./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec13_product31.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 2e77838346608929bef5ad1e655ea0710d74ebb9f10b29169ab985d305812d92 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:11:31,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:11:31,615 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:11:31,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:11:31,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:11:31,642 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:11:31,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:11:31,643 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:11:31,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:11:31,643 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:11:31,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:11:31,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:11:31,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:11:31,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:11:31,645 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:11:31,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:11:31,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:11:31,645 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:11:31,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:11:31,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:11:31,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:11:31,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:11:31,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:11:31,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:11:31,646 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:11:31,646 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:11:31,646 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:11:31,646 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:11:31,646 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:11:31,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:11:31,647 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:11:31,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:11:31,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:11:31,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:11:31,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:11:31,647 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:11:31,647 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:11:31,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:11:31,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:11:31,647 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:11:31,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:11:31,648 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:11:31,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:11:31,648 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 2e77838346608929bef5ad1e655ea0710d74ebb9f10b29169ab985d305812d92 [2025-03-03 14:11:31,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:11:31,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:11:31,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:11:31,906 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:11:31,906 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:11:31,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c [2025-03-03 14:11:33,056 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bddce608d/a9e378d33952485dba73a0b435c803fe/FLAG54c07d9eb [2025-03-03 14:11:33,399 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:11:33,399 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c [2025-03-03 14:11:33,420 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bddce608d/a9e378d33952485dba73a0b435c803fe/FLAG54c07d9eb [2025-03-03 14:11:33,439 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bddce608d/a9e378d33952485dba73a0b435c803fe [2025-03-03 14:11:33,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:11:33,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:11:33,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:11:33,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:11:33,449 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:11:33,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:11:33" (1/1) ... [2025-03-03 14:11:33,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e94045c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:33, skipping insertion in model container [2025-03-03 14:11:33,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:11:33" (1/1) ... [2025-03-03 14:11:33,503 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:11:33,632 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c[1546,1559] [2025-03-03 14:11:33,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:11:33,949 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:11:33,955 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2025-03-03 14:11:33,957 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [57] [2025-03-03 14:11:33,957 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [423] [2025-03-03 14:11:33,957 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [517] [2025-03-03 14:11:33,958 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [638] [2025-03-03 14:11:33,958 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1306] [2025-03-03 14:11:33,958 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1664] [2025-03-03 14:11:33,958 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1679] [2025-03-03 14:11:33,959 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1714] [2025-03-03 14:11:33,959 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3329] [2025-03-03 14:11:33,961 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c[1546,1559] [2025-03-03 14:11:34,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:11:34,072 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:11:34,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:34 WrapperNode [2025-03-03 14:11:34,073 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:11:34,074 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:11:34,074 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:11:34,074 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:11:34,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:34" (1/1) ... [2025-03-03 14:11:34,096 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:34" (1/1) ... [2025-03-03 14:11:34,124 INFO L138 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 913 [2025-03-03 14:11:34,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:11:34,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:11:34,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:11:34,125 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:11:34,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:34" (1/1) ... [2025-03-03 14:11:34,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:34" (1/1) ... [2025-03-03 14:11:34,138 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:34" (1/1) ... [2025-03-03 14:11:34,168 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-03 14:11:34,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:34" (1/1) ... [2025-03-03 14:11:34,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:34" (1/1) ... [2025-03-03 14:11:34,182 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:34" (1/1) ... [2025-03-03 14:11:34,184 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:34" (1/1) ... [2025-03-03 14:11:34,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:34" (1/1) ... [2025-03-03 14:11:34,195 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:34" (1/1) ... [2025-03-03 14:11:34,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:11:34,204 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:11:34,205 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:11:34,205 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:11:34,209 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:34" (1/1) ... [2025-03-03 14:11:34,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:11:34,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:34,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 14:11:34,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 14:11:34,262 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-03-03 14:11:34,262 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-03-03 14:11:34,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:11:34,262 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-03 14:11:34,262 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-03 14:11:34,262 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-03 14:11:34,262 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-03 14:11:34,262 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-03 14:11:34,263 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-03 14:11:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2025-03-03 14:11:34,263 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2025-03-03 14:11:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-03 14:11:34,264 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-03 14:11:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-03 14:11:34,264 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-03 14:11:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-03 14:11:34,264 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-03 14:11:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-03 14:11:34,265 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-03 14:11:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-03 14:11:34,265 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-03 14:11:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-03-03 14:11:34,265 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-03-03 14:11:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-03 14:11:34,265 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-03 14:11:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-03 14:11:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-03 14:11:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-03 14:11:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-03 14:11:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-03 14:11:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-03 14:11:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-03 14:11:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-03 14:11:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-03 14:11:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-03 14:11:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-03 14:11:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-03 14:11:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-03 14:11:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-03 14:11:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-03 14:11:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-03 14:11:34,267 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-03 14:11:34,267 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-03 14:11:34,267 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-03 14:11:34,267 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-03 14:11:34,267 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-03 14:11:34,267 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-03 14:11:34,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-03 14:11:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:11:34,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:11:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-03 14:11:34,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-03 14:11:34,438 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:11:34,443 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:11:34,521 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2688: #res#1 := ~retValue_acc~26#1; [2025-03-03 14:11:34,521 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2660-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~25#1; [2025-03-03 14:11:34,524 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2016: #res := ~retValue_acc~17; [2025-03-03 14:11:34,542 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L557: #res := ~retValue_acc~3; [2025-03-03 14:11:34,637 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3306: #res := ~retValue_acc~29; [2025-03-03 14:11:34,660 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3317: #res := ~retValue_acc~30; [2025-03-03 14:11:34,722 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2604-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~24#1; [2025-03-03 14:11:34,722 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2541-1: stopRequestedInDirection__wrappee__twothirdsfull_#res#1 := stopRequestedInDirection__wrappee__twothirdsfull_~retValue_acc~22#1; [2025-03-03 14:11:34,723 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2570: #res#1 := ~retValue_acc~23#1; [2025-03-03 14:11:34,732 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2733: #res := ~retValue_acc~28; [2025-03-03 14:11:34,842 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2501: #res := ~retValue_acc~21; [2025-03-03 14:11:34,887 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2136-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~19#1; [2025-03-03 14:11:34,887 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2149-1: isIdle_#res#1 := isIdle_~retValue_acc~20#1; [2025-03-03 14:11:35,051 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2719-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~27#1; [2025-03-03 14:11:35,057 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1303: #res := ~retValue_acc~8; [2025-03-03 14:11:35,071 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L635: #res := ~retValue_acc~5; [2025-03-03 14:11:35,074 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1791: #res := ~retValue_acc~13; [2025-03-03 14:11:35,076 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1964: #res := ~retValue_acc~14; [2025-03-03 14:11:35,224 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L596: #res := ~retValue_acc~4; [2025-03-03 14:11:35,243 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2007: #res := ~retValue_acc~16; [2025-03-03 14:11:35,289 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2056-1: isEmpty_#res#1 := isEmpty_~retValue_acc~18#1; [2025-03-03 14:11:35,339 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L992: #res := ~retValue_acc~7; [2025-03-03 14:11:35,407 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1661-1: main_#res#1 := main_~retValue_acc~10#1; [2025-03-03 14:11:35,407 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1711-1: valid_product_#res#1 := valid_product_~retValue_acc~12#1; [2025-03-03 14:11:35,416 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L756: #res := ~retValue_acc~6; [2025-03-03 14:11:35,536 INFO L? ?]: Removed 493 outVars from TransFormulas that were not future-live. [2025-03-03 14:11:35,536 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:11:35,557 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:11:35,557 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:11:35,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:11:35 BoogieIcfgContainer [2025-03-03 14:11:35,558 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:11:35,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:11:35,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:11:35,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:11:35,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:11:33" (1/3) ... [2025-03-03 14:11:35,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2fe3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:11:35, skipping insertion in model container [2025-03-03 14:11:35,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:34" (2/3) ... [2025-03-03 14:11:35,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2fe3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:11:35, skipping insertion in model container [2025-03-03 14:11:35,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:11:35" (3/3) ... [2025-03-03 14:11:35,564 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product31.cil.c [2025-03-03 14:11:35,578 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:11:35,582 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product31.cil.c that has 29 procedures, 627 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-03 14:11:35,645 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:11:35,654 INFO L333 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, 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;@4ea58658, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:11:35,654 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:11:35,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 627 states, 489 states have (on average 1.670756646216769) internal successors, (817), 507 states have internal predecessors, (817), 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) [2025-03-03 14:11:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-03 14:11:35,680 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:35,681 INFO L218 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] [2025-03-03 14:11:35,681 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:35,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:35,686 INFO L85 PathProgramCache]: Analyzing trace with hash 633119648, now seen corresponding path program 1 times [2025-03-03 14:11:35,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:35,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000558883] [2025-03-03 14:11:35,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:35,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:35,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-03 14:11:35,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 14:11:35,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:35,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 14:11:36,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:36,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000558883] [2025-03-03 14:11:36,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000558883] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:36,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740177866] [2025-03-03 14:11:36,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:36,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:36,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:36,190 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) [2025-03-03 14:11:36,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 14:11:36,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-03 14:11:36,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 14:11:36,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:36,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:36,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:11:36,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:36,548 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-03 14:11:36,548 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:36,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740177866] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:36,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:36,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:11:36,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119844763] [2025-03-03 14:11:36,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:36,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:36,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:36,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:36,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:11:36,571 INFO L87 Difference]: Start difference. First operand has 627 states, 489 states have (on average 1.670756646216769) internal successors, (817), 507 states have internal predecessors, (817), 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 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2025-03-03 14:11:36,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:36,728 INFO L93 Difference]: Finished difference Result 1253 states and 2082 transitions. [2025-03-03 14:11:36,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:36,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 131 [2025-03-03 14:11:36,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:36,746 INFO L225 Difference]: With dead ends: 1253 [2025-03-03 14:11:36,746 INFO L226 Difference]: Without dead ends: 626 [2025-03-03 14:11:36,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:11:36,758 INFO L435 NwaCegarLoop]: 1012 mSDtfsCounter, 17 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:36,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3028 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:36,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2025-03-03 14:11:36,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2025-03-03 14:11:36,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 490 states have (on average 1.663265306122449) internal successors, (815), 506 states have internal predecessors, (815), 108 states have call successors, (108), 29 states have call predecessors, (108), 27 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:11:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1028 transitions. [2025-03-03 14:11:36,858 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1028 transitions. Word has length 131 [2025-03-03 14:11:36,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:36,859 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 1028 transitions. [2025-03-03 14:11:36,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2025-03-03 14:11:36,859 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1028 transitions. [2025-03-03 14:11:36,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-03 14:11:36,868 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:36,869 INFO L218 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] [2025-03-03 14:11:36,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 14:11:37,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-03 14:11:37,071 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:37,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:37,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1797954780, now seen corresponding path program 1 times [2025-03-03 14:11:37,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:37,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524393848] [2025-03-03 14:11:37,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:37,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:37,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-03 14:11:37,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-03 14:11:37,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:37,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:11:37,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:37,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524393848] [2025-03-03 14:11:37,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524393848] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:37,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309103965] [2025-03-03 14:11:37,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:37,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:37,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:37,325 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) [2025-03-03 14:11:37,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 14:11:37,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-03 14:11:37,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-03 14:11:37,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:37,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:37,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:11:37,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:11:37,655 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:37,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309103965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:37,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:37,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-03 14:11:37,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026477077] [2025-03-03 14:11:37,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:37,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:37,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:37,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:37,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:11:37,658 INFO L87 Difference]: Start difference. First operand 626 states and 1028 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2025-03-03 14:11:37,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:37,881 INFO L93 Difference]: Finished difference Result 1305 states and 2160 transitions. [2025-03-03 14:11:37,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:37,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 133 [2025-03-03 14:11:37,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:37,885 INFO L225 Difference]: With dead ends: 1305 [2025-03-03 14:11:37,885 INFO L226 Difference]: Without dead ends: 689 [2025-03-03 14:11:37,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:11:37,891 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 122 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:37,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2890 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 14:11:37,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2025-03-03 14:11:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 671. [2025-03-03 14:11:37,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 534 states have (on average 1.6835205992509363) internal successors, (899), 550 states have internal predecessors, (899), 108 states have call successors, (108), 30 states have call predecessors, (108), 28 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:11:37,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1112 transitions. [2025-03-03 14:11:37,920 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1112 transitions. Word has length 133 [2025-03-03 14:11:37,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:37,920 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1112 transitions. [2025-03-03 14:11:37,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2025-03-03 14:11:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1112 transitions. [2025-03-03 14:11:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-03 14:11:37,924 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:37,924 INFO L218 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] [2025-03-03 14:11:37,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 14:11:38,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-03 14:11:38,125 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:38,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:38,126 INFO L85 PathProgramCache]: Analyzing trace with hash -11284716, now seen corresponding path program 1 times [2025-03-03 14:11:38,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:38,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306085256] [2025-03-03 14:11:38,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:38,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:38,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-03 14:11:38,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-03 14:11:38,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:38,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:11:38,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:38,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306085256] [2025-03-03 14:11:38,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306085256] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:38,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562098314] [2025-03-03 14:11:38,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:38,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:38,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:38,313 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) [2025-03-03 14:11:38,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 14:11:38,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-03 14:11:38,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-03 14:11:38,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:38,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:38,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:11:38,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:11:38,633 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:38,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562098314] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:38,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:38,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-03 14:11:38,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638839366] [2025-03-03 14:11:38,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:38,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:38,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:38,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:38,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:11:38,634 INFO L87 Difference]: Start difference. First operand 671 states and 1112 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2025-03-03 14:11:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:38,746 INFO L93 Difference]: Finished difference Result 1357 states and 2251 transitions. [2025-03-03 14:11:38,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:11:38,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 135 [2025-03-03 14:11:38,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:38,752 INFO L225 Difference]: With dead ends: 1357 [2025-03-03 14:11:38,752 INFO L226 Difference]: Without dead ends: 696 [2025-03-03 14:11:38,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:11:38,758 INFO L435 NwaCegarLoop]: 1002 mSDtfsCounter, 89 mSDsluCounter, 4916 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5918 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:38,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5918 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:38,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2025-03-03 14:11:38,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 684. [2025-03-03 14:11:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 544 states have (on average 1.6801470588235294) internal successors, (914), 562 states have internal predecessors, (914), 109 states have call successors, (109), 30 states have call predecessors, (109), 30 states have return successors, (110), 104 states have call predecessors, (110), 106 states have call successors, (110) [2025-03-03 14:11:38,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1133 transitions. [2025-03-03 14:11:38,794 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1133 transitions. Word has length 135 [2025-03-03 14:11:38,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:38,794 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1133 transitions. [2025-03-03 14:11:38,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2025-03-03 14:11:38,795 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1133 transitions. [2025-03-03 14:11:38,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-03 14:11:38,798 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:38,798 INFO L218 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] [2025-03-03 14:11:38,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:38,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:38,999 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:38,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:38,999 INFO L85 PathProgramCache]: Analyzing trace with hash 810161500, now seen corresponding path program 1 times [2025-03-03 14:11:39,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:39,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688520741] [2025-03-03 14:11:39,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:39,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:39,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-03 14:11:39,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-03 14:11:39,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:39,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-03 14:11:39,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:39,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688520741] [2025-03-03 14:11:39,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688520741] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:39,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943933728] [2025-03-03 14:11:39,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:39,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:39,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:39,083 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) [2025-03-03 14:11:39,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 14:11:39,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-03 14:11:39,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-03 14:11:39,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:39,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:39,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:11:39,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 14:11:39,342 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:39,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943933728] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:39,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:39,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:11:39,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658735410] [2025-03-03 14:11:39,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:39,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:39,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:39,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:39,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:11:39,344 INFO L87 Difference]: Start difference. First operand 684 states and 1133 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), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:11:39,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:39,414 INFO L93 Difference]: Finished difference Result 1371 states and 2272 transitions. [2025-03-03 14:11:39,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:39,414 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), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2025-03-03 14:11:39,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:39,419 INFO L225 Difference]: With dead ends: 1371 [2025-03-03 14:11:39,419 INFO L226 Difference]: Without dead ends: 695 [2025-03-03 14:11:39,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:11:39,425 INFO L435 NwaCegarLoop]: 1002 mSDtfsCounter, 12 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:39,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2997 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:39,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2025-03-03 14:11:39,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 693. [2025-03-03 14:11:39,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 552 states have (on average 1.6721014492753623) internal successors, (923), 570 states have internal predecessors, (923), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2025-03-03 14:11:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1141 transitions. [2025-03-03 14:11:39,465 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1141 transitions. Word has length 136 [2025-03-03 14:11:39,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:39,465 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1141 transitions. [2025-03-03 14:11:39,465 INFO L472 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), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:11:39,466 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1141 transitions. [2025-03-03 14:11:39,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-03 14:11:39,469 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:39,470 INFO L218 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] [2025-03-03 14:11:39,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:39,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:39,670 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:39,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:39,671 INFO L85 PathProgramCache]: Analyzing trace with hash 139347930, now seen corresponding path program 1 times [2025-03-03 14:11:39,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:39,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734025609] [2025-03-03 14:11:39,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:39,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:39,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-03 14:11:39,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-03 14:11:39,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:39,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:11:39,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:39,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734025609] [2025-03-03 14:11:39,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734025609] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:39,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040178084] [2025-03-03 14:11:39,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:39,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:39,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:39,825 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) [2025-03-03 14:11:39,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 14:11:39,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-03 14:11:40,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-03 14:11:40,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:40,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:40,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:11:40,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:11:40,123 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:40,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040178084] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:40,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:40,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-03 14:11:40,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726029996] [2025-03-03 14:11:40,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:40,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:40,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:40,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:40,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:11:40,124 INFO L87 Difference]: Start difference. First operand 693 states and 1141 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2025-03-03 14:11:40,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:40,230 INFO L93 Difference]: Finished difference Result 1386 states and 2285 transitions. [2025-03-03 14:11:40,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:11:40,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 136 [2025-03-03 14:11:40,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:40,235 INFO L225 Difference]: With dead ends: 1386 [2025-03-03 14:11:40,236 INFO L226 Difference]: Without dead ends: 716 [2025-03-03 14:11:40,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:11:40,239 INFO L435 NwaCegarLoop]: 1001 mSDtfsCounter, 100 mSDsluCounter, 4901 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5902 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:40,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5902 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:40,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2025-03-03 14:11:40,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 693. [2025-03-03 14:11:40,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 552 states have (on average 1.6721014492753623) internal successors, (923), 570 states have internal predecessors, (923), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2025-03-03 14:11:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1141 transitions. [2025-03-03 14:11:40,269 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1141 transitions. Word has length 136 [2025-03-03 14:11:40,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:40,269 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1141 transitions. [2025-03-03 14:11:40,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2025-03-03 14:11:40,270 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1141 transitions. [2025-03-03 14:11:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-03 14:11:40,273 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:40,273 INFO L218 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] [2025-03-03 14:11:40,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:40,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:40,474 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:40,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:40,474 INFO L85 PathProgramCache]: Analyzing trace with hash -842817454, now seen corresponding path program 1 times [2025-03-03 14:11:40,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:40,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003413176] [2025-03-03 14:11:40,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:40,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:40,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-03 14:11:40,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-03 14:11:40,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:40,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:11:40,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:40,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003413176] [2025-03-03 14:11:40,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003413176] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:40,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221199795] [2025-03-03 14:11:40,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:40,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:40,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:40,630 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) [2025-03-03 14:11:40,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 14:11:40,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-03 14:11:40,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-03 14:11:40,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:40,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:40,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:11:40,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:11:40,910 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:40,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221199795] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:40,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:40,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-03 14:11:40,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829079414] [2025-03-03 14:11:40,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:40,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:40,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:40,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:40,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:11:40,912 INFO L87 Difference]: Start difference. First operand 693 states and 1141 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2025-03-03 14:11:41,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:41,011 INFO L93 Difference]: Finished difference Result 1386 states and 2285 transitions. [2025-03-03 14:11:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:11:41,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 137 [2025-03-03 14:11:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:41,016 INFO L225 Difference]: With dead ends: 1386 [2025-03-03 14:11:41,017 INFO L226 Difference]: Without dead ends: 716 [2025-03-03 14:11:41,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:11:41,020 INFO L435 NwaCegarLoop]: 1001 mSDtfsCounter, 111 mSDsluCounter, 4889 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5890 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:41,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5890 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:41,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2025-03-03 14:11:41,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 693. [2025-03-03 14:11:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 552 states have (on average 1.6721014492753623) internal successors, (923), 570 states have internal predecessors, (923), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2025-03-03 14:11:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1141 transitions. [2025-03-03 14:11:41,047 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1141 transitions. Word has length 137 [2025-03-03 14:11:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:41,047 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1141 transitions. [2025-03-03 14:11:41,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2025-03-03 14:11:41,048 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1141 transitions. [2025-03-03 14:11:41,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-03 14:11:41,051 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:41,051 INFO L218 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] [2025-03-03 14:11:41,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:41,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:41,252 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:41,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1854930203, now seen corresponding path program 1 times [2025-03-03 14:11:41,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:41,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442402182] [2025-03-03 14:11:41,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:41,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:41,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-03 14:11:41,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-03 14:11:41,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:41,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:11:41,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:41,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442402182] [2025-03-03 14:11:41,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442402182] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:41,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211914401] [2025-03-03 14:11:41,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:41,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:41,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:41,383 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) [2025-03-03 14:11:41,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 14:11:41,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-03 14:11:41,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-03 14:11:41,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:41,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:41,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:11:41,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:11:41,671 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:41,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211914401] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:41,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:41,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-03 14:11:41,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748688496] [2025-03-03 14:11:41,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:41,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:11:41,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:41,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:11:41,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:11:41,673 INFO L87 Difference]: Start difference. First operand 693 states and 1141 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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) [2025-03-03 14:11:41,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:41,811 INFO L93 Difference]: Finished difference Result 1389 states and 2289 transitions. [2025-03-03 14:11:41,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:11:41,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 137 [2025-03-03 14:11:41,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:41,815 INFO L225 Difference]: With dead ends: 1389 [2025-03-03 14:11:41,815 INFO L226 Difference]: Without dead ends: 719 [2025-03-03 14:11:41,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:11:41,819 INFO L435 NwaCegarLoop]: 991 mSDtfsCounter, 95 mSDsluCounter, 5849 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6840 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:41,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6840 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:41,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2025-03-03 14:11:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 693. [2025-03-03 14:11:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 552 states have (on average 1.6721014492753623) internal successors, (923), 570 states have internal predecessors, (923), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2025-03-03 14:11:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1141 transitions. [2025-03-03 14:11:41,848 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1141 transitions. Word has length 137 [2025-03-03 14:11:41,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:41,848 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1141 transitions. [2025-03-03 14:11:41,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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) [2025-03-03 14:11:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1141 transitions. [2025-03-03 14:11:41,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-03 14:11:41,852 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:41,852 INFO L218 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] [2025-03-03 14:11:41,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-03 14:11:42,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:42,056 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:42,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:42,056 INFO L85 PathProgramCache]: Analyzing trace with hash 548569991, now seen corresponding path program 1 times [2025-03-03 14:11:42,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:42,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506967510] [2025-03-03 14:11:42,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:42,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:42,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-03 14:11:42,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-03 14:11:42,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:42,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:11:42,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:42,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506967510] [2025-03-03 14:11:42,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506967510] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:42,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534305147] [2025-03-03 14:11:42,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:42,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:42,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:42,178 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) [2025-03-03 14:11:42,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 14:11:42,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-03 14:11:42,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-03 14:11:42,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:42,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:42,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:11:42,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:11:42,459 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:42,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534305147] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:42,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:42,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-03 14:11:42,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589281874] [2025-03-03 14:11:42,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:42,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:11:42,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:42,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:11:42,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:11:42,462 INFO L87 Difference]: Start difference. First operand 693 states and 1141 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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) [2025-03-03 14:11:42,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:42,589 INFO L93 Difference]: Finished difference Result 1389 states and 2289 transitions. [2025-03-03 14:11:42,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:11:42,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 138 [2025-03-03 14:11:42,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:42,593 INFO L225 Difference]: With dead ends: 1389 [2025-03-03 14:11:42,593 INFO L226 Difference]: Without dead ends: 719 [2025-03-03 14:11:42,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:11:42,597 INFO L435 NwaCegarLoop]: 991 mSDtfsCounter, 105 mSDsluCounter, 5837 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6828 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:42,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6828 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:42,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2025-03-03 14:11:42,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 693. [2025-03-03 14:11:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 552 states have (on average 1.6721014492753623) internal successors, (923), 570 states have internal predecessors, (923), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2025-03-03 14:11:42,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1141 transitions. [2025-03-03 14:11:42,617 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1141 transitions. Word has length 138 [2025-03-03 14:11:42,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:42,617 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1141 transitions. [2025-03-03 14:11:42,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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) [2025-03-03 14:11:42,617 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1141 transitions. [2025-03-03 14:11:42,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-03 14:11:42,620 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:42,621 INFO L218 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] [2025-03-03 14:11:42,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:42,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-03 14:11:42,821 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:42,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:42,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1451726875, now seen corresponding path program 1 times [2025-03-03 14:11:42,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:42,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682429881] [2025-03-03 14:11:42,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:42,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:42,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-03 14:11:42,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-03 14:11:42,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:42,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-03 14:11:42,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:42,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682429881] [2025-03-03 14:11:42,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682429881] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:42,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138675500] [2025-03-03 14:11:42,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:42,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:42,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:42,890 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) [2025-03-03 14:11:42,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-03 14:11:43,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-03 14:11:43,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-03 14:11:43,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:43,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:43,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:11:43,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:11:43,155 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:43,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138675500] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:43,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:43,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:11:43,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713244390] [2025-03-03 14:11:43,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:43,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:43,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:43,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:43,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:11:43,156 INFO L87 Difference]: Start difference. First operand 693 states and 1141 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2025-03-03 14:11:43,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:43,208 INFO L93 Difference]: Finished difference Result 1352 states and 2234 transitions. [2025-03-03 14:11:43,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:43,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 139 [2025-03-03 14:11:43,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:43,212 INFO L225 Difference]: With dead ends: 1352 [2025-03-03 14:11:43,212 INFO L226 Difference]: Without dead ends: 693 [2025-03-03 14:11:43,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:11:43,215 INFO L435 NwaCegarLoop]: 999 mSDtfsCounter, 20 mSDsluCounter, 1992 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:43,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2991 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:43,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2025-03-03 14:11:43,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2025-03-03 14:11:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 552 states have (on average 1.6630434782608696) internal successors, (918), 570 states have internal predecessors, (918), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2025-03-03 14:11:43,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1136 transitions. [2025-03-03 14:11:43,233 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1136 transitions. Word has length 139 [2025-03-03 14:11:43,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:43,234 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1136 transitions. [2025-03-03 14:11:43,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2025-03-03 14:11:43,234 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1136 transitions. [2025-03-03 14:11:43,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-03 14:11:43,237 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:43,237 INFO L218 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] [2025-03-03 14:11:43,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:43,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:43,438 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:43,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:43,438 INFO L85 PathProgramCache]: Analyzing trace with hash -911285851, now seen corresponding path program 1 times [2025-03-03 14:11:43,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:43,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584185382] [2025-03-03 14:11:43,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:43,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:43,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:11:43,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:11:43,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:43,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-03 14:11:43,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:43,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584185382] [2025-03-03 14:11:43,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584185382] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:43,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104496154] [2025-03-03 14:11:43,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:43,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:43,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:43,508 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) [2025-03-03 14:11:43,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-03 14:11:43,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:11:43,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:11:43,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:43,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:43,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:11:43,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-03 14:11:43,765 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:43,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104496154] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:43,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:43,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:11:43,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104846552] [2025-03-03 14:11:43,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:43,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:43,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:43,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:43,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:11:43,767 INFO L87 Difference]: Start difference. First operand 693 states and 1136 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2025-03-03 14:11:43,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:43,920 INFO L93 Difference]: Finished difference Result 1381 states and 2274 transitions. [2025-03-03 14:11:43,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:43,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 140 [2025-03-03 14:11:43,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:43,927 INFO L225 Difference]: With dead ends: 1381 [2025-03-03 14:11:43,927 INFO L226 Difference]: Without dead ends: 780 [2025-03-03 14:11:43,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:11:43,930 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 171 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:43,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2863 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:43,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2025-03-03 14:11:43,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 738. [2025-03-03 14:11:43,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 596 states have (on average 1.6812080536912752) internal successors, (1002), 614 states have internal predecessors, (1002), 109 states have call successors, (109), 32 states have call predecessors, (109), 32 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2025-03-03 14:11:43,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1219 transitions. [2025-03-03 14:11:43,958 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1219 transitions. Word has length 140 [2025-03-03 14:11:43,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:43,959 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1219 transitions. [2025-03-03 14:11:43,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2025-03-03 14:11:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1219 transitions. [2025-03-03 14:11:43,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-03 14:11:43,962 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:43,962 INFO L218 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] [2025-03-03 14:11:43,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:44,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-03 14:11:44,163 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:44,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:44,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1541539613, now seen corresponding path program 1 times [2025-03-03 14:11:44,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:44,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327310707] [2025-03-03 14:11:44,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:44,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:44,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-03 14:11:44,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-03 14:11:44,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:44,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:44,226 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-03 14:11:44,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:44,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327310707] [2025-03-03 14:11:44,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327310707] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:44,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300131125] [2025-03-03 14:11:44,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:44,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:44,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:44,229 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) [2025-03-03 14:11:44,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-03 14:11:44,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-03 14:11:44,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-03 14:11:44,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:44,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:44,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:11:44,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:11:44,492 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:44,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300131125] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:44,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:44,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-03 14:11:44,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024227456] [2025-03-03 14:11:44,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:44,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:44,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:44,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:44,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:11:44,494 INFO L87 Difference]: Start difference. First operand 738 states and 1219 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), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-03 14:11:44,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:44,580 INFO L93 Difference]: Finished difference Result 1374 states and 2261 transitions. [2025-03-03 14:11:44,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:11:44,580 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), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2025-03-03 14:11:44,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:44,585 INFO L225 Difference]: With dead ends: 1374 [2025-03-03 14:11:44,585 INFO L226 Difference]: Without dead ends: 773 [2025-03-03 14:11:44,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:11:44,589 INFO L435 NwaCegarLoop]: 1004 mSDtfsCounter, 89 mSDsluCounter, 4930 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5934 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:44,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5934 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:44,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2025-03-03 14:11:44,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 751. [2025-03-03 14:11:44,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 606 states have (on average 1.6782178217821782) internal successors, (1017), 626 states have internal predecessors, (1017), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2025-03-03 14:11:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1238 transitions. [2025-03-03 14:11:44,611 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1238 transitions. Word has length 141 [2025-03-03 14:11:44,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:44,612 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 1238 transitions. [2025-03-03 14:11:44,612 INFO L472 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), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-03 14:11:44,612 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1238 transitions. [2025-03-03 14:11:44,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-03 14:11:44,615 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:44,615 INFO L218 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, 1, 1] [2025-03-03 14:11:44,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:44,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-03 14:11:44,816 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:44,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:44,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1888221756, now seen corresponding path program 1 times [2025-03-03 14:11:44,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:44,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589868288] [2025-03-03 14:11:44,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:44,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:44,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-03 14:11:44,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-03 14:11:44,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:44,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-03 14:11:44,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:44,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589868288] [2025-03-03 14:11:44,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589868288] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:44,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117448114] [2025-03-03 14:11:44,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:44,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:44,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:44,886 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) [2025-03-03 14:11:44,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-03 14:11:44,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-03 14:11:45,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-03 14:11:45,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:45,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:45,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:11:45,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:11:45,136 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:45,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117448114] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:45,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:45,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:11:45,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727806764] [2025-03-03 14:11:45,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:45,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:45,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:45,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:45,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:11:45,140 INFO L87 Difference]: Start difference. First operand 751 states and 1238 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2025-03-03 14:11:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:45,177 INFO L93 Difference]: Finished difference Result 1428 states and 2357 transitions. [2025-03-03 14:11:45,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:11:45,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 142 [2025-03-03 14:11:45,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:45,182 INFO L225 Difference]: With dead ends: 1428 [2025-03-03 14:11:45,182 INFO L226 Difference]: Without dead ends: 751 [2025-03-03 14:11:45,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:11:45,186 INFO L435 NwaCegarLoop]: 1003 mSDtfsCounter, 2 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:45,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3000 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:45,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2025-03-03 14:11:45,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2025-03-03 14:11:45,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 606 states have (on average 1.6732673267326732) internal successors, (1014), 626 states have internal predecessors, (1014), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2025-03-03 14:11:45,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1235 transitions. [2025-03-03 14:11:45,205 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1235 transitions. Word has length 142 [2025-03-03 14:11:45,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:45,206 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 1235 transitions. [2025-03-03 14:11:45,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2025-03-03 14:11:45,206 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1235 transitions. [2025-03-03 14:11:45,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-03 14:11:45,209 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:45,210 INFO L218 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] [2025-03-03 14:11:45,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-03 14:11:45,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-03 14:11:45,411 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:45,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:45,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1785707197, now seen corresponding path program 1 times [2025-03-03 14:11:45,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:45,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660793914] [2025-03-03 14:11:45,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:45,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:45,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-03 14:11:45,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-03 14:11:45,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:45,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:45,471 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-03 14:11:45,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:45,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660793914] [2025-03-03 14:11:45,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660793914] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:45,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757351293] [2025-03-03 14:11:45,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:45,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:45,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:45,474 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) [2025-03-03 14:11:45,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-03 14:11:45,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-03 14:11:45,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-03 14:11:45,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:45,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:45,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:11:45,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:11:45,755 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:45,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757351293] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:45,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:45,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-03 14:11:45,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188334057] [2025-03-03 14:11:45,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:45,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:45,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:45,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:45,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:11:45,758 INFO L87 Difference]: Start difference. First operand 751 states and 1235 transitions. Second operand has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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) [2025-03-03 14:11:45,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:45,829 INFO L93 Difference]: Finished difference Result 1383 states and 2272 transitions. [2025-03-03 14:11:45,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:11:45,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 142 [2025-03-03 14:11:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:45,835 INFO L225 Difference]: With dead ends: 1383 [2025-03-03 14:11:45,835 INFO L226 Difference]: Without dead ends: 782 [2025-03-03 14:11:45,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:11:45,839 INFO L435 NwaCegarLoop]: 999 mSDtfsCounter, 100 mSDsluCounter, 4897 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5896 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:45,840 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5896 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:45,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2025-03-03 14:11:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 751. [2025-03-03 14:11:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 606 states have (on average 1.6732673267326732) internal successors, (1014), 626 states have internal predecessors, (1014), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2025-03-03 14:11:45,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1235 transitions. [2025-03-03 14:11:45,861 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1235 transitions. Word has length 142 [2025-03-03 14:11:45,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:45,862 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 1235 transitions. [2025-03-03 14:11:45,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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) [2025-03-03 14:11:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1235 transitions. [2025-03-03 14:11:45,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-03 14:11:45,865 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:45,865 INFO L218 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] [2025-03-03 14:11:45,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:46,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-03 14:11:46,066 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:46,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:46,066 INFO L85 PathProgramCache]: Analyzing trace with hash -692101652, now seen corresponding path program 1 times [2025-03-03 14:11:46,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:46,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033333838] [2025-03-03 14:11:46,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:46,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:46,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-03 14:11:46,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-03 14:11:46,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:46,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-03 14:11:46,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:46,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033333838] [2025-03-03 14:11:46,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033333838] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:46,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102704332] [2025-03-03 14:11:46,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:46,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:46,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:46,127 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) [2025-03-03 14:11:46,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-03 14:11:46,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-03 14:11:46,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-03 14:11:46,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:46,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:46,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:11:46,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:11:46,433 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:46,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102704332] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:46,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:46,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-03 14:11:46,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096527005] [2025-03-03 14:11:46,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:46,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:11:46,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:46,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:11:46,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:11:46,434 INFO L87 Difference]: Start difference. First operand 751 states and 1235 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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) [2025-03-03 14:11:46,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:46,548 INFO L93 Difference]: Finished difference Result 1386 states and 2275 transitions. [2025-03-03 14:11:46,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:11:46,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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 142 [2025-03-03 14:11:46,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:46,553 INFO L225 Difference]: With dead ends: 1386 [2025-03-03 14:11:46,553 INFO L226 Difference]: Without dead ends: 785 [2025-03-03 14:11:46,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:11:46,556 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 96 mSDsluCounter, 5843 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6832 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:46,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6832 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:46,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2025-03-03 14:11:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 751. [2025-03-03 14:11:46,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 606 states have (on average 1.6732673267326732) internal successors, (1014), 626 states have internal predecessors, (1014), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2025-03-03 14:11:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1235 transitions. [2025-03-03 14:11:46,579 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1235 transitions. Word has length 142 [2025-03-03 14:11:46,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:46,579 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 1235 transitions. [2025-03-03 14:11:46,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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) [2025-03-03 14:11:46,579 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1235 transitions. [2025-03-03 14:11:46,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-03 14:11:46,583 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:46,583 INFO L218 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] [2025-03-03 14:11:46,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:46,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:46,784 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:46,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:46,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1462353154, now seen corresponding path program 1 times [2025-03-03 14:11:46,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:46,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981504005] [2025-03-03 14:11:46,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:46,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:46,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-03 14:11:46,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-03 14:11:46,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:46,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:46,857 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-03 14:11:46,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:46,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981504005] [2025-03-03 14:11:46,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981504005] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:46,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45056110] [2025-03-03 14:11:46,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:46,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:46,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:46,859 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) [2025-03-03 14:11:46,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-03 14:11:46,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-03 14:11:47,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-03 14:11:47,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:47,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:47,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:11:47,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:11:47,148 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:47,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45056110] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:47,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:47,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-03 14:11:47,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743538986] [2025-03-03 14:11:47,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:47,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:11:47,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:47,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:11:47,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:11:47,151 INFO L87 Difference]: Start difference. First operand 751 states and 1235 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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) [2025-03-03 14:11:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:47,262 INFO L93 Difference]: Finished difference Result 1377 states and 2261 transitions. [2025-03-03 14:11:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:11:47,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 143 [2025-03-03 14:11:47,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:47,267 INFO L225 Difference]: With dead ends: 1377 [2025-03-03 14:11:47,267 INFO L226 Difference]: Without dead ends: 776 [2025-03-03 14:11:47,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:11:47,270 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 106 mSDsluCounter, 5831 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6820 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:47,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6820 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:47,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2025-03-03 14:11:47,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 751. [2025-03-03 14:11:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 606 states have (on average 1.6732673267326732) internal successors, (1014), 626 states have internal predecessors, (1014), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2025-03-03 14:11:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1235 transitions. [2025-03-03 14:11:47,289 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1235 transitions. Word has length 143 [2025-03-03 14:11:47,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:47,289 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 1235 transitions. [2025-03-03 14:11:47,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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) [2025-03-03 14:11:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1235 transitions. [2025-03-03 14:11:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-03 14:11:47,293 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:47,294 INFO L218 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, 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] [2025-03-03 14:11:47,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:47,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-03 14:11:47,498 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:47,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1653632320, now seen corresponding path program 1 times [2025-03-03 14:11:47,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:47,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13190087] [2025-03-03 14:11:47,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:47,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:47,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-03 14:11:47,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-03 14:11:47,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:47,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-03 14:11:47,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:47,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13190087] [2025-03-03 14:11:47,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13190087] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:47,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555233456] [2025-03-03 14:11:47,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:47,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:47,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:47,559 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) [2025-03-03 14:11:47,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-03 14:11:47,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-03 14:11:47,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-03 14:11:47,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:47,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:47,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:11:47,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 14:11:47,870 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:47,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555233456] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:47,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:47,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:11:47,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646193648] [2025-03-03 14:11:47,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:47,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:11:47,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:47,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:11:47,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:11:47,872 INFO L87 Difference]: Start difference. First operand 751 states and 1235 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) [2025-03-03 14:11:48,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:48,279 INFO L93 Difference]: Finished difference Result 1356 states and 2258 transitions. [2025-03-03 14:11:48,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:11:48,279 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 144 [2025-03-03 14:11:48,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:48,283 INFO L225 Difference]: With dead ends: 1356 [2025-03-03 14:11:48,284 INFO L226 Difference]: Without dead ends: 759 [2025-03-03 14:11:48,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:11:48,287 INFO L435 NwaCegarLoop]: 993 mSDtfsCounter, 961 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:48,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 2559 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 14:11:48,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2025-03-03 14:11:48,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2025-03-03 14:11:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 613 states have (on average 1.6737357259380097) internal successors, (1026), 633 states have internal predecessors, (1026), 110 states have call successors, (110), 33 states have call predecessors, (110), 35 states have return successors, (112), 105 states have call predecessors, (112), 107 states have call successors, (112) [2025-03-03 14:11:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1248 transitions. [2025-03-03 14:11:48,310 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1248 transitions. Word has length 144 [2025-03-03 14:11:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:48,310 INFO L471 AbstractCegarLoop]: Abstraction has 759 states and 1248 transitions. [2025-03-03 14:11:48,311 INFO L472 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) [2025-03-03 14:11:48,311 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1248 transitions. [2025-03-03 14:11:48,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-03 14:11:48,314 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:48,314 INFO L218 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, 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] [2025-03-03 14:11:48,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:48,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-03 14:11:48,515 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:48,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:48,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1450380540, now seen corresponding path program 1 times [2025-03-03 14:11:48,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:48,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139055229] [2025-03-03 14:11:48,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:48,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:48,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-03 14:11:48,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-03 14:11:48,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:48,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-03 14:11:48,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:48,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139055229] [2025-03-03 14:11:48,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139055229] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:48,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402581667] [2025-03-03 14:11:48,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:48,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:48,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:48,577 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) [2025-03-03 14:11:48,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-03 14:11:48,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-03 14:11:48,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-03 14:11:48,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:48,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:48,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:11:48,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:48,874 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 14:11:48,875 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:48,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402581667] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:48,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:48,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:11:48,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540023671] [2025-03-03 14:11:48,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:48,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:11:48,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:48,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:11:48,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:11:48,876 INFO L87 Difference]: Start difference. First operand 759 states and 1248 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) [2025-03-03 14:11:49,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:49,231 INFO L93 Difference]: Finished difference Result 1372 states and 2281 transitions. [2025-03-03 14:11:49,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:11:49,232 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 146 [2025-03-03 14:11:49,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:49,238 INFO L225 Difference]: With dead ends: 1372 [2025-03-03 14:11:49,238 INFO L226 Difference]: Without dead ends: 767 [2025-03-03 14:11:49,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:11:49,241 INFO L435 NwaCegarLoop]: 990 mSDtfsCounter, 962 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:49,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 2556 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:11:49,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2025-03-03 14:11:49,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 767. [2025-03-03 14:11:49,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 620 states have (on average 1.6741935483870967) internal successors, (1038), 640 states have internal predecessors, (1038), 110 states have call successors, (110), 34 states have call predecessors, (110), 36 states have return successors, (113), 105 states have call predecessors, (113), 107 states have call successors, (113) [2025-03-03 14:11:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1261 transitions. [2025-03-03 14:11:49,259 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1261 transitions. Word has length 146 [2025-03-03 14:11:49,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:49,259 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1261 transitions. [2025-03-03 14:11:49,260 INFO L472 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) [2025-03-03 14:11:49,260 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1261 transitions. [2025-03-03 14:11:49,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-03 14:11:49,262 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:49,262 INFO L218 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, 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] [2025-03-03 14:11:49,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:49,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-03 14:11:49,463 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:49,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:49,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1879376800, now seen corresponding path program 1 times [2025-03-03 14:11:49,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:49,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169550424] [2025-03-03 14:11:49,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:49,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:49,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-03 14:11:49,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-03 14:11:49,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:49,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-03 14:11:49,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:49,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169550424] [2025-03-03 14:11:49,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169550424] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:49,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318412295] [2025-03-03 14:11:49,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:49,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:49,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:49,520 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) [2025-03-03 14:11:49,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-03 14:11:49,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-03 14:11:49,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-03 14:11:49,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:49,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:49,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:11:49,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 14:11:49,819 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:49,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318412295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:49,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:49,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:11:49,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401106422] [2025-03-03 14:11:49,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:49,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:11:49,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:49,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:11:49,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:11:49,820 INFO L87 Difference]: Start difference. First operand 767 states and 1261 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 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) [2025-03-03 14:11:50,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:50,183 INFO L93 Difference]: Finished difference Result 1388 states and 2304 transitions. [2025-03-03 14:11:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:11:50,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 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 148 [2025-03-03 14:11:50,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:50,187 INFO L225 Difference]: With dead ends: 1388 [2025-03-03 14:11:50,188 INFO L226 Difference]: Without dead ends: 775 [2025-03-03 14:11:50,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:11:50,191 INFO L435 NwaCegarLoop]: 987 mSDtfsCounter, 945 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:50,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 2553 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:11:50,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2025-03-03 14:11:50,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2025-03-03 14:11:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 627 states have (on average 1.674641148325359) internal successors, (1050), 647 states have internal predecessors, (1050), 110 states have call successors, (110), 35 states have call predecessors, (110), 37 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2025-03-03 14:11:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1274 transitions. [2025-03-03 14:11:50,211 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1274 transitions. Word has length 148 [2025-03-03 14:11:50,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:50,211 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 1274 transitions. [2025-03-03 14:11:50,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 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) [2025-03-03 14:11:50,211 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1274 transitions. [2025-03-03 14:11:50,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-03 14:11:50,214 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:50,214 INFO L218 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, 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] [2025-03-03 14:11:50,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:50,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-03 14:11:50,414 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:50,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:50,415 INFO L85 PathProgramCache]: Analyzing trace with hash 799111818, now seen corresponding path program 1 times [2025-03-03 14:11:50,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:50,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125135924] [2025-03-03 14:11:50,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:50,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:50,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-03 14:11:50,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-03 14:11:50,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:50,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:11:50,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:50,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125135924] [2025-03-03 14:11:50,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125135924] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:50,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314873090] [2025-03-03 14:11:50,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:50,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:50,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:50,469 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) [2025-03-03 14:11:50,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-03 14:11:50,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-03 14:11:50,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-03 14:11:50,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:50,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:50,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:11:50,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 14:11:50,820 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:50,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314873090] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:50,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:50,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:11:50,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826081767] [2025-03-03 14:11:50,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:50,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:11:50,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:50,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:11:50,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:11:50,821 INFO L87 Difference]: Start difference. First operand 775 states and 1274 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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) [2025-03-03 14:11:51,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:51,188 INFO L93 Difference]: Finished difference Result 1404 states and 2327 transitions. [2025-03-03 14:11:51,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:11:51,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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 150 [2025-03-03 14:11:51,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:51,193 INFO L225 Difference]: With dead ends: 1404 [2025-03-03 14:11:51,193 INFO L226 Difference]: Without dead ends: 783 [2025-03-03 14:11:51,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:11:51,196 INFO L435 NwaCegarLoop]: 984 mSDtfsCounter, 935 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:51,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2550 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:11:51,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2025-03-03 14:11:51,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2025-03-03 14:11:51,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 634 states have (on average 1.6750788643533123) internal successors, (1062), 654 states have internal predecessors, (1062), 110 states have call successors, (110), 36 states have call predecessors, (110), 38 states have return successors, (115), 105 states have call predecessors, (115), 107 states have call successors, (115) [2025-03-03 14:11:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1287 transitions. [2025-03-03 14:11:51,219 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1287 transitions. Word has length 150 [2025-03-03 14:11:51,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:51,219 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 1287 transitions. [2025-03-03 14:11:51,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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) [2025-03-03 14:11:51,219 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1287 transitions. [2025-03-03 14:11:51,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-03 14:11:51,221 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:51,221 INFO L218 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, 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] [2025-03-03 14:11:51,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-03 14:11:51,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:51,422 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:51,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:51,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1548479616, now seen corresponding path program 1 times [2025-03-03 14:11:51,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:51,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001334725] [2025-03-03 14:11:51,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:51,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:51,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-03 14:11:51,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-03 14:11:51,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:51,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-03 14:11:51,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:51,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001334725] [2025-03-03 14:11:51,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001334725] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:51,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121573249] [2025-03-03 14:11:51,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:51,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:51,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:51,479 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) [2025-03-03 14:11:51,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-03 14:11:51,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-03 14:11:51,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-03 14:11:51,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:51,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:51,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:11:51,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:11:51,718 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:51,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121573249] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:51,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:51,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-03 14:11:51,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893990185] [2025-03-03 14:11:51,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:51,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:51,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:51,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:51,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:11:51,719 INFO L87 Difference]: Start difference. First operand 783 states and 1287 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2025-03-03 14:11:51,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:51,755 INFO L93 Difference]: Finished difference Result 1543 states and 2548 transitions. [2025-03-03 14:11:51,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:51,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 152 [2025-03-03 14:11:51,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:51,762 INFO L225 Difference]: With dead ends: 1543 [2025-03-03 14:11:51,762 INFO L226 Difference]: Without dead ends: 748 [2025-03-03 14:11:51,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:11:51,764 INFO L435 NwaCegarLoop]: 1000 mSDtfsCounter, 7 mSDsluCounter, 1992 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:51,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2992 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:51,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2025-03-03 14:11:51,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2025-03-03 14:11:51,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 602 states have (on average 1.6561461794019934) internal successors, (997), 620 states have internal predecessors, (997), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2025-03-03 14:11:51,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1218 transitions. [2025-03-03 14:11:51,782 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1218 transitions. Word has length 152 [2025-03-03 14:11:51,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:51,782 INFO L471 AbstractCegarLoop]: Abstraction has 748 states and 1218 transitions. [2025-03-03 14:11:51,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2025-03-03 14:11:51,782 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1218 transitions. [2025-03-03 14:11:51,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-03 14:11:51,784 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:51,784 INFO L218 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:11:51,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-03 14:11:51,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:51,985 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:51,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:51,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1196793053, now seen corresponding path program 1 times [2025-03-03 14:11:51,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:51,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469237266] [2025-03-03 14:11:51,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:51,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:51,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-03 14:11:52,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-03 14:11:52,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:52,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-03 14:11:52,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:52,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469237266] [2025-03-03 14:11:52,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469237266] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:52,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168983513] [2025-03-03 14:11:52,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:52,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:52,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:52,090 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) [2025-03-03 14:11:52,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-03 14:11:52,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-03 14:11:52,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-03 14:11:52,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:52,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:52,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:11:52,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:11:52,367 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:52,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168983513] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:52,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:52,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-03 14:11:52,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645205679] [2025-03-03 14:11:52,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:52,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:11:52,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:52,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:11:52,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:11:52,369 INFO L87 Difference]: Start difference. First operand 748 states and 1218 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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) [2025-03-03 14:11:52,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:52,480 INFO L93 Difference]: Finished difference Result 1486 states and 2421 transitions. [2025-03-03 14:11:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:11:52,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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 152 [2025-03-03 14:11:52,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:52,486 INFO L225 Difference]: With dead ends: 1486 [2025-03-03 14:11:52,486 INFO L226 Difference]: Without dead ends: 768 [2025-03-03 14:11:52,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:11:52,490 INFO L435 NwaCegarLoop]: 988 mSDtfsCounter, 111 mSDsluCounter, 5809 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 6797 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:52,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 6797 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:52,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2025-03-03 14:11:52,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 748. [2025-03-03 14:11:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 602 states have (on average 1.654485049833887) internal successors, (996), 620 states have internal predecessors, (996), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2025-03-03 14:11:52,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1217 transitions. [2025-03-03 14:11:52,518 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1217 transitions. Word has length 152 [2025-03-03 14:11:52,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:52,518 INFO L471 AbstractCegarLoop]: Abstraction has 748 states and 1217 transitions. [2025-03-03 14:11:52,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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) [2025-03-03 14:11:52,519 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1217 transitions. [2025-03-03 14:11:52,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-03 14:11:52,521 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:52,521 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:11:52,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-03 14:11:52,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:52,722 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:52,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:52,723 INFO L85 PathProgramCache]: Analyzing trace with hash 859139217, now seen corresponding path program 1 times [2025-03-03 14:11:52,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:52,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104316814] [2025-03-03 14:11:52,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:52,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:52,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-03 14:11:52,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-03 14:11:52,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:52,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-03 14:11:52,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104316814] [2025-03-03 14:11:52,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104316814] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960624439] [2025-03-03 14:11:52,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:52,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:52,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:52,835 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) [2025-03-03 14:11:52,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-03 14:11:52,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-03 14:11:53,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-03 14:11:53,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:53,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:53,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-03 14:11:53,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:53,066 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:11:53,066 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:53,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960624439] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:53,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:53,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-03-03 14:11:53,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886138548] [2025-03-03 14:11:53,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:53,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:53,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:53,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:53,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:11:53,067 INFO L87 Difference]: Start difference. First operand 748 states and 1217 transitions. Second operand has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2025-03-03 14:11:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:53,123 INFO L93 Difference]: Finished difference Result 1493 states and 2428 transitions. [2025-03-03 14:11:53,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:11:53,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 153 [2025-03-03 14:11:53,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:53,129 INFO L225 Difference]: With dead ends: 1493 [2025-03-03 14:11:53,129 INFO L226 Difference]: Without dead ends: 762 [2025-03-03 14:11:53,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:11:53,132 INFO L435 NwaCegarLoop]: 1010 mSDtfsCounter, 122 mSDsluCounter, 4911 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5921 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:53,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5921 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2025-03-03 14:11:53,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 741. [2025-03-03 14:11:53,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 595 states have (on average 1.6470588235294117) internal successors, (980), 613 states have internal predecessors, (980), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2025-03-03 14:11:53,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1201 transitions. [2025-03-03 14:11:53,147 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1201 transitions. Word has length 153 [2025-03-03 14:11:53,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:53,147 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 1201 transitions. [2025-03-03 14:11:53,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2025-03-03 14:11:53,147 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1201 transitions. [2025-03-03 14:11:53,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-03 14:11:53,149 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:53,149 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:11:53,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:53,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:53,350 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:53,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:53,351 INFO L85 PathProgramCache]: Analyzing trace with hash 13984974, now seen corresponding path program 1 times [2025-03-03 14:11:53,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:53,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975921924] [2025-03-03 14:11:53,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:53,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:53,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-03 14:11:53,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-03 14:11:53,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:53,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-03 14:11:53,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:53,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975921924] [2025-03-03 14:11:53,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975921924] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:53,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:11:53,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:11:53,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616662881] [2025-03-03 14:11:53,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:53,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:53,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:53,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:53,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:11:53,411 INFO L87 Difference]: Start difference. First operand 741 states and 1201 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2025-03-03 14:11:53,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:53,445 INFO L93 Difference]: Finished difference Result 1437 states and 2345 transitions. [2025-03-03 14:11:53,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:53,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 154 [2025-03-03 14:11:53,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:53,449 INFO L225 Difference]: With dead ends: 1437 [2025-03-03 14:11:53,449 INFO L226 Difference]: Without dead ends: 713 [2025-03-03 14:11:53,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:11:53,452 INFO L435 NwaCegarLoop]: 999 mSDtfsCounter, 8 mSDsluCounter, 1992 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:53,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2991 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:53,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2025-03-03 14:11:53,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2025-03-03 14:11:53,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 570 states have (on average 1.6403508771929824) internal successors, (935), 586 states have internal predecessors, (935), 108 states have call successors, (108), 36 states have call predecessors, (108), 34 states have return successors, (109), 103 states have call predecessors, (109), 105 states have call successors, (109) [2025-03-03 14:11:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1152 transitions. [2025-03-03 14:11:53,465 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1152 transitions. Word has length 154 [2025-03-03 14:11:53,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:53,465 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1152 transitions. [2025-03-03 14:11:53,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2025-03-03 14:11:53,465 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1152 transitions. [2025-03-03 14:11:53,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-03 14:11:53,467 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:53,467 INFO L218 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, 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] [2025-03-03 14:11:53,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-03 14:11:53,467 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:53,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:53,471 INFO L85 PathProgramCache]: Analyzing trace with hash 601671997, now seen corresponding path program 1 times [2025-03-03 14:11:53,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:53,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771010459] [2025-03-03 14:11:53,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:53,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:53,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-03 14:11:53,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-03 14:11:53,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:53,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-03 14:11:53,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:53,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771010459] [2025-03-03 14:11:53,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771010459] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:53,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:11:53,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:11:53,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757587148] [2025-03-03 14:11:53,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:53,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:53,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:53,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:53,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:11:53,573 INFO L87 Difference]: Start difference. First operand 713 states and 1152 transitions. Second operand has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2025-03-03 14:11:53,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:53,631 INFO L93 Difference]: Finished difference Result 1364 states and 2219 transitions. [2025-03-03 14:11:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:11:53,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 154 [2025-03-03 14:11:53,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:53,635 INFO L225 Difference]: With dead ends: 1364 [2025-03-03 14:11:53,635 INFO L226 Difference]: Without dead ends: 708 [2025-03-03 14:11:53,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:11:53,637 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 126 mSDsluCounter, 4865 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5863 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:53,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5863 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:53,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2025-03-03 14:11:53,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 699. [2025-03-03 14:11:53,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 556 states have (on average 1.631294964028777) internal successors, (907), 572 states have internal predecessors, (907), 108 states have call successors, (108), 36 states have call predecessors, (108), 34 states have return successors, (109), 103 states have call predecessors, (109), 105 states have call successors, (109) [2025-03-03 14:11:53,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1124 transitions. [2025-03-03 14:11:53,649 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1124 transitions. Word has length 154 [2025-03-03 14:11:53,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:53,649 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 1124 transitions. [2025-03-03 14:11:53,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2025-03-03 14:11:53,649 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1124 transitions. [2025-03-03 14:11:53,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-03 14:11:53,651 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:53,651 INFO L218 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, 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] [2025-03-03 14:11:53,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-03 14:11:53,651 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:53,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:53,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1286276780, now seen corresponding path program 1 times [2025-03-03 14:11:53,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:53,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143629809] [2025-03-03 14:11:53,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:53,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:53,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-03 14:11:53,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-03 14:11:53,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:53,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:53,820 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 14:11:53,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:53,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143629809] [2025-03-03 14:11:53,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143629809] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:53,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41182666] [2025-03-03 14:11:53,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:53,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:53,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:53,823 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) [2025-03-03 14:11:53,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-03 14:11:53,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-03 14:11:54,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-03 14:11:54,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:54,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:54,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-03 14:11:54,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-03 14:11:54,175 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:54,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41182666] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:54,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:54,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2025-03-03 14:11:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985855305] [2025-03-03 14:11:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:54,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:11:54,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:54,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:11:54,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:11:54,176 INFO L87 Difference]: Start difference. First operand 699 states and 1124 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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) [2025-03-03 14:11:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:54,508 INFO L93 Difference]: Finished difference Result 1963 states and 3242 transitions. [2025-03-03 14:11:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:11:54,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 155 [2025-03-03 14:11:54,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:54,514 INFO L225 Difference]: With dead ends: 1963 [2025-03-03 14:11:54,514 INFO L226 Difference]: Without dead ends: 1334 [2025-03-03 14:11:54,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:11:54,516 INFO L435 NwaCegarLoop]: 1062 mSDtfsCounter, 924 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 3928 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:54,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 3928 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:11:54,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2025-03-03 14:11:54,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1324. [2025-03-03 14:11:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1052 states have (on average 1.647338403041825) internal successors, (1733), 1084 states have internal predecessors, (1733), 206 states have call successors, (206), 66 states have call predecessors, (206), 65 states have return successors, (230), 199 states have call predecessors, (230), 202 states have call successors, (230) [2025-03-03 14:11:54,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2169 transitions. [2025-03-03 14:11:54,546 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2169 transitions. Word has length 155 [2025-03-03 14:11:54,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:54,546 INFO L471 AbstractCegarLoop]: Abstraction has 1324 states and 2169 transitions. [2025-03-03 14:11:54,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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) [2025-03-03 14:11:54,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2169 transitions. [2025-03-03 14:11:54,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-03-03 14:11:54,548 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:54,549 INFO L218 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, 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] [2025-03-03 14:11:54,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:54,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:54,750 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:54,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:54,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2042861678, now seen corresponding path program 1 times [2025-03-03 14:11:54,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:54,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20714526] [2025-03-03 14:11:54,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:54,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:54,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-03 14:11:54,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-03 14:11:54,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:54,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 14:11:54,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:54,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20714526] [2025-03-03 14:11:54,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20714526] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:54,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047041118] [2025-03-03 14:11:54,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:54,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:54,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:54,982 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) [2025-03-03 14:11:54,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-03 14:11:55,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-03 14:11:55,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-03 14:11:55,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:55,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:55,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:11:55,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-03 14:11:55,226 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:55,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047041118] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:55,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:55,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-03 14:11:55,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972563017] [2025-03-03 14:11:55,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:55,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:11:55,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:55,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:11:55,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:11:55,227 INFO L87 Difference]: Start difference. First operand 1324 states and 2169 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:11:55,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:55,291 INFO L93 Difference]: Finished difference Result 3198 states and 5317 transitions. [2025-03-03 14:11:55,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:11:55,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2025-03-03 14:11:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:55,303 INFO L225 Difference]: With dead ends: 3198 [2025-03-03 14:11:55,303 INFO L226 Difference]: Without dead ends: 1945 [2025-03-03 14:11:55,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:11:55,308 INFO L435 NwaCegarLoop]: 1878 mSDtfsCounter, 976 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:55,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 2880 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:55,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2025-03-03 14:11:55,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1324. [2025-03-03 14:11:55,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1052 states have (on average 1.6463878326996197) internal successors, (1732), 1084 states have internal predecessors, (1732), 206 states have call successors, (206), 66 states have call predecessors, (206), 65 states have return successors, (230), 199 states have call predecessors, (230), 202 states have call successors, (230) [2025-03-03 14:11:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2168 transitions. [2025-03-03 14:11:55,347 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2168 transitions. Word has length 160 [2025-03-03 14:11:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:55,347 INFO L471 AbstractCegarLoop]: Abstraction has 1324 states and 2168 transitions. [2025-03-03 14:11:55,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:11:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2168 transitions. [2025-03-03 14:11:55,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-03-03 14:11:55,349 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:55,350 INFO L218 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, 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] [2025-03-03 14:11:55,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:55,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-03 14:11:55,551 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:55,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:55,552 INFO L85 PathProgramCache]: Analyzing trace with hash 32757837, now seen corresponding path program 1 times [2025-03-03 14:11:55,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:55,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866742023] [2025-03-03 14:11:55,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:55,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:55,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-03 14:11:55,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-03 14:11:55,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:55,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 14:11:55,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:55,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866742023] [2025-03-03 14:11:55,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866742023] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:55,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203274660] [2025-03-03 14:11:55,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:55,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:55,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:55,724 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) [2025-03-03 14:11:55,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-03 14:11:55,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-03 14:11:55,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-03 14:11:55,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:55,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:55,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 14:11:55,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:55,987 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-03 14:11:55,987 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:55,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203274660] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:55,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:55,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-03-03 14:11:55,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016883844] [2025-03-03 14:11:55,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:55,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:11:55,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:55,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:11:55,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:11:55,988 INFO L87 Difference]: Start difference. First operand 1324 states and 2168 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 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) [2025-03-03 14:11:56,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:56,265 INFO L93 Difference]: Finished difference Result 1947 states and 3219 transitions. [2025-03-03 14:11:56,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:11:56,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 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 160 [2025-03-03 14:11:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:56,273 INFO L225 Difference]: With dead ends: 1947 [2025-03-03 14:11:56,274 INFO L226 Difference]: Without dead ends: 1944 [2025-03-03 14:11:56,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:11:56,279 INFO L435 NwaCegarLoop]: 1881 mSDtfsCounter, 948 mSDsluCounter, 5518 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 7399 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:56,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 7399 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 14:11:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2025-03-03 14:11:56,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1936. [2025-03-03 14:11:56,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1936 states, 1540 states have (on average 1.655194805194805) internal successors, (2549), 1584 states have internal predecessors, (2549), 302 states have call successors, (302), 95 states have call predecessors, (302), 93 states have return successors, (346), 295 states have call predecessors, (346), 297 states have call successors, (346) [2025-03-03 14:11:56,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 3197 transitions. [2025-03-03 14:11:56,329 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 3197 transitions. Word has length 160 [2025-03-03 14:11:56,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:56,329 INFO L471 AbstractCegarLoop]: Abstraction has 1936 states and 3197 transitions. [2025-03-03 14:11:56,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 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) [2025-03-03 14:11:56,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 3197 transitions. [2025-03-03 14:11:56,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-03-03 14:11:56,332 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:56,332 INFO L218 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, 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] [2025-03-03 14:11:56,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:56,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-03 14:11:56,533 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:56,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:56,533 INFO L85 PathProgramCache]: Analyzing trace with hash -140815249, now seen corresponding path program 1 times [2025-03-03 14:11:56,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:56,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114191347] [2025-03-03 14:11:56,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:56,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:56,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-03 14:11:56,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-03 14:11:56,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:56,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 14:11:56,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:56,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114191347] [2025-03-03 14:11:56,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114191347] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:56,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430868840] [2025-03-03 14:11:56,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:56,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:56,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:56,683 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) [2025-03-03 14:11:56,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-03 14:11:56,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-03 14:11:56,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-03 14:11:56,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:56,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:56,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:11:56,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-03 14:11:56,915 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:56,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430868840] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:56,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:56,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-03 14:11:56,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900678742] [2025-03-03 14:11:56,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:56,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:56,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:56,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:56,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:11:56,916 INFO L87 Difference]: Start difference. First operand 1936 states and 3197 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:11:57,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:57,002 INFO L93 Difference]: Finished difference Result 3820 states and 6376 transitions. [2025-03-03 14:11:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:57,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2025-03-03 14:11:57,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:57,011 INFO L225 Difference]: With dead ends: 3820 [2025-03-03 14:11:57,011 INFO L226 Difference]: Without dead ends: 1954 [2025-03-03 14:11:57,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:11:57,016 INFO L435 NwaCegarLoop]: 1005 mSDtfsCounter, 26 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:57,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2981 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:57,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2025-03-03 14:11:57,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1954. [2025-03-03 14:11:57,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1555 states have (on average 1.6508038585209004) internal successors, (2567), 1599 states have internal predecessors, (2567), 302 states have call successors, (302), 98 states have call predecessors, (302), 96 states have return successors, (346), 295 states have call predecessors, (346), 297 states have call successors, (346) [2025-03-03 14:11:57,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 3215 transitions. [2025-03-03 14:11:57,065 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 3215 transitions. Word has length 160 [2025-03-03 14:11:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:57,065 INFO L471 AbstractCegarLoop]: Abstraction has 1954 states and 3215 transitions. [2025-03-03 14:11:57,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:11:57,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 3215 transitions. [2025-03-03 14:11:57,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-03-03 14:11:57,070 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:57,070 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:11:57,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-03-03 14:11:57,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-03 14:11:57,270 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:57,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:57,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1617950732, now seen corresponding path program 1 times [2025-03-03 14:11:57,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:57,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780234461] [2025-03-03 14:11:57,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:57,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:57,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-03 14:11:57,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-03 14:11:57,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:57,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 14:11:57,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:57,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780234461] [2025-03-03 14:11:57,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780234461] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:57,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651522306] [2025-03-03 14:11:57,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:57,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:57,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:57,420 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) [2025-03-03 14:11:57,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-03 14:11:57,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-03 14:11:57,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-03 14:11:57,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:57,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:57,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 14:11:57,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-03 14:11:57,802 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:57,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651522306] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:57,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:57,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2025-03-03 14:11:57,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499095953] [2025-03-03 14:11:57,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:57,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:57,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:57,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:57,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2025-03-03 14:11:57,803 INFO L87 Difference]: Start difference. First operand 1954 states and 3215 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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) [2025-03-03 14:12:00,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:12:00,740 INFO L93 Difference]: Finished difference Result 6855 states and 11539 transitions. [2025-03-03 14:12:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:12:00,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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 162 [2025-03-03 14:12:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:12:00,761 INFO L225 Difference]: With dead ends: 6855 [2025-03-03 14:12:00,761 INFO L226 Difference]: Without dead ends: 4971 [2025-03-03 14:12:00,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2025-03-03 14:12:00,772 INFO L435 NwaCegarLoop]: 463 mSDtfsCounter, 3316 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 5311 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3433 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 6093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 5311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-03 14:12:00,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3433 Valid, 1460 Invalid, 6093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [782 Valid, 5311 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-03 14:12:00,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4971 states. [2025-03-03 14:12:00,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4971 to 4697. [2025-03-03 14:12:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4697 states, 3720 states have (on average 1.6389784946236559) internal successors, (6097), 3819 states have internal predecessors, (6097), 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) [2025-03-03 14:12:00,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4697 states to 4697 states and 7781 transitions. [2025-03-03 14:12:00,904 INFO L78 Accepts]: Start accepts. Automaton has 4697 states and 7781 transitions. Word has length 162 [2025-03-03 14:12:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:12:00,905 INFO L471 AbstractCegarLoop]: Abstraction has 4697 states and 7781 transitions. [2025-03-03 14:12:00,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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) [2025-03-03 14:12:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4697 states and 7781 transitions. [2025-03-03 14:12:00,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-03 14:12:00,908 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:12:00,908 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:12:00,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-03 14:12:01,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-03 14:12:01,109 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:12:01,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:12:01,110 INFO L85 PathProgramCache]: Analyzing trace with hash -407210858, now seen corresponding path program 1 times [2025-03-03 14:12:01,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:12:01,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588867942] [2025-03-03 14:12:01,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:01,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:12:01,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-03 14:12:01,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-03 14:12:01,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:01,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 14:12:01,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:12:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588867942] [2025-03-03 14:12:01,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588867942] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:12:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460579155] [2025-03-03 14:12:01,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:01,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:12:01,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:12:01,319 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) [2025-03-03 14:12:01,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-03 14:12:01,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-03 14:12:01,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-03 14:12:01,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:01,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:01,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 14:12:01,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:12:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-03 14:12:01,704 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:12:01,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460579155] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:12:01,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:12:01,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2025-03-03 14:12:01,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053535346] [2025-03-03 14:12:01,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:12:01,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:12:01,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:12:01,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:12:01,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:12:01,706 INFO L87 Difference]: Start difference. First operand 4697 states and 7781 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 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) [2025-03-03 14:12:02,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:12:02,390 INFO L93 Difference]: Finished difference Result 10560 states and 17669 transitions. [2025-03-03 14:12:02,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:12:02,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 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 163 [2025-03-03 14:12:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:12:02,425 INFO L225 Difference]: With dead ends: 10560 [2025-03-03 14:12:02,426 INFO L226 Difference]: Without dead ends: 5922 [2025-03-03 14:12:02,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2025-03-03 14:12:02,444 INFO L435 NwaCegarLoop]: 1353 mSDtfsCounter, 1756 mSDsluCounter, 4390 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 5743 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 14:12:02,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1758 Valid, 5743 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 14:12:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2025-03-03 14:12:02,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 5907. [2025-03-03 14:12:02,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5907 states, 4755 states have (on average 1.6296529968454259) internal successors, (7749), 4856 states have internal predecessors, (7749), 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) [2025-03-03 14:12:02,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5907 states to 5907 states and 9847 transitions. [2025-03-03 14:12:02,686 INFO L78 Accepts]: Start accepts. Automaton has 5907 states and 9847 transitions. Word has length 163 [2025-03-03 14:12:02,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:12:02,687 INFO L471 AbstractCegarLoop]: Abstraction has 5907 states and 9847 transitions. [2025-03-03 14:12:02,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 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) [2025-03-03 14:12:02,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5907 states and 9847 transitions. [2025-03-03 14:12:02,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-03 14:12:02,690 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:12:02,690 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:12:02,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-03-03 14:12:02,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:12:02,891 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:12:02,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:12:02,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1405649410, now seen corresponding path program 1 times [2025-03-03 14:12:02,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:12:02,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996205756] [2025-03-03 14:12:02,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:02,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:12:02,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-03 14:12:02,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-03 14:12:02,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:02,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-03 14:12:03,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:12:03,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996205756] [2025-03-03 14:12:03,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996205756] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:12:03,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807576418] [2025-03-03 14:12:03,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:03,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:12:03,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:12:03,160 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) [2025-03-03 14:12:03,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-03 14:12:03,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-03 14:12:03,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-03 14:12:03,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:03,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:03,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 14:12:03,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:12:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:12:03,511 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:12:03,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807576418] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:12:03,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:12:03,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2025-03-03 14:12:03,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132422742] [2025-03-03 14:12:03,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:12:03,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:12:03,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:12:03,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:12:03,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2025-03-03 14:12:03,512 INFO L87 Difference]: Start difference. First operand 5907 states and 9847 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 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) [2025-03-03 14:12:06,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:12:06,198 INFO L93 Difference]: Finished difference Result 11490 states and 19168 transitions. [2025-03-03 14:12:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:12:06,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 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 165 [2025-03-03 14:12:06,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:12:06,229 INFO L225 Difference]: With dead ends: 11490 [2025-03-03 14:12:06,229 INFO L226 Difference]: Without dead ends: 6370 [2025-03-03 14:12:06,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2025-03-03 14:12:06,249 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 3256 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 5261 mSolverCounterSat, 738 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3373 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 5999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 5261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:12:06,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3373 Valid, 1539 Invalid, 5999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [738 Valid, 5261 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-03 14:12:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6370 states. [2025-03-03 14:12:06,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6370 to 5903. [2025-03-03 14:12:06,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5903 states, 4751 states have (on average 1.6284992633129867) internal successors, (7737), 4852 states have internal predecessors, (7737), 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) [2025-03-03 14:12:06,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5903 states to 5903 states and 9835 transitions. [2025-03-03 14:12:06,442 INFO L78 Accepts]: Start accepts. Automaton has 5903 states and 9835 transitions. Word has length 165 [2025-03-03 14:12:06,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:12:06,442 INFO L471 AbstractCegarLoop]: Abstraction has 5903 states and 9835 transitions. [2025-03-03 14:12:06,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 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) [2025-03-03 14:12:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand 5903 states and 9835 transitions. [2025-03-03 14:12:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-03 14:12:06,447 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:12:06,448 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:12:06,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-03 14:12:06,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:12:06,648 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:12:06,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:12:06,649 INFO L85 PathProgramCache]: Analyzing trace with hash 418258998, now seen corresponding path program 1 times [2025-03-03 14:12:06,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:12:06,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799251823] [2025-03-03 14:12:06,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:06,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:12:06,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-03 14:12:06,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-03 14:12:06,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:06,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-03 14:12:06,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:12:06,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799251823] [2025-03-03 14:12:06,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799251823] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:12:06,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222026289] [2025-03-03 14:12:06,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:06,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:12:06,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:12:06,887 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) [2025-03-03 14:12:06,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-03 14:12:07,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-03 14:12:07,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-03 14:12:07,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:07,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:07,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:12:07,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:12:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-03 14:12:07,130 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:12:07,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222026289] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:12:07,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:12:07,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-03 14:12:07,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654466700] [2025-03-03 14:12:07,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:12:07,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:12:07,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:12:07,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:12:07,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:12:07,131 INFO L87 Difference]: Start difference. First operand 5903 states and 9835 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2025-03-03 14:12:07,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:12:07,308 INFO L93 Difference]: Finished difference Result 11770 states and 20042 transitions. [2025-03-03 14:12:07,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:12:07,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 167 [2025-03-03 14:12:07,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:12:07,333 INFO L225 Difference]: With dead ends: 11770 [2025-03-03 14:12:07,334 INFO L226 Difference]: Without dead ends: 5890 [2025-03-03 14:12:07,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:12:07,358 INFO L435 NwaCegarLoop]: 1004 mSDtfsCounter, 32 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2976 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:12:07,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2976 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:12:07,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5890 states. [2025-03-03 14:12:07,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5890 to 5890. [2025-03-03 14:12:07,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5890 states, 4738 states have (on average 1.6219924018573237) internal successors, (7685), 4839 states have internal predecessors, (7685), 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) [2025-03-03 14:12:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 9783 transitions. [2025-03-03 14:12:07,567 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 9783 transitions. Word has length 167 [2025-03-03 14:12:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:12:07,568 INFO L471 AbstractCegarLoop]: Abstraction has 5890 states and 9783 transitions. [2025-03-03 14:12:07,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2025-03-03 14:12:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 9783 transitions. [2025-03-03 14:12:07,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-03 14:12:07,571 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:12:07,571 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:12:07,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2025-03-03 14:12:07,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-03-03 14:12:07,771 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:12:07,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:12:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash -235319170, now seen corresponding path program 1 times [2025-03-03 14:12:07,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:12:07,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006012406] [2025-03-03 14:12:07,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:07,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:12:07,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-03 14:12:07,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-03 14:12:07,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:07,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:12:07,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:12:07,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006012406] [2025-03-03 14:12:07,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006012406] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:12:07,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894367175] [2025-03-03 14:12:07,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:07,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:12:07,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:12:07,946 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) [2025-03-03 14:12:07,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-03 14:12:08,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-03 14:12:08,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-03 14:12:08,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:08,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:08,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 14:12:08,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:12:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:12:08,396 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:12:08,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894367175] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:12:08,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:12:08,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2025-03-03 14:12:08,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304744657] [2025-03-03 14:12:08,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:12:08,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:12:08,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:12:08,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:12:08,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2025-03-03 14:12:08,398 INFO L87 Difference]: Start difference. First operand 5890 states and 9783 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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) [2025-03-03 14:12:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:12:11,147 INFO L93 Difference]: Finished difference Result 17750 states and 30808 transitions. [2025-03-03 14:12:11,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 14:12:11,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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 168 [2025-03-03 14:12:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:12:11,199 INFO L225 Difference]: With dead ends: 17750 [2025-03-03 14:12:11,199 INFO L226 Difference]: Without dead ends: 11928 [2025-03-03 14:12:11,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2025-03-03 14:12:11,233 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 6077 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 3584 mSolverCounterSat, 1606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6190 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 5190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1606 IncrementalHoareTripleChecker+Valid, 3584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:12:11,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6190 Valid, 1119 Invalid, 5190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1606 Valid, 3584 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-03 14:12:11,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11928 states. [2025-03-03 14:12:11,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11928 to 10502. [2025-03-03 14:12:11,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10502 states, 8432 states have (on average 1.5938092979127134) internal successors, (13439), 8620 states have internal predecessors, (13439), 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) [2025-03-03 14:12:11,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10502 states to 10502 states and 17147 transitions. [2025-03-03 14:12:11,743 INFO L78 Accepts]: Start accepts. Automaton has 10502 states and 17147 transitions. Word has length 168 [2025-03-03 14:12:11,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:12:11,744 INFO L471 AbstractCegarLoop]: Abstraction has 10502 states and 17147 transitions. [2025-03-03 14:12:11,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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) [2025-03-03 14:12:11,744 INFO L276 IsEmpty]: Start isEmpty. Operand 10502 states and 17147 transitions. [2025-03-03 14:12:11,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-03 14:12:11,746 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:12:11,746 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:12:11,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-03 14:12:11,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:12:11,947 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:12:11,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:12:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash 342072540, now seen corresponding path program 1 times [2025-03-03 14:12:11,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:12:11,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892960818] [2025-03-03 14:12:11,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:11,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:12:11,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-03 14:12:11,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-03 14:12:11,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:11,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:12:12,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:12:12,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892960818] [2025-03-03 14:12:12,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892960818] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:12:12,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840821912] [2025-03-03 14:12:12,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:12,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:12:12,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:12:12,148 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) [2025-03-03 14:12:12,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-03 14:12:12,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-03 14:12:12,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-03 14:12:12,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:12,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:12,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 14:12:12,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:12:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:12:12,529 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:12:12,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840821912] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:12:12,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:12:12,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2025-03-03 14:12:12,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524120738] [2025-03-03 14:12:12,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:12:12,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:12:12,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:12:12,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:12:12,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2025-03-03 14:12:12,531 INFO L87 Difference]: Start difference. First operand 10502 states and 17147 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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) [2025-03-03 14:12:15,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:12:15,686 INFO L93 Difference]: Finished difference Result 20888 states and 34288 transitions. [2025-03-03 14:12:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:12:15,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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 169 [2025-03-03 14:12:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:12:15,729 INFO L225 Difference]: With dead ends: 20888 [2025-03-03 14:12:15,729 INFO L226 Difference]: Without dead ends: 11246 [2025-03-03 14:12:15,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2025-03-03 14:12:15,761 INFO L435 NwaCegarLoop]: 530 mSDtfsCounter, 3154 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 6235 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3275 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 6952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 6235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-03 14:12:15,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3275 Valid, 1768 Invalid, 6952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 6235 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-03 14:12:15,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11246 states. [2025-03-03 14:12:16,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11246 to 10490. [2025-03-03 14:12:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10490 states, 8420 states have (on average 1.5918052256532067) internal successors, (13403), 8608 states have internal predecessors, (13403), 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) [2025-03-03 14:12:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10490 states to 10490 states and 17111 transitions. [2025-03-03 14:12:16,100 INFO L78 Accepts]: Start accepts. Automaton has 10490 states and 17111 transitions. Word has length 169 [2025-03-03 14:12:16,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:12:16,101 INFO L471 AbstractCegarLoop]: Abstraction has 10490 states and 17111 transitions. [2025-03-03 14:12:16,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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) [2025-03-03 14:12:16,102 INFO L276 IsEmpty]: Start isEmpty. Operand 10490 states and 17111 transitions. [2025-03-03 14:12:16,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-03 14:12:16,103 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:12:16,103 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:12:16,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2025-03-03 14:12:16,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:12:16,304 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:12:16,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:12:16,305 INFO L85 PathProgramCache]: Analyzing trace with hash -879239772, now seen corresponding path program 1 times [2025-03-03 14:12:16,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:12:16,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026314806] [2025-03-03 14:12:16,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:16,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:12:16,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-03 14:12:16,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-03 14:12:16,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:16,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:12:16,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:12:16,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026314806] [2025-03-03 14:12:16,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026314806] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:12:16,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420539508] [2025-03-03 14:12:16,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:16,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:12:16,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:12:16,559 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) [2025-03-03 14:12:16,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-03 14:12:16,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-03 14:12:16,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-03 14:12:16,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:16,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:16,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:12:16,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:12:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:12:16,809 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:12:16,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420539508] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:12:16,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:12:16,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2025-03-03 14:12:16,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395160450] [2025-03-03 14:12:16,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:12:16,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:12:16,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:12:16,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:12:16,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:12:16,810 INFO L87 Difference]: Start difference. First operand 10490 states and 17111 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:12:17,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:12:17,108 INFO L93 Difference]: Finished difference Result 21055 states and 34741 transitions. [2025-03-03 14:12:17,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:12:17,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 171 [2025-03-03 14:12:17,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:12:17,151 INFO L225 Difference]: With dead ends: 21055 [2025-03-03 14:12:17,151 INFO L226 Difference]: Without dead ends: 10640 [2025-03-03 14:12:17,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:12:17,224 INFO L435 NwaCegarLoop]: 1011 mSDtfsCounter, 0 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4027 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:12:17,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4027 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:12:17,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10640 states. [2025-03-03 14:12:17,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10640 to 10566. [2025-03-03 14:12:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10566 states, 8483 states have (on average 1.5874101143463397) internal successors, (13466), 8659 states have internal predecessors, (13466), 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) [2025-03-03 14:12:17,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10566 states to 10566 states and 17199 transitions. [2025-03-03 14:12:17,745 INFO L78 Accepts]: Start accepts. Automaton has 10566 states and 17199 transitions. Word has length 171 [2025-03-03 14:12:17,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:12:17,746 INFO L471 AbstractCegarLoop]: Abstraction has 10566 states and 17199 transitions. [2025-03-03 14:12:17,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:12:17,747 INFO L276 IsEmpty]: Start isEmpty. Operand 10566 states and 17199 transitions. [2025-03-03 14:12:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-03 14:12:17,749 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:12:17,750 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:12:17,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-03 14:12:17,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-03-03 14:12:17,950 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:12:17,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:12:17,951 INFO L85 PathProgramCache]: Analyzing trace with hash -824656812, now seen corresponding path program 1 times [2025-03-03 14:12:17,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:12:17,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094736562] [2025-03-03 14:12:17,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:17,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:12:17,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-03 14:12:17,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-03 14:12:17,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:17,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:18,095 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 14:12:18,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:12:18,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094736562] [2025-03-03 14:12:18,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094736562] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:12:18,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569276582] [2025-03-03 14:12:18,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:18,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:12:18,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:12:18,098 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) [2025-03-03 14:12:18,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-03 14:12:18,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-03 14:12:18,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-03 14:12:18,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:18,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:18,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:12:18,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:12:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:12:18,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:12:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-03 14:12:18,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569276582] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:12:18,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:12:18,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 21 [2025-03-03 14:12:18,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459926840] [2025-03-03 14:12:18,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:12:18,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-03 14:12:18,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:12:18,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-03 14:12:18,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2025-03-03 14:12:18,765 INFO L87 Difference]: Start difference. First operand 10566 states and 17199 transitions. Second operand has 21 states, 21 states have (on average 13.761904761904763) internal successors, (289), 19 states have internal predecessors, (289), 9 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2025-03-03 14:12:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:12:37,406 INFO L93 Difference]: Finished difference Result 78265 states and 150490 transitions. [2025-03-03 14:12:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2025-03-03 14:12:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 13.761904761904763) internal successors, (289), 19 states have internal predecessors, (289), 9 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) Word has length 176 [2025-03-03 14:12:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:12:37,770 INFO L225 Difference]: With dead ends: 78265 [2025-03-03 14:12:37,770 INFO L226 Difference]: Without dead ends: 67722 [2025-03-03 14:12:38,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 395 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8816 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3487, Invalid=17105, Unknown=0, NotChecked=0, Total=20592 [2025-03-03 14:12:38,064 INFO L435 NwaCegarLoop]: 1170 mSDtfsCounter, 20125 mSDsluCounter, 8554 mSDsCounter, 0 mSdLazyCounter, 33077 mSolverCounterSat, 7524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20146 SdHoareTripleChecker+Valid, 9724 SdHoareTripleChecker+Invalid, 40601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7524 IncrementalHoareTripleChecker+Valid, 33077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2025-03-03 14:12:38,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20146 Valid, 9724 Invalid, 40601 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7524 Valid, 33077 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2025-03-03 14:12:38,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67722 states. [2025-03-03 14:12:40,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67722 to 50325. [2025-03-03 14:12:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50325 states, 39628 states have (on average 1.5642475017664277) internal successors, (61988), 40922 states have internal predecessors, (61988), 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) [2025-03-03 14:12:40,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50325 states to 50325 states and 81908 transitions. [2025-03-03 14:12:40,938 INFO L78 Accepts]: Start accepts. Automaton has 50325 states and 81908 transitions. Word has length 176 [2025-03-03 14:12:40,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:12:40,938 INFO L471 AbstractCegarLoop]: Abstraction has 50325 states and 81908 transitions. [2025-03-03 14:12:40,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 13.761904761904763) internal successors, (289), 19 states have internal predecessors, (289), 9 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2025-03-03 14:12:40,939 INFO L276 IsEmpty]: Start isEmpty. Operand 50325 states and 81908 transitions. [2025-03-03 14:12:40,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2025-03-03 14:12:40,944 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:12:40,945 INFO L218 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:12:40,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-03-03 14:12:41,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-03-03 14:12:41,145 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:12:41,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:12:41,147 INFO L85 PathProgramCache]: Analyzing trace with hash 694538866, now seen corresponding path program 1 times [2025-03-03 14:12:41,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:12:41,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179271238] [2025-03-03 14:12:41,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:41,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:12:41,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 194 statements into 1 equivalence classes. [2025-03-03 14:12:41,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 194 of 194 statements. [2025-03-03 14:12:41,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:41,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-03-03 14:12:41,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:12:41,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179271238] [2025-03-03 14:12:41,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179271238] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:12:41,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293583529] [2025-03-03 14:12:41,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:41,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:12:41,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:12:41,245 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) [2025-03-03 14:12:41,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-03 14:12:41,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 194 statements into 1 equivalence classes. [2025-03-03 14:12:41,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 194 of 194 statements. [2025-03-03 14:12:41,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:41,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:41,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:12:41,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:12:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-03-03 14:12:41,496 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:12:41,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293583529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:12:41,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:12:41,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2025-03-03 14:12:41,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99350833] [2025-03-03 14:12:41,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:12:41,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:12:41,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:12:41,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:12:41,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:12:41,498 INFO L87 Difference]: Start difference. First operand 50325 states and 81908 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:12:44,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:12:44,319 INFO L93 Difference]: Finished difference Result 99096 states and 161010 transitions. [2025-03-03 14:12:44,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:12:44,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 194 [2025-03-03 14:12:44,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:12:44,543 INFO L225 Difference]: With dead ends: 99096 [2025-03-03 14:12:44,544 INFO L226 Difference]: Without dead ends: 49196 [2025-03-03 14:12:44,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:12:44,723 INFO L435 NwaCegarLoop]: 1000 mSDtfsCounter, 46 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:12:44,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2939 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:12:44,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49196 states. [2025-03-03 14:12:46,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49196 to 49196. [2025-03-03 14:12:46,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49196 states, 38642 states have (on average 1.5602194503390094) internal successors, (60290), 39934 states have internal predecessors, (60290), 7377 states have call successors, (7377), 2637 states have call predecessors, (7377), 3176 states have return successors, (12191), 7523 states have call predecessors, (12191), 7337 states have call successors, (12191) [2025-03-03 14:12:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49196 states to 49196 states and 79858 transitions. [2025-03-03 14:12:46,756 INFO L78 Accepts]: Start accepts. Automaton has 49196 states and 79858 transitions. Word has length 194 [2025-03-03 14:12:46,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:12:46,756 INFO L471 AbstractCegarLoop]: Abstraction has 49196 states and 79858 transitions. [2025-03-03 14:12:46,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:12:46,756 INFO L276 IsEmpty]: Start isEmpty. Operand 49196 states and 79858 transitions. [2025-03-03 14:12:46,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2025-03-03 14:12:46,759 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:12:46,759 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:12:46,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-03-03 14:12:46,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-03-03 14:12:46,959 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:12:46,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:12:46,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1702868913, now seen corresponding path program 1 times [2025-03-03 14:12:46,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:12:46,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121167274] [2025-03-03 14:12:46,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:46,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:12:46,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 201 statements into 1 equivalence classes. [2025-03-03 14:12:46,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 201 of 201 statements. [2025-03-03 14:12:46,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:46,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-03 14:12:47,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:12:47,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121167274] [2025-03-03 14:12:47,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121167274] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:12:47,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414662502] [2025-03-03 14:12:47,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:47,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:12:47,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:12:47,108 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:12:47,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-03 14:12:47,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 201 statements into 1 equivalence classes. [2025-03-03 14:12:47,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 201 of 201 statements. [2025-03-03 14:12:47,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:47,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:47,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:12:47,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:12:47,381 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-03 14:12:47,381 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:12:47,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414662502] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:12:47,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:12:47,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2025-03-03 14:12:47,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2692782] [2025-03-03 14:12:47,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:12:47,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:12:47,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:12:47,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:12:47,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:12:47,382 INFO L87 Difference]: Start difference. First operand 49196 states and 79858 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:12:50,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:12:50,130 INFO L93 Difference]: Finished difference Result 97723 states and 160835 transitions. [2025-03-03 14:12:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:12:50,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 201 [2025-03-03 14:12:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:12:50,375 INFO L225 Difference]: With dead ends: 97723 [2025-03-03 14:12:50,375 INFO L226 Difference]: Without dead ends: 49568 [2025-03-03 14:12:50,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:12:50,623 INFO L435 NwaCegarLoop]: 1012 mSDtfsCounter, 0 mSDsluCounter, 5041 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6053 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:12:50,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6053 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:12:50,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49568 states. [2025-03-03 14:12:52,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49568 to 49568. [2025-03-03 14:12:52,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49568 states, 38952 states have (on average 1.5557609365372767) internal successors, (60600), 40244 states have internal predecessors, (60600), 7377 states have call successors, (7377), 2637 states have call predecessors, (7377), 3238 states have return successors, (12284), 7585 states have call predecessors, (12284), 7337 states have call successors, (12284) [2025-03-03 14:12:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49568 states to 49568 states and 80261 transitions. [2025-03-03 14:12:52,918 INFO L78 Accepts]: Start accepts. Automaton has 49568 states and 80261 transitions. Word has length 201 [2025-03-03 14:12:52,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:12:52,919 INFO L471 AbstractCegarLoop]: Abstraction has 49568 states and 80261 transitions. [2025-03-03 14:12:52,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:12:52,919 INFO L276 IsEmpty]: Start isEmpty. Operand 49568 states and 80261 transitions. [2025-03-03 14:12:52,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2025-03-03 14:12:52,921 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:12:52,922 INFO L218 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:12:52,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-03-03 14:12:53,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:12:53,122 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:12:53,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:12:53,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1563642878, now seen corresponding path program 1 times [2025-03-03 14:12:53,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:12:53,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867476897] [2025-03-03 14:12:53,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:53,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:12:53,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 204 statements into 1 equivalence classes. [2025-03-03 14:12:53,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 204 of 204 statements. [2025-03-03 14:12:53,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:53,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:53,298 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-03 14:12:53,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:12:53,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867476897] [2025-03-03 14:12:53,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867476897] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:12:53,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:12:53,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-03 14:12:53,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464330183] [2025-03-03 14:12:53,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:12:53,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 14:12:53,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:12:53,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 14:12:53,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:12:53,299 INFO L87 Difference]: Start difference. First operand 49568 states and 80261 transitions. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 8 states have internal predecessors, (123), 5 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20)