./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.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 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 05:05:26,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 05:05:26,439 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 05:05:26,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 05:05:26,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 05:05:26,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 05:05:26,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 05:05:26,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 05:05:26,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 05:05:26,471 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 05:05:26,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 05:05:26,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 05:05:26,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 05:05:26,475 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 05:05:26,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 05:05:26,476 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 05:05:26,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 05:05:26,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 05:05:26,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 05:05:26,477 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 05:05:26,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 05:05:26,477 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 05:05:26,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 05:05:26,477 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 05:05:26,477 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 05:05:26,477 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 05:05:26,477 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 05:05:26,477 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 -> 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 [2025-02-08 05:05:26,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 05:05:26,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 05:05:26,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 05:05:26,700 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 05:05:26,700 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 05:05:26,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2025-02-08 05:05:27,878 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8b3aa1da5/a58449d6090142a4aa3ffb615d69f599/FLAGd7721b4bd [2025-02-08 05:05:28,181 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 05:05:28,183 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2025-02-08 05:05:28,195 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8b3aa1da5/a58449d6090142a4aa3ffb615d69f599/FLAGd7721b4bd [2025-02-08 05:05:28,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8b3aa1da5/a58449d6090142a4aa3ffb615d69f599 [2025-02-08 05:05:28,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 05:05:28,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 05:05:28,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 05:05:28,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 05:05:28,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 05:05:28,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 05:05:28" (1/1) ... [2025-02-08 05:05:28,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b2070e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28, skipping insertion in model container [2025-02-08 05:05:28,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 05:05:28" (1/1) ... [2025-02-08 05:05:28,251 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 05:05:28,484 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i[33021,33034] [2025-02-08 05:05:28,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 05:05:28,607 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 05:05:28,644 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i[33021,33034] [2025-02-08 05:05:28,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 05:05:28,762 INFO L204 MainTranslator]: Completed translation [2025-02-08 05:05:28,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28 WrapperNode [2025-02-08 05:05:28,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 05:05:28,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 05:05:28,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 05:05:28,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 05:05:28,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28" (1/1) ... [2025-02-08 05:05:28,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28" (1/1) ... [2025-02-08 05:05:28,882 INFO L138 Inliner]: procedures = 176, calls = 386, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1699 [2025-02-08 05:05:28,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 05:05:28,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 05:05:28,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 05:05:28,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 05:05:28,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28" (1/1) ... [2025-02-08 05:05:28,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28" (1/1) ... [2025-02-08 05:05:28,905 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28" (1/1) ... [2025-02-08 05:05:29,004 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [2, 355]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 90 writes are split as follows [0, 90]. [2025-02-08 05:05:29,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28" (1/1) ... [2025-02-08 05:05:29,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28" (1/1) ... [2025-02-08 05:05:29,053 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28" (1/1) ... [2025-02-08 05:05:29,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28" (1/1) ... [2025-02-08 05:05:29,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28" (1/1) ... [2025-02-08 05:05:29,073 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28" (1/1) ... [2025-02-08 05:05:29,085 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 05:05:29,085 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 05:05:29,086 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 05:05:29,086 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 05:05:29,086 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28" (1/1) ... [2025-02-08 05:05:29,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 05:05:29,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:05:29,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 05:05:29,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 05:05:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 05:05:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 05:05:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 05:05:29,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 05:05:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 05:05:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 05:05:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 05:05:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 05:05:29,138 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 05:05:29,139 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 05:05:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 05:05:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 05:05:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 05:05:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 05:05:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 05:05:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 05:05:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 05:05:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 05:05:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 05:05:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 05:05:29,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 05:05:29,340 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 05:05:29,342 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 05:05:30,885 INFO L? ?]: Removed 408 outVars from TransFormulas that were not future-live. [2025-02-08 05:05:30,885 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 05:05:30,933 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 05:05:30,937 INFO L337 CfgBuilder]: Removed 2 assume(true) statements. [2025-02-08 05:05:30,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 05:05:30 BoogieIcfgContainer [2025-02-08 05:05:30,938 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 05:05:30,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 05:05:30,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 05:05:30,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 05:05:30,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 05:05:28" (1/3) ... [2025-02-08 05:05:30,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96e265b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 05:05:30, skipping insertion in model container [2025-02-08 05:05:30,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:05:28" (2/3) ... [2025-02-08 05:05:30,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96e265b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 05:05:30, skipping insertion in model container [2025-02-08 05:05:30,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 05:05:30" (3/3) ... [2025-02-08 05:05:30,946 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-2.i [2025-02-08 05:05:30,958 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 05:05:30,960 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test4-2.i that has 4 procedures, 452 locations, 1 initial locations, 41 loop locations, and 1 error locations. [2025-02-08 05:05:31,010 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 05:05:31,021 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;@2b0f16b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 05:05:31,022 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 05:05:31,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 448 states, 427 states have (on average 1.620608899297424) internal successors, (692), 438 states have internal predecessors, (692), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-08 05:05:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 05:05:31,032 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:31,032 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:31,033 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:31,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:31,038 INFO L85 PathProgramCache]: Analyzing trace with hash -31106761, now seen corresponding path program 1 times [2025-02-08 05:05:31,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:31,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480855736] [2025-02-08 05:05:31,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:31,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:31,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 05:05:31,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 05:05:31,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:31,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:05:31,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:05:31,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480855736] [2025-02-08 05:05:31,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480855736] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:05:31,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:05:31,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 05:05:31,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385880567] [2025-02-08 05:05:31,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:05:31,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 05:05:31,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:05:31,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 05:05:31,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:05:31,238 INFO L87 Difference]: Start difference. First operand has 448 states, 427 states have (on average 1.620608899297424) internal successors, (692), 438 states have internal predecessors, (692), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:05:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:05:31,445 INFO L93 Difference]: Finished difference Result 1275 states and 2073 transitions. [2025-02-08 05:05:31,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 05:05:31,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-08 05:05:31,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:05:31,464 INFO L225 Difference]: With dead ends: 1275 [2025-02-08 05:05:31,468 INFO L226 Difference]: Without dead ends: 790 [2025-02-08 05:05:31,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:05:31,476 INFO L435 NwaCegarLoop]: 649 mSDtfsCounter, 541 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 05:05:31,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1253 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 05:05:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2025-02-08 05:05:31,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 411. [2025-02-08 05:05:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 393 states have (on average 1.4580152671755726) internal successors, (573), 402 states have internal predecessors, (573), 16 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:05:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 595 transitions. [2025-02-08 05:05:31,543 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 595 transitions. Word has length 8 [2025-02-08 05:05:31,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:05:31,543 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 595 transitions. [2025-02-08 05:05:31,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:05:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 595 transitions. [2025-02-08 05:05:31,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-08 05:05:31,550 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:31,550 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:31,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 05:05:31,551 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:31,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash -28097145, now seen corresponding path program 1 times [2025-02-08 05:05:31,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:31,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139783604] [2025-02-08 05:05:31,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:31,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:31,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-08 05:05:31,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-08 05:05:31,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:31,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:05:32,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:05:32,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139783604] [2025-02-08 05:05:32,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139783604] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:05:32,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:05:32,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 05:05:32,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283688483] [2025-02-08 05:05:32,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:05:32,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 05:05:32,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:05:32,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 05:05:32,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 05:05:32,193 INFO L87 Difference]: Start difference. First operand 411 states and 595 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:05:32,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:05:32,388 INFO L93 Difference]: Finished difference Result 823 states and 1191 transitions. [2025-02-08 05:05:32,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 05:05:32,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2025-02-08 05:05:32,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:05:32,391 INFO L225 Difference]: With dead ends: 823 [2025-02-08 05:05:32,391 INFO L226 Difference]: Without dead ends: 414 [2025-02-08 05:05:32,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 05:05:32,394 INFO L435 NwaCegarLoop]: 523 mSDtfsCounter, 105 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 05:05:32,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1485 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 05:05:32,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2025-02-08 05:05:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 411. [2025-02-08 05:05:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 393 states have (on average 1.440203562340967) internal successors, (566), 402 states have internal predecessors, (566), 16 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:05:32,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 588 transitions. [2025-02-08 05:05:32,421 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 588 transitions. Word has length 152 [2025-02-08 05:05:32,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:05:32,421 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 588 transitions. [2025-02-08 05:05:32,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:05:32,421 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 588 transitions. [2025-02-08 05:05:32,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-08 05:05:32,427 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:32,428 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:32,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 05:05:32,428 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:32,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:32,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1656115071, now seen corresponding path program 1 times [2025-02-08 05:05:32,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:32,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124343360] [2025-02-08 05:05:32,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:32,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:32,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-08 05:05:32,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-08 05:05:32,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:32,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:32,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:05:32,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:05:32,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124343360] [2025-02-08 05:05:32,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124343360] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:05:32,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:05:32,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 05:05:32,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668209488] [2025-02-08 05:05:32,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:05:32,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 05:05:32,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:05:32,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 05:05:32,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:05:32,652 INFO L87 Difference]: Start difference. First operand 411 states and 588 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:05:32,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:05:32,773 INFO L93 Difference]: Finished difference Result 948 states and 1362 transitions. [2025-02-08 05:05:32,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 05:05:32,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2025-02-08 05:05:32,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:05:32,776 INFO L225 Difference]: With dead ends: 948 [2025-02-08 05:05:32,776 INFO L226 Difference]: Without dead ends: 539 [2025-02-08 05:05:32,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:05:32,777 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 134 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 05:05:32,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1077 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 05:05:32,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2025-02-08 05:05:32,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2025-02-08 05:05:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 521 states have (on average 1.4452975047984644) internal successors, (753), 530 states have internal predecessors, (753), 16 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:05:32,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 775 transitions. [2025-02-08 05:05:32,791 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 775 transitions. Word has length 152 [2025-02-08 05:05:32,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:05:32,791 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 775 transitions. [2025-02-08 05:05:32,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:05:32,792 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 775 transitions. [2025-02-08 05:05:32,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-08 05:05:32,794 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:32,795 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:32,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 05:05:32,795 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:32,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:32,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1598466155, now seen corresponding path program 1 times [2025-02-08 05:05:32,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:32,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595038384] [2025-02-08 05:05:32,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:32,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:32,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-08 05:05:32,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-08 05:05:32,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:32,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:33,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:05:33,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:05:33,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595038384] [2025-02-08 05:05:33,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595038384] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:05:33,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:05:33,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 05:05:33,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486869182] [2025-02-08 05:05:33,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:05:33,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 05:05:33,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:05:33,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 05:05:33,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 05:05:33,153 INFO L87 Difference]: Start difference. First operand 539 states and 775 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:05:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:05:33,289 INFO L93 Difference]: Finished difference Result 906 states and 1295 transitions. [2025-02-08 05:05:33,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 05:05:33,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 167 [2025-02-08 05:05:33,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:05:33,294 INFO L225 Difference]: With dead ends: 906 [2025-02-08 05:05:33,294 INFO L226 Difference]: Without dead ends: 497 [2025-02-08 05:05:33,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 05:05:33,296 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 30 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 05:05:33,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1334 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 05:05:33,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2025-02-08 05:05:33,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2025-02-08 05:05:33,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 479 states have (on average 1.4112734864300627) internal successors, (676), 488 states have internal predecessors, (676), 16 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:05:33,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 698 transitions. [2025-02-08 05:05:33,316 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 698 transitions. Word has length 167 [2025-02-08 05:05:33,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:05:33,316 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 698 transitions. [2025-02-08 05:05:33,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:05:33,317 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 698 transitions. [2025-02-08 05:05:33,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-08 05:05:33,318 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:33,318 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:33,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 05:05:33,318 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:33,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:33,319 INFO L85 PathProgramCache]: Analyzing trace with hash 356470373, now seen corresponding path program 1 times [2025-02-08 05:05:33,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:33,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461278560] [2025-02-08 05:05:33,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:33,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:33,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-08 05:05:33,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-08 05:05:33,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:33,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:05:33,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:05:33,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461278560] [2025-02-08 05:05:33,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461278560] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:05:33,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:05:33,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 05:05:33,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768028856] [2025-02-08 05:05:33,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:05:33,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 05:05:33,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:05:33,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 05:05:33,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:05:33,525 INFO L87 Difference]: Start difference. First operand 497 states and 698 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:05:33,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:05:33,669 INFO L93 Difference]: Finished difference Result 1008 states and 1403 transitions. [2025-02-08 05:05:33,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 05:05:33,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 167 [2025-02-08 05:05:33,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:05:33,673 INFO L225 Difference]: With dead ends: 1008 [2025-02-08 05:05:33,673 INFO L226 Difference]: Without dead ends: 641 [2025-02-08 05:05:33,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:05:33,675 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 242 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 05:05:33,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 928 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 05:05:33,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2025-02-08 05:05:33,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2025-02-08 05:05:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 620 states have (on average 1.3951612903225807) internal successors, (865), 629 states have internal predecessors, (865), 19 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 05:05:33,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 893 transitions. [2025-02-08 05:05:33,690 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 893 transitions. Word has length 167 [2025-02-08 05:05:33,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:05:33,691 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 893 transitions. [2025-02-08 05:05:33,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:05:33,691 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 893 transitions. [2025-02-08 05:05:33,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-02-08 05:05:33,692 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:33,693 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:33,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 05:05:33,693 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:33,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:33,693 INFO L85 PathProgramCache]: Analyzing trace with hash 979259711, now seen corresponding path program 1 times [2025-02-08 05:05:33,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:33,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033241381] [2025-02-08 05:05:33,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:33,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:33,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-02-08 05:05:33,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-02-08 05:05:33,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:33,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:34,013 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 05:05:34,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:05:34,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033241381] [2025-02-08 05:05:34,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033241381] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:05:34,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273749269] [2025-02-08 05:05:34,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:34,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:05:34,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:05:34,016 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 05:05:34,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 05:05:34,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-02-08 05:05:34,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-02-08 05:05:34,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:34,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:34,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 05:05:34,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 05:05:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 05:05:34,620 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 05:05:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 05:05:34,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273749269] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 05:05:34,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 05:05:34,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-08 05:05:34,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685213168] [2025-02-08 05:05:34,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 05:05:34,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 05:05:34,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:05:34,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 05:05:34,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 05:05:34,870 INFO L87 Difference]: Start difference. First operand 641 states and 893 transitions. Second operand has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-08 05:05:35,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:05:35,144 INFO L93 Difference]: Finished difference Result 1404 states and 1952 transitions. [2025-02-08 05:05:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 05:05:35,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 182 [2025-02-08 05:05:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:05:35,151 INFO L225 Difference]: With dead ends: 1404 [2025-02-08 05:05:35,151 INFO L226 Difference]: Without dead ends: 1379 [2025-02-08 05:05:35,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 05:05:35,153 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 2076 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 05:05:35,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 1886 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 05:05:35,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2025-02-08 05:05:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1379. [2025-02-08 05:05:35,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1343 states have (on average 1.3827252419955325) internal successors, (1857), 1352 states have internal predecessors, (1857), 34 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-08 05:05:35,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1915 transitions. [2025-02-08 05:05:35,187 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1915 transitions. Word has length 182 [2025-02-08 05:05:35,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:05:35,187 INFO L471 AbstractCegarLoop]: Abstraction has 1379 states and 1915 transitions. [2025-02-08 05:05:35,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-08 05:05:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1915 transitions. [2025-02-08 05:05:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2025-02-08 05:05:35,195 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:35,195 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:35,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 05:05:35,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:05:35,397 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:35,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:35,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1284587253, now seen corresponding path program 1 times [2025-02-08 05:05:35,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:35,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608664206] [2025-02-08 05:05:35,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:35,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:35,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 614 statements into 1 equivalence classes. [2025-02-08 05:05:35,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 614 of 614 statements. [2025-02-08 05:05:35,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:35,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 05:05:36,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:05:36,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608664206] [2025-02-08 05:05:36,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608664206] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:05:36,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906131103] [2025-02-08 05:05:36,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:05:36,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:05:36,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:05:36,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 05:05:36,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 05:05:37,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 614 statements into 1 equivalence classes. [2025-02-08 05:05:37,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 614 of 614 statements. [2025-02-08 05:05:37,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:05:37,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:05:37,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 05:05:37,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 05:05:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 05:05:38,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 05:05:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 05:05:38,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906131103] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 05:05:38,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 05:05:38,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-08 05:05:38,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041420295] [2025-02-08 05:05:38,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 05:05:38,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 05:05:38,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:05:38,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 05:05:38,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-08 05:05:38,784 INFO L87 Difference]: Start difference. First operand 1379 states and 1915 transitions. Second operand has 13 states, 13 states have (on average 103.0) internal successors, (1339), 13 states have internal predecessors, (1339), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-08 05:05:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:05:39,515 INFO L93 Difference]: Finished difference Result 3432 states and 4775 transitions. [2025-02-08 05:05:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 05:05:39,516 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 103.0) internal successors, (1339), 13 states have internal predecessors, (1339), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 614 [2025-02-08 05:05:39,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:05:39,530 INFO L225 Difference]: With dead ends: 3432 [2025-02-08 05:05:39,530 INFO L226 Difference]: Without dead ends: 3407 [2025-02-08 05:05:39,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1233 GetRequests, 1222 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-08 05:05:39,533 INFO L435 NwaCegarLoop]: 583 mSDtfsCounter, 6854 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6906 SdHoareTripleChecker+Valid, 5187 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 05:05:39,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6906 Valid, 5187 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 05:05:39,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2025-02-08 05:05:39,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 3407. [2025-02-08 05:05:39,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 3335 states have (on average 1.3808095952023989) internal successors, (4605), 3344 states have internal predecessors, (4605), 70 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-02-08 05:05:39,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 4735 transitions. [2025-02-08 05:05:39,613 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 4735 transitions. Word has length 614 [2025-02-08 05:05:39,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:05:39,614 INFO L471 AbstractCegarLoop]: Abstraction has 3407 states and 4735 transitions. [2025-02-08 05:05:39,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 103.0) internal successors, (1339), 13 states have internal predecessors, (1339), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-08 05:05:39,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 4735 transitions. [2025-02-08 05:05:39,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1479 [2025-02-08 05:05:39,656 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:05:39,656 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:05:39,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 05:05:39,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:05:39,857 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:05:39,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:05:39,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1643579555, now seen corresponding path program 2 times [2025-02-08 05:05:39,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:05:39,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585578925] [2025-02-08 05:05:39,859 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 05:05:39,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:05:40,292 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1478 statements into 2 equivalence classes.