./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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_OAT_test1-1.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 ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 08:43:46,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 08:43:46,408 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 08:43:46,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 08:43:46,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 08:43:46,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 08:43:46,448 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 08:43:46,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 08:43:46,449 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 08:43:46,450 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 08:43:46,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 08:43:46,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 08:43:46,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 08:43:46,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 08:43:46,451 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 08:43:46,451 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 08:43:46,451 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 08:43:46,451 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 08:43:46,452 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 08:43:46,452 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 08:43:46,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 08:43:46,452 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 08:43:46,452 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 08:43:46,452 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 08:43:46,453 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 08:43:46,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 08:43:46,453 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 08:43:46,453 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 08:43:46,453 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 08:43:46,453 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 08:43:46,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 08:43:46,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 08:43:46,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:43:46,454 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 08:43:46,454 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 08:43:46,455 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 08:43:46,455 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 08:43:46,455 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 08:43:46,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 08:43:46,455 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 08:43:46,455 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 08:43:46,455 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 08:43:46,455 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 08:43:46,455 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 -> ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 [2025-02-06 08:43:46,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 08:43:46,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 08:43:46,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 08:43:46,774 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 08:43:46,774 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 08:43:46,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2025-02-06 08:43:48,031 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/22a8c47eb/eeeb104c48a141c59c2441ea51da4d3d/FLAG5cd78ae60 [2025-02-06 08:43:48,343 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 08:43:48,344 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2025-02-06 08:43:48,368 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/22a8c47eb/eeeb104c48a141c59c2441ea51da4d3d/FLAG5cd78ae60 [2025-02-06 08:43:48,599 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/22a8c47eb/eeeb104c48a141c59c2441ea51da4d3d [2025-02-06 08:43:48,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 08:43:48,603 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 08:43:48,605 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 08:43:48,605 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 08:43:48,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 08:43:48,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:43:48" (1/1) ... [2025-02-06 08:43:48,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63604a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:48, skipping insertion in model container [2025-02-06 08:43:48,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:43:48" (1/1) ... [2025-02-06 08:43:48,644 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 08:43:49,018 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_OAT_test1-1.i[33021,33034] [2025-02-06 08:43:49,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:43:49,114 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 08:43:49,159 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_OAT_test1-1.i[33021,33034] [2025-02-06 08:43:49,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:43:49,272 INFO L204 MainTranslator]: Completed translation [2025-02-06 08:43:49,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:49 WrapperNode [2025-02-06 08:43:49,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 08:43:49,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 08:43:49,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 08:43:49,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 08:43:49,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:49" (1/1) ... [2025-02-06 08:43:49,312 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:49" (1/1) ... [2025-02-06 08:43:49,370 INFO L138 Inliner]: procedures = 176, calls = 179, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 812 [2025-02-06 08:43:49,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 08:43:49,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 08:43:49,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 08:43:49,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 08:43:49,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:49" (1/1) ... [2025-02-06 08:43:49,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:49" (1/1) ... [2025-02-06 08:43:49,395 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:49" (1/1) ... [2025-02-06 08:43:49,458 INFO L175 MemorySlicer]: Split 158 memory accesses to 2 slices as follows [2, 156]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 42 writes are split as follows [0, 42]. [2025-02-06 08:43:49,458 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:49" (1/1) ... [2025-02-06 08:43:49,459 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:49" (1/1) ... [2025-02-06 08:43:49,490 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:49" (1/1) ... [2025-02-06 08:43:49,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:49" (1/1) ... [2025-02-06 08:43:49,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:49" (1/1) ... [2025-02-06 08:43:49,506 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:49" (1/1) ... [2025-02-06 08:43:49,516 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 08:43:49,519 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 08:43:49,520 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 08:43:49,520 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 08:43:49,521 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:49" (1/1) ... [2025-02-06 08:43:49,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:43:49,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:43:49,554 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) [2025-02-06 08:43:49,563 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 [2025-02-06 08:43:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 08:43:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 08:43:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 08:43:49,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 08:43:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 08:43:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 08:43:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 08:43:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 08:43:49,584 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 08:43:49,584 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 08:43:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 08:43:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 08:43:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 08:43:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 08:43:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 08:43:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 08:43:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 08:43:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 08:43:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 08:43:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 08:43:49,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 08:43:49,773 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 08:43:49,775 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 08:43:50,785 INFO L? ?]: Removed 208 outVars from TransFormulas that were not future-live. [2025-02-06 08:43:50,785 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 08:43:50,828 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 08:43:50,833 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-06 08:43:50,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:43:50 BoogieIcfgContainer [2025-02-06 08:43:50,833 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 08:43:50,836 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 08:43:50,839 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 08:43:50,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 08:43:50,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 08:43:48" (1/3) ... [2025-02-06 08:43:50,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b2b26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:43:50, skipping insertion in model container [2025-02-06 08:43:50,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:43:49" (2/3) ... [2025-02-06 08:43:50,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b2b26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:43:50, skipping insertion in model container [2025-02-06 08:43:50,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:43:50" (3/3) ... [2025-02-06 08:43:50,847 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-1.i [2025-02-06 08:43:50,862 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 08:43:50,864 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test1-1.i that has 4 procedures, 234 locations, 1 initial locations, 20 loop locations, and 1 error locations. [2025-02-06 08:43:50,923 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 08:43:50,935 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;@80b1492, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 08:43:50,937 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 08:43:50,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 230 states, 213 states have (on average 1.6103286384976525) internal successors, (343), 224 states have internal predecessors, (343), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-06 08:43:50,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 08:43:50,950 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:43:50,951 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:43:50,951 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:43:50,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:43:50,956 INFO L85 PathProgramCache]: Analyzing trace with hash -765919184, now seen corresponding path program 1 times [2025-02-06 08:43:50,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:43:50,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123137674] [2025-02-06 08:43:50,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:43:50,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:43:51,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 08:43:51,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 08:43:51,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:43:51,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:43:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:43:51,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:43:51,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123137674] [2025-02-06 08:43:51,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123137674] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:43:51,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:43:51,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:43:51,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911596732] [2025-02-06 08:43:51,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:43:51,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:43:51,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:43:51,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:43:51,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:43:51,230 INFO L87 Difference]: Start difference. First operand has 230 states, 213 states have (on average 1.6103286384976525) internal successors, (343), 224 states have internal predecessors, (343), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2025-02-06 08:43:51,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:43:51,417 INFO L93 Difference]: Finished difference Result 650 states and 1057 transitions. [2025-02-06 08:43:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:43:51,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2025-02-06 08:43:51,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:43:51,437 INFO L225 Difference]: With dead ends: 650 [2025-02-06 08:43:51,437 INFO L226 Difference]: Without dead ends: 419 [2025-02-06 08:43:51,441 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 [2025-02-06 08:43:51,443 INFO L435 NwaCegarLoop]: 312 mSDtfsCounter, 272 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:43:51,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 621 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:43:51,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2025-02-06 08:43:51,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 228. [2025-02-06 08:43:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 212 states have (on average 1.4575471698113207) internal successors, (309), 222 states have internal predecessors, (309), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-06 08:43:51,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 335 transitions. [2025-02-06 08:43:51,506 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 335 transitions. Word has length 9 [2025-02-06 08:43:51,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:43:51,506 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 335 transitions. [2025-02-06 08:43:51,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2025-02-06 08:43:51,507 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 335 transitions. [2025-02-06 08:43:51,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-06 08:43:51,512 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:43:51,512 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] [2025-02-06 08:43:51,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 08:43:51,513 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:43:51,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:43:51,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1713350602, now seen corresponding path program 1 times [2025-02-06 08:43:51,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:43:51,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44610598] [2025-02-06 08:43:51,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:43:51,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:43:51,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-06 08:43:51,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-06 08:43:51,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:43:51,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:43:52,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:43:52,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:43:52,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44610598] [2025-02-06 08:43:52,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44610598] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:43:52,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:43:52,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:43:52,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69508272] [2025-02-06 08:43:52,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:43:52,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:43:52,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:43:52,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:43:52,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:43:52,023 INFO L87 Difference]: Start difference. First operand 228 states and 335 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2025-02-06 08:43:52,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:43:52,178 INFO L93 Difference]: Finished difference Result 456 states and 670 transitions. [2025-02-06 08:43:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:43:52,180 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), 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 83 [2025-02-06 08:43:52,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:43:52,182 INFO L225 Difference]: With dead ends: 456 [2025-02-06 08:43:52,183 INFO L226 Difference]: Without dead ends: 231 [2025-02-06 08:43:52,185 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 [2025-02-06 08:43:52,186 INFO L435 NwaCegarLoop]: 285 mSDtfsCounter, 105 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:43:52,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 771 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:43:52,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-02-06 08:43:52,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2025-02-06 08:43:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 212 states have (on average 1.4245283018867925) internal successors, (302), 222 states have internal predecessors, (302), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-06 08:43:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 328 transitions. [2025-02-06 08:43:52,209 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 328 transitions. Word has length 83 [2025-02-06 08:43:52,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:43:52,209 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 328 transitions. [2025-02-06 08:43:52,209 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), 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) [2025-02-06 08:43:52,209 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 328 transitions. [2025-02-06 08:43:52,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-06 08:43:52,211 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:43:52,212 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] [2025-02-06 08:43:52,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 08:43:52,212 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:43:52,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:43:52,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1425583715, now seen corresponding path program 1 times [2025-02-06 08:43:52,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:43:52,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927893613] [2025-02-06 08:43:52,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:43:52,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:43:52,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-06 08:43:52,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-06 08:43:52,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:43:52,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:43:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:43:52,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:43:52,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927893613] [2025-02-06 08:43:52,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927893613] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:43:52,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:43:52,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:43:52,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976774661] [2025-02-06 08:43:52,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:43:52,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:43:52,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:43:52,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:43:52,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:43:52,467 INFO L87 Difference]: Start difference. First operand 228 states and 328 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-02-06 08:43:52,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:43:52,603 INFO L93 Difference]: Finished difference Result 581 states and 841 transitions. [2025-02-06 08:43:52,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:43:52,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 83 [2025-02-06 08:43:52,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:43:52,607 INFO L225 Difference]: With dead ends: 581 [2025-02-06 08:43:52,607 INFO L226 Difference]: Without dead ends: 356 [2025-02-06 08:43:52,608 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 [2025-02-06 08:43:52,608 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 134 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:43:52,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 600 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:43:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2025-02-06 08:43:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2025-02-06 08:43:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 340 states have (on average 1.438235294117647) internal successors, (489), 350 states have internal predecessors, (489), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-06 08:43:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 515 transitions. [2025-02-06 08:43:52,635 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 515 transitions. Word has length 83 [2025-02-06 08:43:52,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:43:52,635 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 515 transitions. [2025-02-06 08:43:52,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-02-06 08:43:52,635 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 515 transitions. [2025-02-06 08:43:52,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-06 08:43:52,641 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:43:52,641 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] [2025-02-06 08:43:52,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 08:43:52,642 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:43:52,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:43:52,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1476013556, now seen corresponding path program 1 times [2025-02-06 08:43:52,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:43:52,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70764565] [2025-02-06 08:43:52,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:43:52,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:43:52,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-06 08:43:52,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-06 08:43:52,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:43:52,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:43:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:43:52,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:43:52,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70764565] [2025-02-06 08:43:52,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70764565] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:43:52,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189563892] [2025-02-06 08:43:52,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:43:52,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:43:52,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:43:52,979 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) [2025-02-06 08:43:52,981 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 [2025-02-06 08:43:53,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-06 08:43:53,266 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-06 08:43:53,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:43:53,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:43:53,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 08:43:53,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:43:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:43:53,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:43:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:43:53,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189563892] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:43:53,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:43:53,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-06 08:43:53,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546727916] [2025-02-06 08:43:53,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:43:53,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 08:43:53,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:43:53,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 08:43:53,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:43:53,596 INFO L87 Difference]: Start difference. First operand 356 states and 515 transitions. Second operand has 7 states, 7 states have (on average 35.857142857142854) internal successors, (251), 7 states have internal predecessors, (251), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 08:43:53,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:43:53,833 INFO L93 Difference]: Finished difference Result 831 states and 1192 transitions. [2025-02-06 08:43:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:43:53,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.857142857142854) internal successors, (251), 7 states have internal predecessors, (251), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 98 [2025-02-06 08:43:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:43:53,840 INFO L225 Difference]: With dead ends: 831 [2025-02-06 08:43:53,841 INFO L226 Difference]: Without dead ends: 802 [2025-02-06 08:43:53,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:43:53,845 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1231 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:43:53,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 1417 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:43:53,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2025-02-06 08:43:53,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2025-02-06 08:43:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 777 states have (on average 1.4118404118404118) internal successors, (1097), 787 states have internal predecessors, (1097), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-06 08:43:53,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1141 transitions. [2025-02-06 08:43:53,891 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1141 transitions. Word has length 98 [2025-02-06 08:43:53,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:43:53,892 INFO L471 AbstractCegarLoop]: Abstraction has 802 states and 1141 transitions. [2025-02-06 08:43:53,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.857142857142854) internal successors, (251), 7 states have internal predecessors, (251), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 08:43:53,892 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1141 transitions. [2025-02-06 08:43:53,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2025-02-06 08:43:53,900 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:43:53,902 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, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:43:53,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 08:43:54,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:43:54,104 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:43:54,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:43:54,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2051493989, now seen corresponding path program 1 times [2025-02-06 08:43:54,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:43:54,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124547867] [2025-02-06 08:43:54,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:43:54,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:43:54,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-02-06 08:43:54,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-02-06 08:43:54,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:43:54,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:43:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:43:55,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:43:55,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124547867] [2025-02-06 08:43:55,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124547867] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:43:55,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325651810] [2025-02-06 08:43:55,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:43:55,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:43:55,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:43:55,253 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) [2025-02-06 08:43:55,256 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 [2025-02-06 08:43:55,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-02-06 08:43:55,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-02-06 08:43:55,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:43:55,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:43:55,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 08:43:55,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:43:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:43:56,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:43:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:43:56,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325651810] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:43:56,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:43:56,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-06 08:43:56,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98378538] [2025-02-06 08:43:56,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:43:56,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 08:43:56,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:43:56,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 08:43:56,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-06 08:43:56,831 INFO L87 Difference]: Start difference. First operand 802 states and 1141 transitions. Second operand has 13 states, 13 states have (on average 53.46153846153846) internal successors, (695), 13 states have internal predecessors, (695), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 08:43:57,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:43:57,399 INFO L93 Difference]: Finished difference Result 1983 states and 2827 transitions. [2025-02-06 08:43:57,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 08:43:57,400 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 53.46153846153846) internal successors, (695), 13 states have internal predecessors, (695), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 320 [2025-02-06 08:43:57,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:43:57,410 INFO L225 Difference]: With dead ends: 1983 [2025-02-06 08:43:57,411 INFO L226 Difference]: Without dead ends: 1954 [2025-02-06 08:43:57,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 634 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-06 08:43:57,412 INFO L435 NwaCegarLoop]: 419 mSDtfsCounter, 5048 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 08:43:57,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5074 Valid, 3167 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 08:43:57,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2025-02-06 08:43:57,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1954. [2025-02-06 08:43:57,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1911 states have (on average 1.4092098377812663) internal successors, (2693), 1921 states have internal predecessors, (2693), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2025-02-06 08:43:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2773 transitions. [2025-02-06 08:43:57,491 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2773 transitions. Word has length 320 [2025-02-06 08:43:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:43:57,491 INFO L471 AbstractCegarLoop]: Abstraction has 1954 states and 2773 transitions. [2025-02-06 08:43:57,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 53.46153846153846) internal successors, (695), 13 states have internal predecessors, (695), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 08:43:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2773 transitions. [2025-02-06 08:43:57,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2025-02-06 08:43:57,508 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:43:57,508 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, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:43:57,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 08:43:57,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:43:57,709 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:43:57,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:43:57,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1526485033, now seen corresponding path program 2 times [2025-02-06 08:43:57,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:43:57,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355154777] [2025-02-06 08:43:57,710 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:43:57,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:43:58,011 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 764 statements into 2 equivalence classes. [2025-02-06 08:45:05,864 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 764 of 764 statements. [2025-02-06 08:45:05,865 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 08:45:05,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:45:07,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 487 proven. 3 refuted. 0 times theorem prover too weak. 2836 trivial. 0 not checked. [2025-02-06 08:45:07,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:45:07,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355154777] [2025-02-06 08:45:07,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355154777] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:45:07,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593774958] [2025-02-06 08:45:07,283 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:45:07,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:45:07,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:45:07,288 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:45:07,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 08:45:07,909 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 764 statements into 2 equivalence classes.