./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-3.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 c24ad121bcc9573550d02da9627a07166858762ae4177dec26b10c884148a83b --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 05:05:29,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 05:05:29,393 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 05:05:29,396 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 05:05:29,397 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 05:05:29,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 05:05:29,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 05:05:29,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 05:05:29,424 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 05:05:29,424 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 05:05:29,424 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 05:05:29,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 05:05:29,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 05:05:29,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 05:05:29,425 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 05:05:29,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 05:05:29,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 05:05:29,425 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 05:05:29,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 05:05:29,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 05:05:29,426 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 05:05:29,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 05:05:29,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 05:05:29,427 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 05:05:29,427 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 05:05:29,427 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 05:05:29,427 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-jdk21/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 -> c24ad121bcc9573550d02da9627a07166858762ae4177dec26b10c884148a83b [2025-02-08 05:05:29,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 05:05:29,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 05:05:29,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 05:05:29,694 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 05:05:29,698 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 05:05:29,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-3.i [2025-02-08 05:05:31,040 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d199fa3cc/eaf3aa7559ed4568b30a88671dafd9cf/FLAG438174708 [2025-02-08 05:05:31,310 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 05:05:31,311 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-3.i [2025-02-08 05:05:31,322 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d199fa3cc/eaf3aa7559ed4568b30a88671dafd9cf/FLAG438174708 [2025-02-08 05:05:31,586 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d199fa3cc/eaf3aa7559ed4568b30a88671dafd9cf [2025-02-08 05:05:31,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 05:05:31,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 05:05:31,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 05:05:31,590 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 05:05:31,593 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 05:05:31,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 05:05:31" (1/1) ... [2025-02-08 05:05:31,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e97e282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:31, skipping insertion in model container [2025-02-08 05:05:31,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 05:05:31" (1/1) ... [2025-02-08 05:05:31,616 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 05:05:31,901 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-3.i[33021,33034] [2025-02-08 05:05:31,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 05:05:32,005 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 05:05:32,035 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-3.i[33021,33034] [2025-02-08 05:05:32,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 05:05:32,136 INFO L204 MainTranslator]: Completed translation [2025-02-08 05:05:32,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:32 WrapperNode [2025-02-08 05:05:32,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 05:05:32,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 05:05:32,140 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 05:05:32,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 05:05:32,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:32" (1/1) ... [2025-02-08 05:05:32,172 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:32" (1/1) ... [2025-02-08 05:05:32,230 INFO L138 Inliner]: procedures = 176, calls = 434, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1844 [2025-02-08 05:05:32,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 05:05:32,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 05:05:32,232 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 05:05:32,232 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 05:05:32,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:32" (1/1) ... [2025-02-08 05:05:32,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:32" (1/1) ... [2025-02-08 05:05:32,251 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:32" (1/1) ... [2025-02-08 05:05:32,372 INFO L175 MemorySlicer]: Split 403 memory accesses to 2 slices as follows [2, 401]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 98 writes are split as follows [0, 98]. [2025-02-08 05:05:32,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:32" (1/1) ... [2025-02-08 05:05:32,372 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:32" (1/1) ... [2025-02-08 05:05:32,430 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:32" (1/1) ... [2025-02-08 05:05:32,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:32" (1/1) ... [2025-02-08 05:05:32,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:32" (1/1) ... [2025-02-08 05:05:32,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:32" (1/1) ... [2025-02-08 05:05:32,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 05:05:32,464 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 05:05:32,464 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 05:05:32,464 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 05:05:32,465 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:32" (1/1) ... [2025-02-08 05:05:32,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 05:05:32,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:05:32,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 05:05:32,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 05:05:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 05:05:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 05:05:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 05:05:32,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 05:05:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 05:05:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 05:05:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 05:05:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 05:05:32,520 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 05:05:32,520 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 05:05:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 05:05:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 05:05:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 05:05:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 05:05:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 05:05:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 05:05:32,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 05:05:32,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 05:05:32,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 05:05:32,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 05:05:32,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 05:05:32,740 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 05:05:32,741 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 05:05:34,027 INFO L? ?]: Removed 424 outVars from TransFormulas that were not future-live. [2025-02-08 05:05:34,027 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 05:05:34,104 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 05:05:34,105 INFO L337 CfgBuilder]: Removed 2 assume(true) statements. [2025-02-08 05:05:34,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 05:05:34 BoogieIcfgContainer [2025-02-08 05:05:34,109 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 05:05:34,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 05:05:34,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 05:05:34,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 05:05:34,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 05:05:31" (1/3) ... [2025-02-08 05:05:34,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f938f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 05:05:34, skipping insertion in model container [2025-02-08 05:05:34,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:32" (2/3) ... [2025-02-08 05:05:34,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f938f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 05:05:34, skipping insertion in model container [2025-02-08 05:05:34,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 05:05:34" (3/3) ... [2025-02-08 05:05:34,124 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-3.i [2025-02-08 05:05:34,142 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 05:05:34,143 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test4-3.i that has 4 procedures, 479 locations, 1 initial locations, 45 loop locations, and 1 error locations. [2025-02-08 05:05:34,213 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 05:05:34,224 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;@16f0b729, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 05:05:34,225 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 05:05:34,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 475 states, 454 states have (on average 1.6233480176211454) internal successors, (737), 465 states have internal predecessors, (737), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-08 05:05:34,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 05:05:34,236 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:34,236 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:34,237 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:34,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:34,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2065092663, now seen corresponding path program 1 times [2025-02-08 05:05:34,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:34,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334085421] [2025-02-08 05:05:34,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:34,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:34,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 05:05:34,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 05:05:34,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:34,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:05:34,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:05:34,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334085421] [2025-02-08 05:05:34,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334085421] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:05:34,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:05:34,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 05:05:34,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357720913] [2025-02-08 05:05:34,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:05:34,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 05:05:34,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:05:34,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 05:05:34,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:05:34,415 INFO L87 Difference]: Start difference. First operand has 475 states, 454 states have (on average 1.6233480176211454) internal successors, (737), 465 states have internal predecessors, (737), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:05:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:05:34,632 INFO L93 Difference]: Finished difference Result 1329 states and 2163 transitions. [2025-02-08 05:05:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 05:05:34,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-08 05:05:34,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:05:34,647 INFO L225 Difference]: With dead ends: 1329 [2025-02-08 05:05:34,647 INFO L226 Difference]: Without dead ends: 790 [2025-02-08 05:05:34,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:05:34,652 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 541 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 05:05:34,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1324 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 05:05:34,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2025-02-08 05:05:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 411. [2025-02-08 05:05:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 393 states have (on average 1.4580152671755726) internal successors, (573), 402 states have internal predecessors, (573), 16 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:05:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 595 transitions. [2025-02-08 05:05:34,697 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 595 transitions. Word has length 8 [2025-02-08 05:05:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:05:34,698 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 595 transitions. [2025-02-08 05:05:34,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:05:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 595 transitions. [2025-02-08 05:05:34,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-08 05:05:34,702 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:34,702 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:34,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 05:05:34,703 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:34,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:34,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1310555401, now seen corresponding path program 1 times [2025-02-08 05:05:34,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:34,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257616290] [2025-02-08 05:05:34,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:34,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:34,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-08 05:05:34,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-08 05:05:34,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:34,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:05:35,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:05:35,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257616290] [2025-02-08 05:05:35,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257616290] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:05:35,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:05:35,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 05:05:35,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905800780] [2025-02-08 05:05:35,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:05:35,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 05:05:35,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:05:35,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 05:05:35,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 05:05:35,397 INFO L87 Difference]: Start difference. First operand 411 states and 595 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:05:35,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:05:35,587 INFO L93 Difference]: Finished difference Result 823 states and 1191 transitions. [2025-02-08 05:05:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 05:05:35,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2025-02-08 05:05:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:05:35,590 INFO L225 Difference]: With dead ends: 823 [2025-02-08 05:05:35,590 INFO L226 Difference]: Without dead ends: 414 [2025-02-08 05:05:35,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 05:05:35,592 INFO L435 NwaCegarLoop]: 523 mSDtfsCounter, 105 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 05:05:35,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1485 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 05:05:35,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2025-02-08 05:05:35,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 411. [2025-02-08 05:05:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 393 states have (on average 1.440203562340967) internal successors, (566), 402 states have internal predecessors, (566), 16 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:05:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 588 transitions. [2025-02-08 05:05:35,612 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 588 transitions. Word has length 152 [2025-02-08 05:05:35,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:05:35,612 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 588 transitions. [2025-02-08 05:05:35,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:05:35,612 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 588 transitions. [2025-02-08 05:05:35,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-08 05:05:35,618 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:35,618 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:35,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 05:05:35,618 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:35,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:35,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2038965474, now seen corresponding path program 1 times [2025-02-08 05:05:35,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:35,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233884464] [2025-02-08 05:05:35,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:35,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:35,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-08 05:05:35,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-08 05:05:35,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:35,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:35,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:05:35,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:05:35,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233884464] [2025-02-08 05:05:35,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233884464] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:05:35,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:05:35,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 05:05:35,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708793782] [2025-02-08 05:05:35,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:05:35,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 05:05:35,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:05:35,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 05:05:35,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:05:35,871 INFO L87 Difference]: Start difference. First operand 411 states and 588 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:05:36,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:05:36,012 INFO L93 Difference]: Finished difference Result 948 states and 1362 transitions. [2025-02-08 05:05:36,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 05:05:36,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2025-02-08 05:05:36,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:05:36,016 INFO L225 Difference]: With dead ends: 948 [2025-02-08 05:05:36,016 INFO L226 Difference]: Without dead ends: 539 [2025-02-08 05:05:36,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:05:36,017 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 134 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 05:05:36,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1077 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 05:05:36,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2025-02-08 05:05:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2025-02-08 05:05:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 521 states have (on average 1.4452975047984644) internal successors, (753), 530 states have internal predecessors, (753), 16 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:05:36,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 775 transitions. [2025-02-08 05:05:36,037 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 775 transitions. Word has length 152 [2025-02-08 05:05:36,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:05:36,037 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 775 transitions. [2025-02-08 05:05:36,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:05:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 775 transitions. [2025-02-08 05:05:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-08 05:05:36,039 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:36,039 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:36,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 05:05:36,039 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:36,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:36,039 INFO L85 PathProgramCache]: Analyzing trace with hash -28650758, now seen corresponding path program 1 times [2025-02-08 05:05:36,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:36,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653471651] [2025-02-08 05:05:36,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:36,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:36,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-08 05:05:36,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-08 05:05:36,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:36,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:05:36,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:05:36,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653471651] [2025-02-08 05:05:36,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653471651] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:05:36,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:05:36,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 05:05:36,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156977689] [2025-02-08 05:05:36,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:05:36,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 05:05:36,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:05:36,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 05:05:36,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 05:05:36,381 INFO L87 Difference]: Start difference. First operand 539 states and 775 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:05:36,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:05:36,527 INFO L93 Difference]: Finished difference Result 906 states and 1295 transitions. [2025-02-08 05:05:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 05:05:36,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 167 [2025-02-08 05:05:36,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:05:36,530 INFO L225 Difference]: With dead ends: 906 [2025-02-08 05:05:36,530 INFO L226 Difference]: Without dead ends: 497 [2025-02-08 05:05:36,531 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 [2025-02-08 05:05:36,531 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 30 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 05:05:36,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1334 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 05:05:36,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2025-02-08 05:05:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2025-02-08 05:05:36,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 479 states have (on average 1.4112734864300627) internal successors, (676), 488 states have internal predecessors, (676), 16 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:05:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 698 transitions. [2025-02-08 05:05:36,551 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 698 transitions. Word has length 167 [2025-02-08 05:05:36,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:05:36,552 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 698 transitions. [2025-02-08 05:05:36,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:05:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 698 transitions. [2025-02-08 05:05:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-08 05:05:36,553 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:36,553 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:36,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 05:05:36,554 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:36,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:36,554 INFO L85 PathProgramCache]: Analyzing trace with hash -316417645, now seen corresponding path program 1 times [2025-02-08 05:05:36,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:36,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696654215] [2025-02-08 05:05:36,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:36,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-08 05:05:36,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-08 05:05:36,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:36,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:36,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:05:36,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:05:36,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696654215] [2025-02-08 05:05:36,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696654215] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:05:36,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:05:36,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 05:05:36,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911387187] [2025-02-08 05:05:36,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:05:36,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 05:05:36,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:05:36,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 05:05:36,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:05:36,774 INFO L87 Difference]: Start difference. First operand 497 states and 698 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:05:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:05:36,922 INFO L93 Difference]: Finished difference Result 1008 states and 1403 transitions. [2025-02-08 05:05:36,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 05:05:36,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 167 [2025-02-08 05:05:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:05:36,925 INFO L225 Difference]: With dead ends: 1008 [2025-02-08 05:05:36,925 INFO L226 Difference]: Without dead ends: 641 [2025-02-08 05:05:36,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:05:36,928 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 242 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 05:05:36,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 928 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 05:05:36,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2025-02-08 05:05:36,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2025-02-08 05:05:36,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 620 states have (on average 1.3951612903225807) internal successors, (865), 629 states have internal predecessors, (865), 19 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 05:05:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 893 transitions. [2025-02-08 05:05:36,955 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 893 transitions. Word has length 167 [2025-02-08 05:05:36,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:05:36,956 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 893 transitions. [2025-02-08 05:05:36,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:05:36,956 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 893 transitions. [2025-02-08 05:05:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-02-08 05:05:36,959 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:36,959 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:36,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 05:05:36,959 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:36,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:36,961 INFO L85 PathProgramCache]: Analyzing trace with hash 490435711, now seen corresponding path program 1 times [2025-02-08 05:05:36,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:36,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562519721] [2025-02-08 05:05:36,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:36,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:37,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-02-08 05:05:37,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-02-08 05:05:37,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:37,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 05:05:37,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:05:37,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562519721] [2025-02-08 05:05:37,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562519721] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:05:37,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299598665] [2025-02-08 05:05:37,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:37,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:05:37,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:05:37,298 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 05:05:37,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 05:05:37,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-02-08 05:05:37,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-02-08 05:05:37,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:37,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:37,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 05:05:37,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 05:05:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 05:05:37,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 05:05:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 05:05:38,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299598665] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 05:05:38,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 05:05:38,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2025-02-08 05:05:38,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139759336] [2025-02-08 05:05:38,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 05:05:38,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 05:05:38,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:05:38,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 05:05:38,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 05:05:38,147 INFO L87 Difference]: Start difference. First operand 641 states and 893 transitions. Second operand has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 05:05:38,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:05:38,374 INFO L93 Difference]: Finished difference Result 1404 states and 1952 transitions. [2025-02-08 05:05:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 05:05:38,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 182 [2025-02-08 05:05:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:05:38,380 INFO L225 Difference]: With dead ends: 1404 [2025-02-08 05:05:38,380 INFO L226 Difference]: Without dead ends: 1379 [2025-02-08 05:05:38,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 05:05:38,381 INFO L435 NwaCegarLoop]: 505 mSDtfsCounter, 1749 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 05:05:38,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 1960 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 05:05:38,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2025-02-08 05:05:38,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1379. [2025-02-08 05:05:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1343 states have (on average 1.3827252419955325) internal successors, (1857), 1352 states have internal predecessors, (1857), 34 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-08 05:05:38,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1915 transitions. [2025-02-08 05:05:38,414 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1915 transitions. Word has length 182 [2025-02-08 05:05:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:05:38,415 INFO L471 AbstractCegarLoop]: Abstraction has 1379 states and 1915 transitions. [2025-02-08 05:05:38,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 05:05:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1915 transitions. [2025-02-08 05:05:38,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2025-02-08 05:05:38,439 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:38,439 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:38,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 05:05:38,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:05:38,640 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:38,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:38,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2104328629, now seen corresponding path program 1 times [2025-02-08 05:05:38,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:38,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808577611] [2025-02-08 05:05:38,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:38,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:38,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 614 statements into 1 equivalence classes. [2025-02-08 05:05:39,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 614 of 614 statements. [2025-02-08 05:05:39,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:39,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 05:05:39,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:05:39,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808577611] [2025-02-08 05:05:39,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808577611] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:05:39,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577326471] [2025-02-08 05:05:39,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:39,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:05:39,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:05:39,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 05:05:39,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 05:05:40,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 614 statements into 1 equivalence classes. [2025-02-08 05:05:40,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 614 of 614 statements. [2025-02-08 05:05:40,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:40,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:40,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 05:05:40,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 05:05:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 05:05:41,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 05:05:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 05:05:41,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577326471] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 05:05:41,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 05:05:41,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-02-08 05:05:41,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939532408] [2025-02-08 05:05:41,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 05:05:41,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 05:05:41,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:05:41,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 05:05:41,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2025-02-08 05:05:41,916 INFO L87 Difference]: Start difference. First operand 1379 states and 1915 transitions. Second operand has 12 states, 12 states have (on average 98.66666666666667) internal successors, (1184), 12 states have internal predecessors, (1184), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 05:05:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:05:42,548 INFO L93 Difference]: Finished difference Result 3432 states and 4775 transitions. [2025-02-08 05:05:42,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 05:05:42,549 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 98.66666666666667) internal successors, (1184), 12 states have internal predecessors, (1184), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 614 [2025-02-08 05:05:42,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:05:42,562 INFO L225 Difference]: With dead ends: 3432 [2025-02-08 05:05:42,562 INFO L226 Difference]: Without dead ends: 3407 [2025-02-08 05:05:42,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1233 GetRequests, 1223 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2025-02-08 05:05:42,564 INFO L435 NwaCegarLoop]: 544 mSDtfsCounter, 5354 mSDsluCounter, 4156 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5406 SdHoareTripleChecker+Valid, 4700 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 05:05:42,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5406 Valid, 4700 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 05:05:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2025-02-08 05:05:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 3407. [2025-02-08 05:05:42,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 3335 states have (on average 1.3808095952023989) internal successors, (4605), 3344 states have internal predecessors, (4605), 70 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-02-08 05:05:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 4735 transitions. [2025-02-08 05:05:42,646 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 4735 transitions. Word has length 614 [2025-02-08 05:05:42,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:05:42,647 INFO L471 AbstractCegarLoop]: Abstraction has 3407 states and 4735 transitions. [2025-02-08 05:05:42,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 98.66666666666667) internal successors, (1184), 12 states have internal predecessors, (1184), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 05:05:42,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 4735 transitions. [2025-02-08 05:05:42,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1479 [2025-02-08 05:05:42,698 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:42,699 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:42,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 05:05:42,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:05:42,903 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:42,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:42,907 INFO L85 PathProgramCache]: Analyzing trace with hash -118228509, now seen corresponding path program 2 times [2025-02-08 05:05:42,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:42,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143455096] [2025-02-08 05:05:42,908 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 05:05:42,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:43,369 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1478 statements into 2 equivalence classes.