462253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:55,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:55,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 21:29:55,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253940619] [2023-11-22 21:29:55,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:55,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:55,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:55,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:55,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:29:55,706 INFO L87 Difference]: Start difference. First operand 1227 states and 2054 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:29:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:55,778 INFO L93 Difference]: Finished difference Result 2425 states and 4065 transitions. [2023-11-22 21:29:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:55,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 125 [2023-11-22 21:29:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:55,784 INFO L225 Difference]: With dead ends: 2425 [2023-11-22 21:29:55,784 INFO L226 Difference]: Without dead ends: 1227 [2023-11-22 21:29:55,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:29:55,788 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 35 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:55,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2840 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:29:55,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2023-11-22 21:29:55,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1227. [2023-11-22 21:29:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 965 states have (on average 1.6870466321243522) internal successors, (1628), 996 states have internal predecessors, (1628), 205 states have call successors, (205), 56 states have call predecessors, (205), 56 states have return successors, (216), 200 states have call predecessors, (216), 201 states have call successors, (216) [2023-11-22 21:29:55,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2049 transitions. [2023-11-22 21:29:55,816 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2049 transitions. Word has length 125 [2023-11-22 21:29:55,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:55,817 INFO L495 AbstractCegarLoop]: Abstraction has 1227 states and 2049 transitions. [2023-11-22 21:29:55,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:29:55,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2049 transitions. [2023-11-22 21:29:55,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-22 21:29:55,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:55,820 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:55,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:56,028 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,SelfDestructingSolverStorable10 [2023-11-22 21:29:56,028 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:56,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:56,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1364332607, now seen corresponding path program 1 times [2023-11-22 21:29:56,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:56,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426580825] [2023-11-22 21:29:56,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:56,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 21:29:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 21:29:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 21:29:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 21:29:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-22 21:29:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 21:29:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-22 21:29:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-22 21:29:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 21:29:56,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:56,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426580825] [2023-11-22 21:29:56,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426580825] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:56,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415968626] [2023-11-22 21:29:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:56,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:56,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:56,228 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) [2023-11-22 21:29:56,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 21:29:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:56,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-22 21:29:56,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:56,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415968626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:56,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:56,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-22 21:29:56,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209229519] [2023-11-22 21:29:56,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:56,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:56,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:56,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:56,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:29:56,482 INFO L87 Difference]: Start difference. First operand 1227 states and 2049 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:29:56,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:56,648 INFO L93 Difference]: Finished difference Result 2421 states and 4056 transitions. [2023-11-22 21:29:56,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:56,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 126 [2023-11-22 21:29:56,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:56,654 INFO L225 Difference]: With dead ends: 2421 [2023-11-22 21:29:56,654 INFO L226 Difference]: Without dead ends: 1279 [2023-11-22 21:29:56,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:29:56,659 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 239 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:56,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2676 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:56,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-11-22 21:29:56,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1271. [2023-11-22 21:29:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1008 states have (on average 1.6974206349206349) internal successors, (1711), 1039 states have internal predecessors, (1711), 205 states have call successors, (205), 57 states have call predecessors, (205), 57 states have return successors, (215), 200 states have call predecessors, (215), 201 states have call successors, (215) [2023-11-22 21:29:56,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 2131 transitions. [2023-11-22 21:29:56,691 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 2131 transitions. Word has length 126 [2023-11-22 21:29:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:56,691 INFO L495 AbstractCegarLoop]: Abstraction has 1271 states and 2131 transitions. [2023-11-22 21:29:56,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:29:56,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 2131 transitions. [2023-11-22 21:29:56,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-22 21:29:56,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:56,695 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:56,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:56,909 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,SelfDestructingSolverStorable11 [2023-11-22 21:29:56,910 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:56,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash 547441015, now seen corresponding path program 1 times [2023-11-22 21:29:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:56,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037110069] [2023-11-22 21:29:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:56,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 21:29:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 21:29:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 21:29:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-22 21:29:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 21:29:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 21:29:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 21:29:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 21:29:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-22 21:29:57,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:57,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037110069] [2023-11-22 21:29:57,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037110069] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:57,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638503693] [2023-11-22 21:29:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:57,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:57,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:57,082 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) [2023-11-22 21:29:57,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 21:29:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:57,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:57,334 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:29:57,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:57,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638503693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:57,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:57,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-22 21:29:57,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984880615] [2023-11-22 21:29:57,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:57,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:57,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:57,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:57,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:29:57,337 INFO L87 Difference]: Start difference. First operand 1271 states and 2131 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:57,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:57,481 INFO L93 Difference]: Finished difference Result 2455 states and 4105 transitions. [2023-11-22 21:29:57,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:57,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 127 [2023-11-22 21:29:57,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:57,486 INFO L225 Difference]: With dead ends: 2455 [2023-11-22 21:29:57,486 INFO L226 Difference]: Without dead ends: 1313 [2023-11-22 21:29:57,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:29:57,490 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 113 mSDsluCounter, 4657 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5608 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:57,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5608 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:57,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2023-11-22 21:29:57,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1283. [2023-11-22 21:29:57,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1017 states have (on average 1.696165191740413) internal successors, (1725), 1050 states have internal predecessors, (1725), 206 states have call successors, (206), 57 states have call predecessors, (206), 59 states have return successors, (218), 201 states have call predecessors, (218), 202 states have call successors, (218) [2023-11-22 21:29:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 2149 transitions. [2023-11-22 21:29:57,516 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 2149 transitions. Word has length 127 [2023-11-22 21:29:57,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:57,516 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 2149 transitions. [2023-11-22 21:29:57,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 2149 transitions. [2023-11-22 21:29:57,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-22 21:29:57,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:57,519 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:57,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:57,731 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,SelfDestructingSolverStorable12 [2023-11-22 21:29:57,731 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:57,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:57,732 INFO L85 PathProgramCache]: Analyzing trace with hash -129745945, now seen corresponding path program 1 times [2023-11-22 21:29:57,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:57,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966159376] [2023-11-22 21:29:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:57,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:29:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:29:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 21:29:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 21:29:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 21:29:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 21:29:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-22 21:29:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 21:29:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-22 21:29:57,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:57,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966159376] [2023-11-22 21:29:57,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966159376] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:57,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973745308] [2023-11-22 21:29:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:57,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:57,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:57,950 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) [2023-11-22 21:29:57,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-22 21:29:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:58,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:58,210 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:29:58,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:58,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973745308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:58,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:58,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-22 21:29:58,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816740313] [2023-11-22 21:29:58,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:58,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:58,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:58,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:58,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:29:58,212 INFO L87 Difference]: Start difference. First operand 1283 states and 2149 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:58,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:58,337 INFO L93 Difference]: Finished difference Result 2463 states and 4118 transitions. [2023-11-22 21:29:58,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:58,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 128 [2023-11-22 21:29:58,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:58,343 INFO L225 Difference]: With dead ends: 2463 [2023-11-22 21:29:58,343 INFO L226 Difference]: Without dead ends: 1321 [2023-11-22 21:29:58,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:29:58,346 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 124 mSDsluCounter, 4640 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5590 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:58,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5590 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:58,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2023-11-22 21:29:58,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1283. [2023-11-22 21:29:58,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1017 states have (on average 1.696165191740413) internal successors, (1725), 1050 states have internal predecessors, (1725), 206 states have call successors, (206), 57 states have call predecessors, (206), 59 states have return successors, (218), 201 states have call predecessors, (218), 202 states have call successors, (218) [2023-11-22 21:29:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 2149 transitions. [2023-11-22 21:29:58,404 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 2149 transitions. Word has length 128 [2023-11-22 21:29:58,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:58,405 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 2149 transitions. [2023-11-22 21:29:58,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:58,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 2149 transitions. [2023-11-22 21:29:58,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-22 21:29:58,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:58,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:58,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:58,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:58,616 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:58,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1390233497, now seen corresponding path program 1 times [2023-11-22 21:29:58,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:58,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986506245] [2023-11-22 21:29:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:58,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:29:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:29:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 21:29:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 21:29:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 21:29:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 21:29:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-22 21:29:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 21:29:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-22 21:29:58,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:58,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986506245] [2023-11-22 21:29:58,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986506245] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:58,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946771489] [2023-11-22 21:29:58,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:58,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:58,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:58,813 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) [2023-11-22 21:29:58,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-22 21:29:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:29:59,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:59,099 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:29:59,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:59,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946771489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:59,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:59,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-11-22 21:29:59,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247377422] [2023-11-22 21:29:59,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:59,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:29:59,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:59,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:29:59,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:29:59,101 INFO L87 Difference]: Start difference. First operand 1283 states and 2149 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:59,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:59,276 INFO L93 Difference]: Finished difference Result 2465 states and 4120 transitions. [2023-11-22 21:29:59,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:29:59,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 128 [2023-11-22 21:29:59,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:59,281 INFO L225 Difference]: With dead ends: 2465 [2023-11-22 21:29:59,281 INFO L226 Difference]: Without dead ends: 1323 [2023-11-22 21:29:59,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:29:59,285 INFO L413 NwaCegarLoop]: 941 mSDtfsCounter, 132 mSDsluCounter, 5554 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6495 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:59,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6495 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:59,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2023-11-22 21:29:59,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1283. [2023-11-22 21:29:59,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1017 states have (on average 1.696165191740413) internal successors, (1725), 1050 states have internal predecessors, (1725), 206 states have call successors, (206), 57 states have call predecessors, (206), 59 states have return successors, (218), 201 states have call predecessors, (218), 202 states have call successors, (218) [2023-11-22 21:29:59,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 2149 transitions. [2023-11-22 21:29:59,310 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 2149 transitions. Word has length 128 [2023-11-22 21:29:59,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:59,310 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 2149 transitions. [2023-11-22 21:29:59,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:29:59,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 2149 transitions. [2023-11-22 21:29:59,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-22 21:29:59,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:59,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:59,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-22 21:29:59,525 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,SelfDestructingSolverStorable14 [2023-11-22 21:29:59,525 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:59,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:59,526 INFO L85 PathProgramCache]: Analyzing trace with hash -633947843, now seen corresponding path program 1 times [2023-11-22 21:29:59,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:59,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446166211] [2023-11-22 21:29:59,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:59,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:29:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:29:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:29:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 21:29:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 21:29:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:29:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 21:29:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 21:29:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-22 21:29:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 21:29:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-22 21:29:59,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:59,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446166211] [2023-11-22 21:29:59,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446166211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:59,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280578647] [2023-11-22 21:29:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:59,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:59,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:59,712 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) [2023-11-22 21:29:59,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-22 21:29:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:59,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 21:29:59,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:59,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280578647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:59,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:59,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 21:29:59,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064904550] [2023-11-22 21:29:59,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:59,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:59,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:59,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:59,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:29:59,980 INFO L87 Difference]: Start difference. First operand 1283 states and 2149 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:30:00,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:00,043 INFO L93 Difference]: Finished difference Result 2497 states and 4184 transitions. [2023-11-22 21:30:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 21:30:00,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2023-11-22 21:30:00,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:00,048 INFO L225 Difference]: With dead ends: 2497 [2023-11-22 21:30:00,048 INFO L226 Difference]: Without dead ends: 1283 [2023-11-22 21:30:00,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:30:00,051 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 10 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2842 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:00,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2842 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:30:00,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2023-11-22 21:30:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1283. [2023-11-22 21:30:00,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1017 states have (on average 1.6932153392330382) internal successors, (1722), 1050 states have internal predecessors, (1722), 206 states have call successors, (206), 57 states have call predecessors, (206), 59 states have return successors, (218), 201 states have call predecessors, (218), 202 states have call successors, (218) [2023-11-22 21:30:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 2146 transitions. [2023-11-22 21:30:00,076 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 2146 transitions. Word has length 128 [2023-11-22 21:30:00,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:00,076 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 2146 transitions. [2023-11-22 21:30:00,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:30:00,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 2146 transitions. [2023-11-22 21:30:00,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-22 21:30:00,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:00,079 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:00,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-22 21:30:00,292 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,SelfDestructingSolverStorable15 [2023-11-22 21:30:00,292 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:00,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:00,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1336383847, now seen corresponding path program 1 times [2023-11-22 21:30:00,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:00,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659807334] [2023-11-22 21:30:00,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:00,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 21:30:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:30:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-22 21:30:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:30:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:30:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-22 21:30:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 21:30:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 21:30:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-22 21:30:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-22 21:30:00,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:00,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659807334] [2023-11-22 21:30:00,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659807334] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:00,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129308624] [2023-11-22 21:30:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:00,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:00,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:00,473 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) [2023-11-22 21:30:00,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-22 21:30:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:30:00,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:30:00,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:00,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129308624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:00,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:00,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-11-22 21:30:00,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921631423] [2023-11-22 21:30:00,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:00,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:30:00,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:00,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:30:00,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:30:00,796 INFO L87 Difference]: Start difference. First operand 1283 states and 2146 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:30:00,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:00,970 INFO L93 Difference]: Finished difference Result 2457 states and 4104 transitions. [2023-11-22 21:30:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:30:00,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2023-11-22 21:30:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:00,976 INFO L225 Difference]: With dead ends: 2457 [2023-11-22 21:30:00,976 INFO L226 Difference]: Without dead ends: 1315 [2023-11-22 21:30:00,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:30:00,978 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 142 mSDsluCounter, 5521 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6458 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:00,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6458 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:30:00,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2023-11-22 21:30:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1283. [2023-11-22 21:30:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1017 states have (on average 1.6932153392330382) internal successors, (1722), 1050 states have internal predecessors, (1722), 206 states have call successors, (206), 57 states have call predecessors, (206), 59 states have return successors, (218), 201 states have call predecessors, (218), 202 states have call successors, (218) [2023-11-22 21:30:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 2146 transitions. [2023-11-22 21:30:01,004 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 2146 transitions. Word has length 129 [2023-11-22 21:30:01,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:01,004 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 2146 transitions. [2023-11-22 21:30:01,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:30:01,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 2146 transitions. [2023-11-22 21:30:01,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-22 21:30:01,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:01,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:01,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:01,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-22 21:30:01,221 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:01,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:01,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1014748396, now seen corresponding path program 1 times [2023-11-22 21:30:01,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:01,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501143730] [2023-11-22 21:30:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:01,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 21:30:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 21:30:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 21:30:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-22 21:30:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:30:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 21:30:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 21:30:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 21:30:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-22 21:30:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-22 21:30:01,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:01,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501143730] [2023-11-22 21:30:01,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501143730] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:01,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419736529] [2023-11-22 21:30:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:01,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:01,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:01,432 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) [2023-11-22 21:30:01,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-22 21:30:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 21:30:01,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-22 21:30:01,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:01,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419736529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:01,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:01,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-11-22 21:30:01,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274208854] [2023-11-22 21:30:01,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:01,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:30:01,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:01,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:30:01,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:30:01,739 INFO L87 Difference]: Start difference. First operand 1283 states and 2146 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:02,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:02,198 INFO L93 Difference]: Finished difference Result 2437 states and 4134 transitions. [2023-11-22 21:30:02,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:30:02,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2023-11-22 21:30:02,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:02,203 INFO L225 Difference]: With dead ends: 2437 [2023-11-22 21:30:02,203 INFO L226 Difference]: Without dead ends: 1299 [2023-11-22 21:30:02,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:30:02,207 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 930 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:02,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2401 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 21:30:02,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2023-11-22 21:30:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1299. [2023-11-22 21:30:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 1031 states have (on average 1.693501454898157) internal successors, (1746), 1064 states have internal predecessors, (1746), 206 states have call successors, (206), 59 states have call predecessors, (206), 61 states have return successors, (220), 201 states have call predecessors, (220), 202 states have call successors, (220) [2023-11-22 21:30:02,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 2172 transitions. [2023-11-22 21:30:02,238 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 2172 transitions. Word has length 130 [2023-11-22 21:30:02,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:02,238 INFO L495 AbstractCegarLoop]: Abstraction has 1299 states and 2172 transitions. [2023-11-22 21:30:02,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:02,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 2172 transitions. [2023-11-22 21:30:02,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-22 21:30:02,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:02,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:02,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:02,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-22 21:30:02,453 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:02,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:02,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1176457160, now seen corresponding path program 1 times [2023-11-22 21:30:02,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:02,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135223487] [2023-11-22 21:30:02,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:02,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 21:30:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 21:30:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 21:30:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 21:30:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 21:30:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 21:30:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 21:30:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-22 21:30:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 21:30:02,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:02,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135223487] [2023-11-22 21:30:02,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135223487] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:02,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696667855] [2023-11-22 21:30:02,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:02,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:02,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:02,639 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) [2023-11-22 21:30:02,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-22 21:30:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 21:30:02,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-22 21:30:02,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:02,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696667855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:02,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:02,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-11-22 21:30:02,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847268120] [2023-11-22 21:30:02,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:02,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:30:02,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:02,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:30:02,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:30:02,957 INFO L87 Difference]: Start difference. First operand 1299 states and 2172 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:03,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:03,378 INFO L93 Difference]: Finished difference Result 2469 states and 4180 transitions. [2023-11-22 21:30:03,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:30:03,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 132 [2023-11-22 21:30:03,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:03,391 INFO L225 Difference]: With dead ends: 2469 [2023-11-22 21:30:03,391 INFO L226 Difference]: Without dead ends: 1315 [2023-11-22 21:30:03,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:30:03,395 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 920 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:03,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 2401 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 21:30:03,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2023-11-22 21:30:03,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1315. [2023-11-22 21:30:03,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1045 states have (on average 1.69377990430622) internal successors, (1770), 1078 states have internal predecessors, (1770), 206 states have call successors, (206), 61 states have call predecessors, (206), 63 states have return successors, (222), 201 states have call predecessors, (222), 202 states have call successors, (222) [2023-11-22 21:30:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 2198 transitions. [2023-11-22 21:30:03,423 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 2198 transitions. Word has length 132 [2023-11-22 21:30:03,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:03,423 INFO L495 AbstractCegarLoop]: Abstraction has 1315 states and 2198 transitions. [2023-11-22 21:30:03,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 2198 transitions. [2023-11-22 21:30:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-22 21:30:03,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:03,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:03,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:03,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:03,638 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:03,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash -532353428, now seen corresponding path program 1 times [2023-11-22 21:30:03,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:03,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418018679] [2023-11-22 21:30:03,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:03,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 21:30:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 21:30:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 21:30:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-22 21:30:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 21:30:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-22 21:30:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 21:30:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-22 21:30:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-22 21:30:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-22 21:30:03,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:03,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418018679] [2023-11-22 21:30:03,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418018679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:03,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061859186] [2023-11-22 21:30:03,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:03,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:03,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:03,845 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) [2023-11-22 21:30:03,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-22 21:30:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 21:30:04,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-22 21:30:04,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:04,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061859186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:04,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:04,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-11-22 21:30:04,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443637685] [2023-11-22 21:30:04,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:04,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:30:04,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:04,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:30:04,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:30:04,154 INFO L87 Difference]: Start difference. First operand 1315 states and 2198 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:04,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:04,570 INFO L93 Difference]: Finished difference Result 2501 states and 4226 transitions. [2023-11-22 21:30:04,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:30:04,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 134 [2023-11-22 21:30:04,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:04,575 INFO L225 Difference]: With dead ends: 2501 [2023-11-22 21:30:04,575 INFO L226 Difference]: Without dead ends: 1331 [2023-11-22 21:30:04,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:30:04,580 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 924 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:04,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 2401 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 21:30:04,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2023-11-22 21:30:04,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1331. [2023-11-22 21:30:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1059 states have (on average 1.6940509915014164) internal successors, (1794), 1092 states have internal predecessors, (1794), 206 states have call successors, (206), 63 states have call predecessors, (206), 65 states have return successors, (224), 201 states have call predecessors, (224), 202 states have call successors, (224) [2023-11-22 21:30:04,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2224 transitions. [2023-11-22 21:30:04,610 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2224 transitions. Word has length 134 [2023-11-22 21:30:04,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:04,611 INFO L495 AbstractCegarLoop]: Abstraction has 1331 states and 2224 transitions. [2023-11-22 21:30:04,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:04,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2224 transitions. [2023-11-22 21:30:04,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 21:30:04,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:04,614 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:04,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:04,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:04,826 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:04,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:04,826 INFO L85 PathProgramCache]: Analyzing trace with hash -410134080, now seen corresponding path program 1 times [2023-11-22 21:30:04,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:04,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015781722] [2023-11-22 21:30:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:04,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 21:30:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 21:30:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-22 21:30:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 21:30:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:30:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 21:30:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 21:30:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 21:30:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 21:30:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-22 21:30:04,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:04,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015781722] [2023-11-22 21:30:04,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015781722] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:04,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126391696] [2023-11-22 21:30:04,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:04,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:04,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:04,999 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) [2023-11-22 21:30:05,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-22 21:30:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:05,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 21:30:05,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-22 21:30:05,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:05,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126391696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:05,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:05,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-11-22 21:30:05,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498734600] [2023-11-22 21:30:05,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:05,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:30:05,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:05,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:30:05,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:30:05,314 INFO L87 Difference]: Start difference. First operand 1331 states and 2224 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:05,740 INFO L93 Difference]: Finished difference Result 2533 states and 4272 transitions. [2023-11-22 21:30:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:30:05,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2023-11-22 21:30:05,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:05,745 INFO L225 Difference]: With dead ends: 2533 [2023-11-22 21:30:05,745 INFO L226 Difference]: Without dead ends: 1347 [2023-11-22 21:30:05,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:30:05,750 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 906 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:05,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 2401 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 21:30:05,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2023-11-22 21:30:05,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1347. [2023-11-22 21:30:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1073 states have (on average 1.6943150046598323) internal successors, (1818), 1106 states have internal predecessors, (1818), 206 states have call successors, (206), 65 states have call predecessors, (206), 67 states have return successors, (226), 201 states have call predecessors, (226), 202 states have call successors, (226) [2023-11-22 21:30:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2250 transitions. [2023-11-22 21:30:05,775 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2250 transitions. Word has length 136 [2023-11-22 21:30:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:05,775 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2250 transitions. [2023-11-22 21:30:05,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2250 transitions. [2023-11-22 21:30:05,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-22 21:30:05,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:05,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:05,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:05,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:05,991 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:05,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:05,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1451132396, now seen corresponding path program 1 times [2023-11-22 21:30:05,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:05,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454715946] [2023-11-22 21:30:05,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:05,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 21:30:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 21:30:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 21:30:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 21:30:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 21:30:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 21:30:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-22 21:30:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-22 21:30:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-22 21:30:06,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:06,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454715946] [2023-11-22 21:30:06,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454715946] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:06,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921274611] [2023-11-22 21:30:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:06,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:06,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:06,184 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) [2023-11-22 21:30:06,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-22 21:30:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 21:30:06,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-22 21:30:06,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:06,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921274611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:06,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:06,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-22 21:30:06,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606327401] [2023-11-22 21:30:06,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:06,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:30:06,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:06,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:30:06,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:30:06,405 INFO L87 Difference]: Start difference. First operand 1347 states and 2250 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:30:06,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:06,482 INFO L93 Difference]: Finished difference Result 2676 states and 4481 transitions. [2023-11-22 21:30:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:30:06,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2023-11-22 21:30:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:06,487 INFO L225 Difference]: With dead ends: 2676 [2023-11-22 21:30:06,487 INFO L226 Difference]: Without dead ends: 1313 [2023-11-22 21:30:06,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:30:06,490 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 13 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:06,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2841 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:30:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2023-11-22 21:30:06,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1313. [2023-11-22 21:30:06,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1042 states have (on average 1.6813819577735125) internal successors, (1752), 1073 states have internal predecessors, (1752), 205 states have call successors, (205), 65 states have call predecessors, (205), 65 states have return successors, (223), 200 states have call predecessors, (223), 201 states have call successors, (223) [2023-11-22 21:30:06,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 2180 transitions. [2023-11-22 21:30:06,514 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 2180 transitions. Word has length 138 [2023-11-22 21:30:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:06,515 INFO L495 AbstractCegarLoop]: Abstraction has 1313 states and 2180 transitions. [2023-11-22 21:30:06,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:30:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 2180 transitions. [2023-11-22 21:30:06,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-22 21:30:06,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:06,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:06,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:06,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:06,732 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:06,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:06,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1871193404, now seen corresponding path program 1 times [2023-11-22 21:30:06,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:06,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514181684] [2023-11-22 21:30:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:06,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:30:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 21:30:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-22 21:30:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-22 21:30:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 21:30:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 21:30:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 21:30:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-22 21:30:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-22 21:30:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 21:30:06,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:06,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514181684] [2023-11-22 21:30:06,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514181684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:06,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839950061] [2023-11-22 21:30:06,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:06,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:06,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:06,960 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) [2023-11-22 21:30:06,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-22 21:30:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-22 21:30:07,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-22 21:30:07,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:07,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839950061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:07,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:07,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2023-11-22 21:30:07,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070299187] [2023-11-22 21:30:07,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:07,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:30:07,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:07,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:30:07,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:30:07,215 INFO L87 Difference]: Start difference. First operand 1313 states and 2180 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:30:07,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:07,346 INFO L93 Difference]: Finished difference Result 2632 states and 4368 transitions. [2023-11-22 21:30:07,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:30:07,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2023-11-22 21:30:07,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:07,350 INFO L225 Difference]: With dead ends: 2632 [2023-11-22 21:30:07,350 INFO L226 Difference]: Without dead ends: 1332 [2023-11-22 21:30:07,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:30:07,353 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 134 mSDsluCounter, 4636 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:07,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5594 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:30:07,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2023-11-22 21:30:07,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1306. [2023-11-22 21:30:07,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1035 states have (on average 1.6772946859903382) internal successors, (1736), 1066 states have internal predecessors, (1736), 205 states have call successors, (205), 65 states have call predecessors, (205), 65 states have return successors, (223), 200 states have call predecessors, (223), 201 states have call successors, (223) [2023-11-22 21:30:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 2164 transitions. [2023-11-22 21:30:07,418 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 2164 transitions. Word has length 139 [2023-11-22 21:30:07,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:07,418 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 2164 transitions. [2023-11-22 21:30:07,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-22 21:30:07,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 2164 transitions. [2023-11-22 21:30:07,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-22 21:30:07,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:07,421 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:07,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:07,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:07,621 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:07,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:07,622 INFO L85 PathProgramCache]: Analyzing trace with hash -237489042, now seen corresponding path program 1 times [2023-11-22 21:30:07,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:07,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356727473] [2023-11-22 21:30:07,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:07,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:30:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 21:30:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 21:30:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 21:30:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 21:30:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 21:30:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 21:30:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-22 21:30:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,857 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 21:30:07,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:07,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356727473] [2023-11-22 21:30:07,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356727473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:07,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:30:07,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 21:30:07,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474004717] [2023-11-22 21:30:07,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:07,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 21:30:07,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:07,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 21:30:07,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:30:07,859 INFO L87 Difference]: Start difference. First operand 1306 states and 2164 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:30:11,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:11,301 INFO L93 Difference]: Finished difference Result 3007 states and 5031 transitions. [2023-11-22 21:30:11,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 21:30:11,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2023-11-22 21:30:11,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:11,307 INFO L225 Difference]: With dead ends: 3007 [2023-11-22 21:30:11,307 INFO L226 Difference]: Without dead ends: 1797 [2023-11-22 21:30:11,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-22 21:30:11,310 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1554 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 2691 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 2691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:11,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 1321 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 2691 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-22 21:30:11,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2023-11-22 21:30:11,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1366. [2023-11-22 21:30:11,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1081 states have (on average 1.6697502312673451) internal successors, (1805), 1112 states have internal predecessors, (1805), 217 states have call successors, (217), 65 states have call predecessors, (217), 67 states have return successors, (244), 212 states have call predecessors, (244), 213 states have call successors, (244) [2023-11-22 21:30:11,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2266 transitions. [2023-11-22 21:30:11,439 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2266 transitions. Word has length 140 [2023-11-22 21:30:11,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:11,439 INFO L495 AbstractCegarLoop]: Abstraction has 1366 states and 2266 transitions. [2023-11-22 21:30:11,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:30:11,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2266 transitions. [2023-11-22 21:30:11,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-22 21:30:11,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:11,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:11,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-22 21:30:11,442 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:11,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:11,442 INFO L85 PathProgramCache]: Analyzing trace with hash -936224742, now seen corresponding path program 1 times [2023-11-22 21:30:11,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:11,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062970580] [2023-11-22 21:30:11,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:11,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:30:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:30:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 21:30:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 21:30:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 21:30:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 21:30:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 21:30:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 21:30:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-22 21:30:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-22 21:30:11,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:11,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062970580] [2023-11-22 21:30:11,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062970580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:11,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:30:11,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 21:30:11,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256389075] [2023-11-22 21:30:11,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:11,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 21:30:11,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:11,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 21:30:11,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:30:11,641 INFO L87 Difference]: Start difference. First operand 1366 states and 2266 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:30:14,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:14,995 INFO L93 Difference]: Finished difference Result 3094 states and 5171 transitions. [2023-11-22 21:30:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 21:30:14,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2023-11-22 21:30:14,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:15,000 INFO L225 Difference]: With dead ends: 3094 [2023-11-22 21:30:15,000 INFO L226 Difference]: Without dead ends: 1733 [2023-11-22 21:30:15,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:30:15,003 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 1487 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 2748 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 2748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:15,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 1299 Invalid, 3179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 2748 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-22 21:30:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2023-11-22 21:30:15,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1339. [2023-11-22 21:30:15,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1057 states have (on average 1.6650898770104068) internal successors, (1760), 1086 states have internal predecessors, (1760), 216 states have call successors, (216), 65 states have call predecessors, (216), 65 states have return successors, (241), 211 states have call predecessors, (241), 212 states have call successors, (241) [2023-11-22 21:30:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 2217 transitions. [2023-11-22 21:30:15,127 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 2217 transitions. Word has length 140 [2023-11-22 21:30:15,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:15,127 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 2217 transitions. [2023-11-22 21:30:15,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:30:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 2217 transitions. [2023-11-22 21:30:15,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-22 21:30:15,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:15,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:15,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-22 21:30:15,130 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:15,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:15,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1130875358, now seen corresponding path program 1 times [2023-11-22 21:30:15,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:15,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776353840] [2023-11-22 21:30:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:15,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:30:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:30:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:30:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 21:30:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 21:30:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 21:30:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-22 21:30:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-22 21:30:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-22 21:30:15,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:15,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776353840] [2023-11-22 21:30:15,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776353840] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:15,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530323253] [2023-11-22 21:30:15,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:15,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:15,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:15,640 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:15,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-22 21:30:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:15,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-22 21:30:15,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-22 21:30:15,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:15,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530323253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:15,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:15,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-11-22 21:30:15,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172580376] [2023-11-22 21:30:15,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:15,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:30:15,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:15,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:30:16,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:30:16,000 INFO L87 Difference]: Start difference. First operand 1339 states and 2217 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:30:16,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:16,479 INFO L93 Difference]: Finished difference Result 2617 states and 4379 transitions. [2023-11-22 21:30:16,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:30:16,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2023-11-22 21:30:16,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:16,483 INFO L225 Difference]: With dead ends: 2617 [2023-11-22 21:30:16,484 INFO L226 Difference]: Without dead ends: 1359 [2023-11-22 21:30:16,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-22 21:30:16,487 INFO L413 NwaCegarLoop]: 1099 mSDtfsCounter, 902 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 3999 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:16,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 3999 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 21:30:16,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2023-11-22 21:30:16,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1349. [2023-11-22 21:30:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1063 states have (on average 1.6613358419567263) internal successors, (1766), 1095 states have internal predecessors, (1766), 218 states have call successors, (218), 66 states have call predecessors, (218), 67 states have return successors, (251), 211 states have call predecessors, (251), 214 states have call successors, (251) [2023-11-22 21:30:16,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 2235 transitions. [2023-11-22 21:30:16,648 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 2235 transitions. Word has length 141 [2023-11-22 21:30:16,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:16,649 INFO L495 AbstractCegarLoop]: Abstraction has 1349 states and 2235 transitions. [2023-11-22 21:30:16,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 21:30:16,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 2235 transitions. [2023-11-22 21:30:16,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-22 21:30:16,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:16,652 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:16,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:16,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-22 21:30:16,864 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:16,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:16,865 INFO L85 PathProgramCache]: Analyzing trace with hash -950133126, now seen corresponding path program 1 times [2023-11-22 21:30:16,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:16,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567321220] [2023-11-22 21:30:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:16,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:30:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:30:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:30:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 21:30:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 21:30:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 21:30:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 21:30:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-22 21:30:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-22 21:30:17,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:17,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567321220] [2023-11-22 21:30:17,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567321220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:17,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214149210] [2023-11-22 21:30:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:17,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:17,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:17,280 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:17,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-22 21:30:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:17,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 21:30:17,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-22 21:30:17,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:17,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214149210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:17,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:17,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-11-22 21:30:17,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938311368] [2023-11-22 21:30:17,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:17,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 21:30:17,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:17,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 21:30:17,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-22 21:30:17,589 INFO L87 Difference]: Start difference. First operand 1349 states and 2235 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:18,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:18,102 INFO L93 Difference]: Finished difference Result 3245 states and 5443 transitions. [2023-11-22 21:30:18,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:30:18,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2023-11-22 21:30:18,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:18,108 INFO L225 Difference]: With dead ends: 3245 [2023-11-22 21:30:18,109 INFO L226 Difference]: Without dead ends: 1978 [2023-11-22 21:30:18,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-11-22 21:30:18,111 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 923 mSDsluCounter, 5166 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 6914 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:18,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 6914 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 21:30:18,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2023-11-22 21:30:18,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1968. [2023-11-22 21:30:18,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1551 states have (on average 1.6666666666666667) internal successors, (2585), 1595 states have internal predecessors, (2585), 320 states have call successors, (320), 95 states have call predecessors, (320), 96 states have return successors, (377), 313 states have call predecessors, (377), 315 states have call successors, (377) [2023-11-22 21:30:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 3282 transitions. [2023-11-22 21:30:18,290 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 3282 transitions. Word has length 145 [2023-11-22 21:30:18,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:18,290 INFO L495 AbstractCegarLoop]: Abstraction has 1968 states and 3282 transitions. [2023-11-22 21:30:18,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:18,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 3282 transitions. [2023-11-22 21:30:18,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-22 21:30:18,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:18,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:18,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-22 21:30:18,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-22 21:30:18,505 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:18,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:18,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1376973386, now seen corresponding path program 1 times [2023-11-22 21:30:18,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:18,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611725665] [2023-11-22 21:30:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:18,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:30:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:30:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:30:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 21:30:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 21:30:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 21:30:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 21:30:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-22 21:30:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-22 21:30:18,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:18,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611725665] [2023-11-22 21:30:18,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611725665] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:18,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381394926] [2023-11-22 21:30:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:18,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:18,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:18,926 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:18,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-22 21:30:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:19,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 21:30:19,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-22 21:30:19,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:19,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381394926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:19,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:19,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2023-11-22 21:30:19,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009507966] [2023-11-22 21:30:19,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:19,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:30:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:30:19,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:30:19,195 INFO L87 Difference]: Start difference. First operand 1968 states and 3282 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:19,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:19,436 INFO L93 Difference]: Finished difference Result 3873 states and 6545 transitions. [2023-11-22 21:30:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:30:19,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2023-11-22 21:30:19,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:19,450 INFO L225 Difference]: With dead ends: 3873 [2023-11-22 21:30:19,450 INFO L226 Difference]: Without dead ends: 1986 [2023-11-22 21:30:19,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:30:19,456 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 85 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:19,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2775 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:30:19,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2023-11-22 21:30:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1986. [2023-11-22 21:30:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1566 states have (on average 1.6621966794380587) internal successors, (2603), 1610 states have internal predecessors, (2603), 320 states have call successors, (320), 98 states have call predecessors, (320), 99 states have return successors, (377), 313 states have call predecessors, (377), 315 states have call successors, (377) [2023-11-22 21:30:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 3300 transitions. [2023-11-22 21:30:19,708 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 3300 transitions. Word has length 145 [2023-11-22 21:30:19,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:19,708 INFO L495 AbstractCegarLoop]: Abstraction has 1986 states and 3300 transitions. [2023-11-22 21:30:19,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:19,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 3300 transitions. [2023-11-22 21:30:19,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 21:30:19,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:19,711 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:19,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:19,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-22 21:30:19,923 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:19,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:19,923 INFO L85 PathProgramCache]: Analyzing trace with hash 924852909, now seen corresponding path program 1 times [2023-11-22 21:30:19,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:19,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449600166] [2023-11-22 21:30:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:19,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:30:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:30:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:30:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 21:30:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 21:30:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 21:30:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-22 21:30:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-22 21:30:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-22 21:30:20,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:20,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449600166] [2023-11-22 21:30:20,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449600166] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:20,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599213056] [2023-11-22 21:30:20,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:20,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:20,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:20,296 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:20,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-22 21:30:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 21:30:20,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-22 21:30:20,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:20,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599213056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:20,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:20,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-11-22 21:30:20,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972941365] [2023-11-22 21:30:20,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:20,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:30:20,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:30:20,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:30:20,719 INFO L87 Difference]: Start difference. First operand 1986 states and 3300 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-22 21:30:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:24,402 INFO L93 Difference]: Finished difference Result 6740 states and 11447 transitions. [2023-11-22 21:30:24,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 21:30:24,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 147 [2023-11-22 21:30:24,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:24,417 INFO L225 Difference]: With dead ends: 6740 [2023-11-22 21:30:24,417 INFO L226 Difference]: Without dead ends: 4835 [2023-11-22 21:30:24,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-11-22 21:30:24,425 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 3392 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 5763 mSolverCounterSat, 849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 6612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 849 IncrementalHoareTripleChecker+Valid, 5763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:24,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3511 Valid, 1458 Invalid, 6612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [849 Valid, 5763 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-22 21:30:24,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4835 states. [2023-11-22 21:30:24,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4835 to 4577. [2023-11-22 21:30:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4577 states, 3600 states have (on average 1.6544444444444444) internal successors, (5956), 3699 states have internal predecessors, (5956), 733 states have call successors, (733), 244 states have call predecessors, (733), 243 states have return successors, (951), 717 states have call predecessors, (951), 724 states have call successors, (951) [2023-11-22 21:30:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 7640 transitions. [2023-11-22 21:30:24,899 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 7640 transitions. Word has length 147 [2023-11-22 21:30:24,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:24,899 INFO L495 AbstractCegarLoop]: Abstraction has 4577 states and 7640 transitions. [2023-11-22 21:30:24,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-22 21:30:24,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 7640 transitions. [2023-11-22 21:30:24,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-22 21:30:24,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:24,902 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:24,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-22 21:30:25,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-22 21:30:25,115 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:25,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:25,115 INFO L85 PathProgramCache]: Analyzing trace with hash -838744059, now seen corresponding path program 1 times [2023-11-22 21:30:25,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:25,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521362273] [2023-11-22 21:30:25,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:25,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:30:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:30:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:30:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 21:30:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 21:30:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 21:30:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 21:30:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 21:30:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,473 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-22 21:30:25,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:25,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521362273] [2023-11-22 21:30:25,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521362273] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:25,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760727157] [2023-11-22 21:30:25,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:25,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:25,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:25,475 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:25,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-22 21:30:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 21:30:25,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-22 21:30:25,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:25,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760727157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:25,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:25,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-11-22 21:30:25,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511231108] [2023-11-22 21:30:25,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:25,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 21:30:25,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:25,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 21:30:25,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-22 21:30:25,893 INFO L87 Difference]: Start difference. First operand 4577 states and 7640 transitions. Second operand has 6 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-22 21:30:26,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:26,977 INFO L93 Difference]: Finished difference Result 10292 states and 17359 transitions. [2023-11-22 21:30:26,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:30:26,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 148 [2023-11-22 21:30:26,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:26,995 INFO L225 Difference]: With dead ends: 10292 [2023-11-22 21:30:26,995 INFO L226 Difference]: Without dead ends: 5782 [2023-11-22 21:30:27,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-11-22 21:30:27,007 INFO L413 NwaCegarLoop]: 1258 mSDtfsCounter, 1716 mSDsluCounter, 4125 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 5383 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:27,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 5383 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 21:30:27,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5782 states. [2023-11-22 21:30:27,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5782 to 5767. [2023-11-22 21:30:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 4615 states have (on average 1.6463705308775731) internal successors, (7598), 4716 states have internal predecessors, (7598), 815 states have call successors, (815), 336 states have call predecessors, (815), 336 states have return successors, (1283), 798 states have call predecessors, (1283), 800 states have call successors, (1283) [2023-11-22 21:30:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 9696 transitions. [2023-11-22 21:30:27,566 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 9696 transitions. Word has length 148 [2023-11-22 21:30:27,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:27,566 INFO L495 AbstractCegarLoop]: Abstraction has 5767 states and 9696 transitions. [2023-11-22 21:30:27,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-22 21:30:27,566 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 9696 transitions. [2023-11-22 21:30:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-22 21:30:27,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:27,569 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:27,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:27,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:27,783 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:27,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:27,783 INFO L85 PathProgramCache]: Analyzing trace with hash -337914263, now seen corresponding path program 1 times [2023-11-22 21:30:27,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:27,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888575172] [2023-11-22 21:30:27,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:27,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:27,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:30:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:30:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:30:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 21:30:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 21:30:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 21:30:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-22 21:30:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-22 21:30:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-22 21:30:28,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:28,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888575172] [2023-11-22 21:30:28,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888575172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:28,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121131813] [2023-11-22 21:30:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:28,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:28,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:28,130 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:28,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-22 21:30:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:28,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 21:30:28,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 21:30:28,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:28,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121131813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:28,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:28,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-11-22 21:30:28,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366216] [2023-11-22 21:30:28,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:28,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:30:28,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:28,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:30:28,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:30:28,500 INFO L87 Difference]: Start difference. First operand 5767 states and 9696 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-22 21:30:32,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:32,206 INFO L93 Difference]: Finished difference Result 11174 states and 18815 transitions. [2023-11-22 21:30:32,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 21:30:32,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 150 [2023-11-22 21:30:32,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:32,224 INFO L225 Difference]: With dead ends: 11174 [2023-11-22 21:30:32,224 INFO L226 Difference]: Without dead ends: 6202 [2023-11-22 21:30:32,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-11-22 21:30:32,238 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 3119 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 5212 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3238 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 5938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 5212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:32,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3238 Valid, 1460 Invalid, 5938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 5212 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-22 21:30:32,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6202 states. [2023-11-22 21:30:32,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6202 to 5763. [2023-11-22 21:30:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5763 states, 4611 states have (on average 1.6451962697896334) internal successors, (7586), 4712 states have internal predecessors, (7586), 815 states have call successors, (815), 336 states have call predecessors, (815), 336 states have return successors, (1283), 798 states have call predecessors, (1283), 800 states have call successors, (1283) [2023-11-22 21:30:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5763 states to 5763 states and 9684 transitions. [2023-11-22 21:30:32,818 INFO L78 Accepts]: Start accepts. Automaton has 5763 states and 9684 transitions. Word has length 150 [2023-11-22 21:30:32,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:32,818 INFO L495 AbstractCegarLoop]: Abstraction has 5763 states and 9684 transitions. [2023-11-22 21:30:32,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-22 21:30:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5763 states and 9684 transitions. [2023-11-22 21:30:32,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-22 21:30:32,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:32,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:32,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-22 21:30:33,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:33,023 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:33,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:33,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1607439277, now seen corresponding path program 1 times [2023-11-22 21:30:33,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:33,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609636096] [2023-11-22 21:30:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:33,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:30:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:30:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:30:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 21:30:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 21:30:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 21:30:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-22 21:30:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-22 21:30:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-22 21:30:33,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:33,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609636096] [2023-11-22 21:30:33,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609636096] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:33,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881806844] [2023-11-22 21:30:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:33,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:33,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:33,357 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:33,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-22 21:30:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:33,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 21:30:33,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:33,603 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 21:30:33,604 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:33,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881806844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:33,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:33,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2023-11-22 21:30:33,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094787790] [2023-11-22 21:30:33,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:33,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:30:33,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:33,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:30:33,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:30:33,605 INFO L87 Difference]: Start difference. First operand 5763 states and 9684 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:34,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:34,197 INFO L93 Difference]: Finished difference Result 11480 states and 19718 transitions. [2023-11-22 21:30:34,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:30:34,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2023-11-22 21:30:34,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:34,218 INFO L225 Difference]: With dead ends: 11480 [2023-11-22 21:30:34,218 INFO L226 Difference]: Without dead ends: 5750 [2023-11-22 21:30:34,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:30:34,240 INFO L413 NwaCegarLoop]: 953 mSDtfsCounter, 91 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:34,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 2771 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:30:34,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5750 states. [2023-11-22 21:30:34,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5750 to 5750. [2023-11-22 21:30:34,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5750 states, 4598 states have (on average 1.6385384949978252) internal successors, (7534), 4699 states have internal predecessors, (7534), 815 states have call successors, (815), 336 states have call predecessors, (815), 336 states have return successors, (1283), 798 states have call predecessors, (1283), 800 states have call successors, (1283) [2023-11-22 21:30:34,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5750 states to 5750 states and 9632 transitions. [2023-11-22 21:30:34,868 INFO L78 Accepts]: Start accepts. Automaton has 5750 states and 9632 transitions. Word has length 152 [2023-11-22 21:30:34,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:34,869 INFO L495 AbstractCegarLoop]: Abstraction has 5750 states and 9632 transitions. [2023-11-22 21:30:34,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:34,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5750 states and 9632 transitions. [2023-11-22 21:30:34,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-22 21:30:34,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:34,871 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:34,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-22 21:30:35,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-22 21:30:35,081 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:35,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:35,081 INFO L85 PathProgramCache]: Analyzing trace with hash -722614023, now seen corresponding path program 1 times [2023-11-22 21:30:35,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:35,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169429337] [2023-11-22 21:30:35,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:35,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:30:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:30:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:30:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 21:30:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 21:30:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 21:30:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-22 21:30:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-22 21:30:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 21:30:35,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:35,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169429337] [2023-11-22 21:30:35,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169429337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:35,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821062747] [2023-11-22 21:30:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:35,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:35,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:35,413 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:35,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-22 21:30:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:35,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 21:30:35,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 21:30:35,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:35,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821062747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:35,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:35,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-11-22 21:30:35,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874886651] [2023-11-22 21:30:35,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:35,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:30:35,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:35,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:30:35,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:30:35,776 INFO L87 Difference]: Start difference. First operand 5750 states and 9632 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-22 21:30:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:40,022 INFO L93 Difference]: Finished difference Result 17212 states and 30202 transitions. [2023-11-22 21:30:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 21:30:40,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 153 [2023-11-22 21:30:40,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:40,060 INFO L225 Difference]: With dead ends: 17212 [2023-11-22 21:30:40,060 INFO L226 Difference]: Without dead ends: 11540 [2023-11-22 21:30:40,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2023-11-22 21:30:40,088 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 5301 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 3686 mSolverCounterSat, 1435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5414 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 5121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1435 IncrementalHoareTripleChecker+Valid, 3686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:40,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5414 Valid, 1073 Invalid, 5121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1435 Valid, 3686 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-22 21:30:40,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11540 states. [2023-11-22 21:30:41,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11540 to 10202. [2023-11-22 21:30:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10202 states, 8132 states have (on average 1.6101819970486966) internal successors, (13094), 8320 states have internal predecessors, (13094), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 620 states have return successors, (2259), 1426 states have call predecessors, (2259), 1430 states have call successors, (2259) [2023-11-22 21:30:41,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10202 states to 10202 states and 16802 transitions. [2023-11-22 21:30:41,276 INFO L78 Accepts]: Start accepts. Automaton has 10202 states and 16802 transitions. Word has length 153 [2023-11-22 21:30:41,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:41,276 INFO L495 AbstractCegarLoop]: Abstraction has 10202 states and 16802 transitions. [2023-11-22 21:30:41,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-22 21:30:41,277 INFO L276 IsEmpty]: Start isEmpty. Operand 10202 states and 16802 transitions. [2023-11-22 21:30:41,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-22 21:30:41,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:41,278 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:41,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-22 21:30:41,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:41,479 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:41,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:41,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1240402166, now seen corresponding path program 1 times [2023-11-22 21:30:41,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:41,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701892814] [2023-11-22 21:30:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:41,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:30:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:30:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:30:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 21:30:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 21:30:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 21:30:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-22 21:30:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 21:30:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 21:30:41,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:41,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701892814] [2023-11-22 21:30:41,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701892814] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:41,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595434100] [2023-11-22 21:30:41,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:41,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:41,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:41,817 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:41,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-22 21:30:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:42,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 21:30:42,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 21:30:42,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:42,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595434100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:42,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:42,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-11-22 21:30:42,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151032084] [2023-11-22 21:30:42,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:42,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:30:42,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:42,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:30:42,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:30:42,196 INFO L87 Difference]: Start difference. First operand 10202 states and 16802 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-22 21:30:46,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:46,985 INFO L93 Difference]: Finished difference Result 20223 states and 33514 transitions. [2023-11-22 21:30:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 21:30:46,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 154 [2023-11-22 21:30:46,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:47,022 INFO L225 Difference]: With dead ends: 20223 [2023-11-22 21:30:47,023 INFO L226 Difference]: Without dead ends: 10892 [2023-11-22 21:30:47,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-11-22 21:30:47,057 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 2927 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 6411 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3048 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 7091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 6411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:47,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3048 Valid, 1792 Invalid, 7091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 6411 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-22 21:30:47,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10892 states. [2023-11-22 21:30:48,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10892 to 10190. [2023-11-22 21:30:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10190 states, 8120 states have (on average 1.608128078817734) internal successors, (13058), 8308 states have internal predecessors, (13058), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 620 states have return successors, (2259), 1426 states have call predecessors, (2259), 1430 states have call successors, (2259) [2023-11-22 21:30:48,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10190 states to 10190 states and 16766 transitions. [2023-11-22 21:30:48,151 INFO L78 Accepts]: Start accepts. Automaton has 10190 states and 16766 transitions. Word has length 154 [2023-11-22 21:30:48,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:48,152 INFO L495 AbstractCegarLoop]: Abstraction has 10190 states and 16766 transitions. [2023-11-22 21:30:48,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-22 21:30:48,152 INFO L276 IsEmpty]: Start isEmpty. Operand 10190 states and 16766 transitions. [2023-11-22 21:30:48,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-22 21:30:48,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:48,154 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:48,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-22 21:30:48,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:48,355 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:48,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:48,355 INFO L85 PathProgramCache]: Analyzing trace with hash 324025484, now seen corresponding path program 1 times [2023-11-22 21:30:48,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:48,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897054872] [2023-11-22 21:30:48,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:48,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:30:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:30:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:30:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 21:30:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 21:30:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 21:30:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-22 21:30:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-22 21:30:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,754 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 21:30:48,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:48,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897054872] [2023-11-22 21:30:48,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897054872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:48,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162340149] [2023-11-22 21:30:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:48,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:48,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:48,755 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:48,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-22 21:30:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:48,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 21:30:48,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:48,991 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 21:30:48,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:48,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162340149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:48,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:48,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-11-22 21:30:48,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576701725] [2023-11-22 21:30:48,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:48,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:30:48,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:48,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:30:48,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:30:48,993 INFO L87 Difference]: Start difference. First operand 10190 states and 16766 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:50,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:50,094 INFO L93 Difference]: Finished difference Result 20470 states and 34054 transitions. [2023-11-22 21:30:50,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:30:50,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 156 [2023-11-22 21:30:50,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:50,122 INFO L225 Difference]: With dead ends: 20470 [2023-11-22 21:30:50,122 INFO L226 Difference]: Without dead ends: 10365 [2023-11-22 21:30:50,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:30:50,150 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 1 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3833 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:50,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3833 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:30:50,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10365 states. [2023-11-22 21:30:51,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10365 to 10266. [2023-11-22 21:30:51,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10266 states, 8183 states have (on average 1.6034461688867163) internal successors, (13121), 8359 states have internal predecessors, (13121), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 633 states have return successors, (2284), 1451 states have call predecessors, (2284), 1430 states have call successors, (2284) [2023-11-22 21:30:51,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10266 states to 10266 states and 16854 transitions. [2023-11-22 21:30:51,231 INFO L78 Accepts]: Start accepts. Automaton has 10266 states and 16854 transitions. Word has length 156 [2023-11-22 21:30:51,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:51,232 INFO L495 AbstractCegarLoop]: Abstraction has 10266 states and 16854 transitions. [2023-11-22 21:30:51,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:51,232 INFO L276 IsEmpty]: Start isEmpty. Operand 10266 states and 16854 transitions. [2023-11-22 21:30:51,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-22 21:30:51,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:51,235 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:51,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:51,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-22 21:30:51,443 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:51,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:51,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1404976365, now seen corresponding path program 1 times [2023-11-22 21:30:51,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:51,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297771552] [2023-11-22 21:30:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:51,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:30:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:30:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:30:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 21:30:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 21:30:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 21:30:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-22 21:30:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-22 21:30:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-22 21:30:51,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:51,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297771552] [2023-11-22 21:30:51,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297771552] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:51,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100832801] [2023-11-22 21:30:51,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:51,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:51,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:51,793 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:51,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-22 21:30:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:52,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:30:52,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:52,202 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 21:30:52,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:30:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-22 21:30:52,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100832801] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:30:52,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:30:52,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 24 [2023-11-22 21:30:52,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254687563] [2023-11-22 21:30:52,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:30:52,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-22 21:30:52,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:52,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-22 21:30:52,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2023-11-22 21:30:52,443 INFO L87 Difference]: Start difference. First operand 10266 states and 16854 transitions. Second operand has 24 states, 23 states have (on average 11.26086956521739) internal successors, (259), 20 states have internal predecessors, (259), 9 states have call successors, (51), 9 states have call predecessors, (51), 11 states have return successors, (48), 12 states have call predecessors, (48), 9 states have call successors, (48) [2023-11-22 21:32:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:32:01,015 INFO L93 Difference]: Finished difference Result 94724 states and 201010 transitions. [2023-11-22 21:32:01,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-11-22 21:32:01,016 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 11.26086956521739) internal successors, (259), 20 states have internal predecessors, (259), 9 states have call successors, (51), 9 states have call predecessors, (51), 11 states have return successors, (48), 12 states have call predecessors, (48), 9 states have call successors, (48) Word has length 161 [2023-11-22 21:32:01,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:32:01,665 INFO L225 Difference]: With dead ends: 94724 [2023-11-22 21:32:01,666 INFO L226 Difference]: Without dead ends: 84483 [2023-11-22 21:32:01,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 416 SyntacticMatches, 2 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21812 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=7539, Invalid=38901, Unknown=0, NotChecked=0, Total=46440 [2023-11-22 21:32:01,907 INFO L413 NwaCegarLoop]: 2178 mSDtfsCounter, 25672 mSDsluCounter, 18291 mSDsCounter, 0 mSdLazyCounter, 47187 mSolverCounterSat, 11094 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25700 SdHoareTripleChecker+Valid, 20469 SdHoareTripleChecker+Invalid, 58281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 11094 IncrementalHoareTripleChecker+Valid, 47187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2023-11-22 21:32:01,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25700 Valid, 20469 Invalid, 58281 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [11094 Valid, 47187 Invalid, 0 Unknown, 0 Unchecked, 35.8s Time] [2023-11-22 21:32:01,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84483 states. [2023-11-22 21:32:09,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84483 to 48661. [2023-11-22 21:32:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48661 states, 37964 states have (on average 1.580154883573912) internal successors, (59989), 39258 states have internal predecessors, (59989), 7456 states have call successors, (7456), 2699 states have call predecessors, (7456), 3240 states have return successors, (12464), 7602 states have call predecessors, (12464), 7416 states have call successors, (12464) [2023-11-22 21:32:09,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48661 states to 48661 states and 79909 transitions. [2023-11-22 21:32:09,913 INFO L78 Accepts]: Start accepts. Automaton has 48661 states and 79909 transitions. Word has length 161 [2023-11-22 21:32:09,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:32:09,914 INFO L495 AbstractCegarLoop]: Abstraction has 48661 states and 79909 transitions. [2023-11-22 21:32:09,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 11.26086956521739) internal successors, (259), 20 states have internal predecessors, (259), 9 states have call successors, (51), 9 states have call predecessors, (51), 11 states have return successors, (48), 12 states have call predecessors, (48), 9 states have call successors, (48) [2023-11-22 21:32:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 48661 states and 79909 transitions. [2023-11-22 21:32:09,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-22 21:32:09,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:32:09,920 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:32:09,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-22 21:32:10,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-22 21:32:10,121 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:32:10,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:32:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash -403292265, now seen corresponding path program 1 times [2023-11-22 21:32:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:32:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652666695] [2023-11-22 21:32:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:32:10,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:32:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:32:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:32:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:32:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:32:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 21:32:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 21:32:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-22 21:32:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 21:32:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:32:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 21:32:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:32:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 21:32:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-22 21:32:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-22 21:32:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 21:32:10,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:32:10,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652666695] [2023-11-22 21:32:10,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652666695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:32:10,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462417892] [2023-11-22 21:32:10,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:32:10,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:32:10,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:32:10,355 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:32:10,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-22 21:32:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:10,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:32:10,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:32:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-22 21:32:10,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:32:10,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462417892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:32:10,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:32:10,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-22 21:32:10,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827580650] [2023-11-22 21:32:10,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:32:10,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:32:10,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:32:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:32:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-22 21:32:10,641 INFO L87 Difference]: Start difference. First operand 48661 states and 79909 transitions. Second operand has 8 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17)