./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_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_FNV_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 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 08:35:51,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 08:35:51,888 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 08:35:51,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 08:35:51,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 08:35:51,909 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 08:35:51,910 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 08:35:51,911 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 08:35:51,911 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 08:35:51,911 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 08:35:51,912 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 08:35:51,912 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 08:35:51,912 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 08:35:51,912 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 08:35:51,912 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 08:35:51,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 08:35:51,912 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 08:35:51,912 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 08:35:51,913 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:35:51,913 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 08:35:51,913 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 08:35:51,914 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 08:35:51,914 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 08:35:51,914 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 08:35:51,914 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 -> 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f [2025-02-06 08:35:52,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 08:35:52,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 08:35:52,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 08:35:52,158 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 08:35:52,159 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 08:35:52,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2025-02-06 08:35:53,338 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b2886bf14/e31b22918d2546909ea0e6b76e421f7a/FLAG52a43c25c [2025-02-06 08:35:53,686 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 08:35:53,687 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2025-02-06 08:35:53,702 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b2886bf14/e31b22918d2546909ea0e6b76e421f7a/FLAG52a43c25c [2025-02-06 08:35:53,905 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b2886bf14/e31b22918d2546909ea0e6b76e421f7a [2025-02-06 08:35:53,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 08:35:53,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 08:35:53,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 08:35:53,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 08:35:53,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 08:35:53,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:35:53" (1/1) ... [2025-02-06 08:35:53,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2abb9656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:53, skipping insertion in model container [2025-02-06 08:35:53,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:35:53" (1/1) ... [2025-02-06 08:35:53,932 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 08:35:54,166 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_FNV_test1-1.i[33021,33034] [2025-02-06 08:35:54,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:35:54,227 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 08:35:54,257 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_FNV_test1-1.i[33021,33034] [2025-02-06 08:35:54,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:35:54,330 INFO L204 MainTranslator]: Completed translation [2025-02-06 08:35:54,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:54 WrapperNode [2025-02-06 08:35:54,331 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 08:35:54,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 08:35:54,331 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 08:35:54,332 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 08:35:54,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:54" (1/1) ... [2025-02-06 08:35:54,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:54" (1/1) ... [2025-02-06 08:35:54,379 INFO L138 Inliner]: procedures = 176, calls = 179, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 812 [2025-02-06 08:35:54,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 08:35:54,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 08:35:54,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 08:35:54,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 08:35:54,386 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:54" (1/1) ... [2025-02-06 08:35:54,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:54" (1/1) ... [2025-02-06 08:35:54,392 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:54" (1/1) ... [2025-02-06 08:35:54,421 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 08:35:54,421 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:54" (1/1) ... [2025-02-06 08:35:54,421 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:54" (1/1) ... [2025-02-06 08:35:54,448 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:54" (1/1) ... [2025-02-06 08:35:54,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:54" (1/1) ... [2025-02-06 08:35:54,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:54" (1/1) ... [2025-02-06 08:35:54,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:54" (1/1) ... [2025-02-06 08:35:54,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 08:35:54,471 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 08:35:54,471 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 08:35:54,471 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 08:35:54,472 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:54" (1/1) ... [2025-02-06 08:35:54,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:35:54,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:35:54,500 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 08:35:54,506 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 08:35:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 08:35:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 08:35:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 08:35:54,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 08:35:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 08:35:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 08:35:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 08:35:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 08:35:54,530 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 08:35:54,530 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 08:35:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 08:35:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 08:35:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 08:35:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 08:35:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 08:35:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 08:35:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 08:35:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 08:35:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 08:35:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 08:35:54,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 08:35:54,648 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 08:35:54,649 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 08:35:55,350 INFO L? ?]: Removed 208 outVars from TransFormulas that were not future-live. [2025-02-06 08:35:55,350 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 08:35:55,387 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 08:35:55,387 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-06 08:35:55,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:35:55 BoogieIcfgContainer [2025-02-06 08:35:55,388 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 08:35:55,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 08:35:55,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 08:35:55,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 08:35:55,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 08:35:53" (1/3) ... [2025-02-06 08:35:55,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291f7b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:35:55, skipping insertion in model container [2025-02-06 08:35:55,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:35:54" (2/3) ... [2025-02-06 08:35:55,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291f7b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:35:55, skipping insertion in model container [2025-02-06 08:35:55,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:35:55" (3/3) ... [2025-02-06 08:35:55,399 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test1-1.i [2025-02-06 08:35:55,410 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 08:35:55,412 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_test1-1.i that has 4 procedures, 234 locations, 1 initial locations, 20 loop locations, and 1 error locations. [2025-02-06 08:35:55,452 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 08:35:55,460 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;@728b5869, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 08:35:55,460 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 08:35:55,463 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 08:35:55,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 08:35:55,466 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:55,466 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:35:55,467 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:55,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:55,470 INFO L85 PathProgramCache]: Analyzing trace with hash -765919184, now seen corresponding path program 1 times [2025-02-06 08:35:55,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:55,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804369940] [2025-02-06 08:35:55,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:55,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:55,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 08:35:55,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 08:35:55,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:55,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:55,642 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 08:35:55,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:55,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804369940] [2025-02-06 08:35:55,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804369940] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:35:55,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:35:55,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:35:55,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523583081] [2025-02-06 08:35:55,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:35:55,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:35:55,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:55,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:35:55,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:35:55,664 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 08:35:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:35:55,783 INFO L93 Difference]: Finished difference Result 650 states and 1057 transitions. [2025-02-06 08:35:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:35:55,786 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 08:35:55,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:35:55,797 INFO L225 Difference]: With dead ends: 650 [2025-02-06 08:35:55,797 INFO L226 Difference]: Without dead ends: 419 [2025-02-06 08:35:55,804 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 08:35:55,806 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 08:35:55,807 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 08:35:55,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2025-02-06 08:35:55,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 228. [2025-02-06 08:35:55,843 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 08:35:55,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 335 transitions. [2025-02-06 08:35:55,853 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 335 transitions. Word has length 9 [2025-02-06 08:35:55,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:35:55,853 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 335 transitions. [2025-02-06 08:35:55,853 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 08:35:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 335 transitions. [2025-02-06 08:35:55,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-06 08:35:55,856 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:55,856 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 08:35:55,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 08:35:55,856 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:55,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:55,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1713350602, now seen corresponding path program 1 times [2025-02-06 08:35:55,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:55,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772135409] [2025-02-06 08:35:55,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:55,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:55,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-06 08:35:55,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-06 08:35:55,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:55,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:56,189 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 08:35:56,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:56,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772135409] [2025-02-06 08:35:56,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772135409] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:35:56,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:35:56,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:35:56,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984655140] [2025-02-06 08:35:56,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:35:56,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:35:56,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:56,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:35:56,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:35:56,193 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 08:35:56,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:35:56,312 INFO L93 Difference]: Finished difference Result 456 states and 670 transitions. [2025-02-06 08:35:56,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:35:56,313 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 08:35:56,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:35:56,314 INFO L225 Difference]: With dead ends: 456 [2025-02-06 08:35:56,315 INFO L226 Difference]: Without dead ends: 231 [2025-02-06 08:35:56,316 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 08:35:56,317 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 08:35:56,317 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 08:35:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-02-06 08:35:56,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2025-02-06 08:35:56,329 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 08:35:56,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 328 transitions. [2025-02-06 08:35:56,333 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 328 transitions. Word has length 83 [2025-02-06 08:35:56,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:35:56,333 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 328 transitions. [2025-02-06 08:35:56,333 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 08:35:56,333 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 328 transitions. [2025-02-06 08:35:56,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-06 08:35:56,336 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:56,336 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 08:35:56,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 08:35:56,336 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:56,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:56,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1425583715, now seen corresponding path program 1 times [2025-02-06 08:35:56,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:56,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763323413] [2025-02-06 08:35:56,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:56,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:56,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-06 08:35:56,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-06 08:35:56,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:56,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:56,520 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 08:35:56,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:56,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763323413] [2025-02-06 08:35:56,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763323413] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:35:56,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:35:56,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:35:56,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224840069] [2025-02-06 08:35:56,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:35:56,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:35:56,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:56,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:35:56,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:35:56,522 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 08:35:56,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:35:56,611 INFO L93 Difference]: Finished difference Result 581 states and 841 transitions. [2025-02-06 08:35:56,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:35:56,611 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 08:35:56,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:35:56,613 INFO L225 Difference]: With dead ends: 581 [2025-02-06 08:35:56,613 INFO L226 Difference]: Without dead ends: 356 [2025-02-06 08:35:56,614 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 08:35:56,614 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 08:35:56,614 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 08:35:56,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2025-02-06 08:35:56,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2025-02-06 08:35:56,625 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 08:35:56,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 515 transitions. [2025-02-06 08:35:56,626 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 515 transitions. Word has length 83 [2025-02-06 08:35:56,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:35:56,626 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 515 transitions. [2025-02-06 08:35:56,627 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 08:35:56,627 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 515 transitions. [2025-02-06 08:35:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-06 08:35:56,628 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:56,629 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 08:35:56,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 08:35:56,629 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:56,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:56,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1476013556, now seen corresponding path program 1 times [2025-02-06 08:35:56,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:56,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661865523] [2025-02-06 08:35:56,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:56,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:56,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-06 08:35:56,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-06 08:35:56,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:56,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:56,876 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 08:35:56,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:56,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661865523] [2025-02-06 08:35:56,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661865523] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:35:56,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513587722] [2025-02-06 08:35:56,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:56,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:35:56,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:35:56,884 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 08:35:56,885 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 08:35:57,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-06 08:35:57,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-06 08:35:57,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:57,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:57,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 08:35:57,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:35:57,223 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 08:35:57,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:35:57,357 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 08:35:57,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513587722] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:35:57,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:35:57,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-06 08:35:57,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540032926] [2025-02-06 08:35:57,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:35:57,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 08:35:57,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:57,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 08:35:57,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:35:57,361 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 08:35:57,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:35:57,539 INFO L93 Difference]: Finished difference Result 831 states and 1192 transitions. [2025-02-06 08:35:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:35:57,539 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 08:35:57,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:35:57,544 INFO L225 Difference]: With dead ends: 831 [2025-02-06 08:35:57,545 INFO L226 Difference]: Without dead ends: 802 [2025-02-06 08:35:57,545 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 08:35:57,545 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, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:35:57,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 1417 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:35:57,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2025-02-06 08:35:57,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2025-02-06 08:35:57,567 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 08:35:57,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1141 transitions. [2025-02-06 08:35:57,572 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1141 transitions. Word has length 98 [2025-02-06 08:35:57,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:35:57,573 INFO L471 AbstractCegarLoop]: Abstraction has 802 states and 1141 transitions. [2025-02-06 08:35:57,573 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 08:35:57,573 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1141 transitions. [2025-02-06 08:35:57,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2025-02-06 08:35:57,583 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:57,583 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 08:35:57,593 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 08:35:57,784 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 08:35:57,785 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:57,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:57,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2051493989, now seen corresponding path program 1 times [2025-02-06 08:35:57,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:57,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115411313] [2025-02-06 08:35:57,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:57,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:57,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-02-06 08:35:58,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-02-06 08:35:58,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:58,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:58,527 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 08:35:58,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:58,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115411313] [2025-02-06 08:35:58,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115411313] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:35:58,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692582095] [2025-02-06 08:35:58,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:58,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:35:58,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:35:58,533 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 08:35:58,534 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 08:35:58,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-02-06 08:35:59,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-02-06 08:35:59,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:59,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:59,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 08:35:59,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:35:59,358 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 08:35:59,358 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:35:59,685 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 08:35:59,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692582095] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:35:59,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:35:59,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-06 08:35:59,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675172191] [2025-02-06 08:35:59,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:35:59,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 08:35:59,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:59,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 08:35:59,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-06 08:35:59,688 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 08:36:00,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:36:00,077 INFO L93 Difference]: Finished difference Result 1983 states and 2827 transitions. [2025-02-06 08:36:00,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 08:36:00,078 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 08:36:00,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:36:00,085 INFO L225 Difference]: With dead ends: 1983 [2025-02-06 08:36:00,085 INFO L226 Difference]: Without dead ends: 1954 [2025-02-06 08:36:00,085 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 08:36:00,086 INFO L435 NwaCegarLoop]: 419 mSDtfsCounter, 5048 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 08:36:00,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5074 Valid, 3167 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 08:36:00,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2025-02-06 08:36:00,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1954. [2025-02-06 08:36:00,117 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 08:36:00,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2773 transitions. [2025-02-06 08:36:00,123 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2773 transitions. Word has length 320 [2025-02-06 08:36:00,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:36:00,124 INFO L471 AbstractCegarLoop]: Abstraction has 1954 states and 2773 transitions. [2025-02-06 08:36:00,124 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 08:36:00,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2773 transitions. [2025-02-06 08:36:00,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2025-02-06 08:36:00,134 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:36:00,134 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 08:36:00,147 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 08:36:00,338 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 08:36:00,338 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:36:00,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:36:00,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1526485033, now seen corresponding path program 2 times [2025-02-06 08:36:00,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:36:00,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704804760] [2025-02-06 08:36:00,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:36:00,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:36:00,563 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 764 statements into 2 equivalence classes. [2025-02-06 08:37:06,871 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 764 of 764 statements. [2025-02-06 08:37:06,871 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 08:37:06,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:37:07,816 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 08:37:07,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:37:07,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704804760] [2025-02-06 08:37:07,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704804760] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:37:07,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471201714] [2025-02-06 08:37:07,818 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:37:07,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:37:07,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:37:07,820 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 08:37:07,822 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 08:37:08,281 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 764 statements into 2 equivalence classes. [2025-02-06 08:37:27,583 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 764 of 764 statements. [2025-02-06 08:37:27,584 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 08:37:27,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:37:27,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 3849 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-06 08:37:27,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:37:27,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2025-02-06 08:37:28,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 08:37:28,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2025-02-06 08:37:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 867 proven. 31 refuted. 0 times theorem prover too weak. 2428 trivial. 0 not checked. [2025-02-06 08:37:28,453 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:37:29,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-02-06 08:37:30,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471201714] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:37:30,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 08:37:30,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13] total 15 [2025-02-06 08:37:30,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439076727] [2025-02-06 08:37:30,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 08:37:30,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 08:37:30,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:37:30,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 08:37:30,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2025-02-06 08:37:30,210 INFO L87 Difference]: Start difference. First operand 1954 states and 2773 transitions. Second operand has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4)