./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 21:31:11,113 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 21:31:11,168 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 21:31:11,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 21:31:11,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 21:31:11,189 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 21:31:11,190 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 21:31:11,190 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 21:31:11,191 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 21:31:11,191 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 21:31:11,191 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 21:31:11,192 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 21:31:11,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 21:31:11,192 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 21:31:11,192 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 21:31:11,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 21:31:11,193 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 21:31:11,193 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 21:31:11,193 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 21:31:11,193 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 21:31:11,193 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 21:31:11,193 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 21:31:11,193 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 21:31:11,193 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 21:31:11,193 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 21:31:11,193 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 21:31:11,193 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 21:31:11,193 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 21:31:11,193 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 21:31:11,194 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 21:31:11,194 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 21:31:11,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 21:31:11,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:31:11,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 21:31:11,194 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 21:31:11,194 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 21:31:11,194 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 21:31:11,194 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 21:31:11,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 21:31:11,195 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 21:31:11,195 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 21:31:11,195 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 21:31:11,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 21:31:11,195 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 [2025-03-08 21:31:11,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 21:31:11,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 21:31:11,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 21:31:11,450 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 21:31:11,451 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 21:31:11,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2025-03-08 21:31:12,566 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/972bb6831/713bced3f7174e0e87184d60935c509d/FLAGac0839fba [2025-03-08 21:31:12,857 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 21:31:12,857 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2025-03-08 21:31:12,868 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/972bb6831/713bced3f7174e0e87184d60935c509d/FLAGac0839fba [2025-03-08 21:31:13,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/972bb6831/713bced3f7174e0e87184d60935c509d [2025-03-08 21:31:13,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 21:31:13,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 21:31:13,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 21:31:13,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 21:31:13,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 21:31:13,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:31:13" (1/1) ... [2025-03-08 21:31:13,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c72c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13, skipping insertion in model container [2025-03-08 21:31:13,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:31:13" (1/1) ... [2025-03-08 21:31:13,175 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 21:31:13,416 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2025-03-08 21:31:13,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:31:13,517 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 21:31:13,549 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2025-03-08 21:31:13,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:31:13,631 INFO L204 MainTranslator]: Completed translation [2025-03-08 21:31:13,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13 WrapperNode [2025-03-08 21:31:13,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 21:31:13,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 21:31:13,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 21:31:13,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 21:31:13,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13" (1/1) ... [2025-03-08 21:31:13,665 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13" (1/1) ... [2025-03-08 21:31:13,719 INFO L138 Inliner]: procedures = 176, calls = 335, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1540 [2025-03-08 21:31:13,719 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 21:31:13,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 21:31:13,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 21:31:13,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 21:31:13,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13" (1/1) ... [2025-03-08 21:31:13,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13" (1/1) ... [2025-03-08 21:31:13,736 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13" (1/1) ... [2025-03-08 21:31:13,790 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [2, 307]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 82 writes are split as follows [0, 82]. [2025-03-08 21:31:13,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13" (1/1) ... [2025-03-08 21:31:13,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13" (1/1) ... [2025-03-08 21:31:13,826 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13" (1/1) ... [2025-03-08 21:31:13,830 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13" (1/1) ... [2025-03-08 21:31:13,833 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13" (1/1) ... [2025-03-08 21:31:13,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13" (1/1) ... [2025-03-08 21:31:13,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 21:31:13,853 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 21:31:13,853 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 21:31:13,853 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 21:31:13,854 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13" (1/1) ... [2025-03-08 21:31:13,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:31:13,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:31:13,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 21:31:13,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 21:31:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 21:31:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 21:31:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 21:31:13,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 21:31:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 21:31:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 21:31:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-08 21:31:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-08 21:31:13,895 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-08 21:31:13,896 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-08 21:31:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 21:31:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 21:31:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 21:31:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 21:31:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 21:31:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 21:31:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 21:31:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 21:31:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 21:31:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 21:31:13,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 21:31:14,084 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 21:31:14,086 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 21:31:15,216 INFO L? ?]: Removed 387 outVars from TransFormulas that were not future-live. [2025-03-08 21:31:15,217 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 21:31:15,294 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 21:31:15,294 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-08 21:31:15,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:31:15 BoogieIcfgContainer [2025-03-08 21:31:15,294 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 21:31:15,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 21:31:15,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 21:31:15,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 21:31:15,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:31:13" (1/3) ... [2025-03-08 21:31:15,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47175efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:31:15, skipping insertion in model container [2025-03-08 21:31:15,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:13" (2/3) ... [2025-03-08 21:31:15,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47175efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:31:15, skipping insertion in model container [2025-03-08 21:31:15,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:31:15" (3/3) ... [2025-03-08 21:31:15,304 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-1.i [2025-03-08 21:31:15,313 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 21:31:15,314 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test4-1.i that has 4 procedures, 420 locations, 1 initial locations, 34 loop locations, and 1 error locations. [2025-03-08 21:31:15,356 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:31:15,367 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;@59d15488, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:31:15,367 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 21:31:15,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 416 states, 396 states have (on average 1.6161616161616161) internal successors, (640), 407 states have internal predecessors, (640), 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) [2025-03-08 21:31:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 21:31:15,377 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:15,377 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:31:15,377 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:31:15,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:15,381 INFO L85 PathProgramCache]: Analyzing trace with hash -225806160, now seen corresponding path program 1 times [2025-03-08 21:31:15,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:15,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400469688] [2025-03-08 21:31:15,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:15,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:15,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 21:31:15,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 21:31:15,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:15,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:15,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:15,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400469688] [2025-03-08 21:31:15,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400469688] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:15,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:15,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 21:31:15,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056157949] [2025-03-08 21:31:15,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:15,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:31:15,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:15,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:31:15,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:31:15,540 INFO L87 Difference]: Start difference. First operand has 416 states, 396 states have (on average 1.6161616161616161) internal successors, (640), 407 states have internal predecessors, (640), 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 2.6666666666666665) 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) [2025-03-08 21:31:15,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:15,711 INFO L93 Difference]: Finished difference Result 1208 states and 1966 transitions. [2025-03-08 21:31:15,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:31:15,713 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 [2025-03-08 21:31:15,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:15,723 INFO L225 Difference]: With dead ends: 1208 [2025-03-08 21:31:15,723 INFO L226 Difference]: Without dead ends: 791 [2025-03-08 21:31:15,726 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 [2025-03-08 21:31:15,730 INFO L435 NwaCegarLoop]: 610 mSDtfsCounter, 539 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:15,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 1171 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:31:15,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2025-03-08 21:31:15,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 414. [2025-03-08 21:31:15,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 395 states have (on average 1.4582278481012658) internal successors, (576), 405 states have internal predecessors, (576), 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) [2025-03-08 21:31:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 608 transitions. [2025-03-08 21:31:15,793 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 608 transitions. Word has length 9 [2025-03-08 21:31:15,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:15,794 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 608 transitions. [2025-03-08 21:31:15,794 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) [2025-03-08 21:31:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 608 transitions. [2025-03-08 21:31:15,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-08 21:31:15,802 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:15,802 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] [2025-03-08 21:31:15,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 21:31:15,803 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:31:15,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:15,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1367491672, now seen corresponding path program 1 times [2025-03-08 21:31:15,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:15,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324606844] [2025-03-08 21:31:15,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:15,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:15,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-08 21:31:15,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-08 21:31:15,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:15,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:16,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:16,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324606844] [2025-03-08 21:31:16,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324606844] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:16,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:16,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:31:16,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540395578] [2025-03-08 21:31:16,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:16,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:31:16,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:16,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:31:16,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:31:16,369 INFO L87 Difference]: Start difference. First operand 414 states and 608 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2025-03-08 21:31:16,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:16,537 INFO L93 Difference]: Finished difference Result 828 states and 1216 transitions. [2025-03-08 21:31:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 21:31:16,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 151 [2025-03-08 21:31:16,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:16,540 INFO L225 Difference]: With dead ends: 828 [2025-03-08 21:31:16,540 INFO L226 Difference]: Without dead ends: 417 [2025-03-08 21:31:16,545 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 [2025-03-08 21:31:16,546 INFO L435 NwaCegarLoop]: 536 mSDtfsCounter, 105 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:16,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1524 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:31:16,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2025-03-08 21:31:16,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 414. [2025-03-08 21:31:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 395 states have (on average 1.440506329113924) internal successors, (569), 405 states have internal predecessors, (569), 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) [2025-03-08 21:31:16,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 601 transitions. [2025-03-08 21:31:16,569 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 601 transitions. Word has length 151 [2025-03-08 21:31:16,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:16,569 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 601 transitions. [2025-03-08 21:31:16,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2025-03-08 21:31:16,570 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 601 transitions. [2025-03-08 21:31:16,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-08 21:31:16,574 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:16,574 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] [2025-03-08 21:31:16,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 21:31:16,575 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:31:16,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:16,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2146376350, now seen corresponding path program 1 times [2025-03-08 21:31:16,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:16,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693781677] [2025-03-08 21:31:16,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:16,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:16,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-08 21:31:16,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-08 21:31:16,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:16,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:16,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:16,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:16,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693781677] [2025-03-08 21:31:16,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693781677] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:16,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:16,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 21:31:16,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558907534] [2025-03-08 21:31:16,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:16,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:31:16,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:16,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:31:16,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:31:16,837 INFO L87 Difference]: Start difference. First operand 414 states and 601 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2025-03-08 21:31:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:17,020 INFO L93 Difference]: Finished difference Result 952 states and 1386 transitions. [2025-03-08 21:31:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:31:17,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 151 [2025-03-08 21:31:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:17,024 INFO L225 Difference]: With dead ends: 952 [2025-03-08 21:31:17,024 INFO L226 Difference]: Without dead ends: 541 [2025-03-08 21:31:17,028 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 [2025-03-08 21:31:17,029 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 134 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:17,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1103 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:31:17,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2025-03-08 21:31:17,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2025-03-08 21:31:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 522 states have (on average 1.446360153256705) internal successors, (755), 532 states have internal predecessors, (755), 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) [2025-03-08 21:31:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 787 transitions. [2025-03-08 21:31:17,058 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 787 transitions. Word has length 151 [2025-03-08 21:31:17,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:17,059 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 787 transitions. [2025-03-08 21:31:17,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2025-03-08 21:31:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 787 transitions. [2025-03-08 21:31:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-08 21:31:17,062 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:17,062 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] [2025-03-08 21:31:17,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 21:31:17,062 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:31:17,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:17,063 INFO L85 PathProgramCache]: Analyzing trace with hash 770752524, now seen corresponding path program 1 times [2025-03-08 21:31:17,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:17,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015091813] [2025-03-08 21:31:17,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:17,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:17,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-08 21:31:17,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-08 21:31:17,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:17,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:31:17,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:17,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015091813] [2025-03-08 21:31:17,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015091813] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:17,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:17,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:31:17,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567810523] [2025-03-08 21:31:17,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:17,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:31:17,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:17,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:31:17,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:31:17,430 INFO L87 Difference]: Start difference. First operand 541 states and 787 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2025-03-08 21:31:17,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:17,573 INFO L93 Difference]: Finished difference Result 910 states and 1319 transitions. [2025-03-08 21:31:17,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 21:31:17,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 166 [2025-03-08 21:31:17,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:17,576 INFO L225 Difference]: With dead ends: 910 [2025-03-08 21:31:17,576 INFO L226 Difference]: Without dead ends: 499 [2025-03-08 21:31:17,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 21:31:17,580 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 30 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1373 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 [2025-03-08 21:31:17,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1373 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:31:17,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2025-03-08 21:31:17,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2025-03-08 21:31:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 480 states have (on average 1.4125) internal successors, (678), 490 states have internal predecessors, (678), 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) [2025-03-08 21:31:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 710 transitions. [2025-03-08 21:31:17,598 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 710 transitions. Word has length 166 [2025-03-08 21:31:17,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:17,598 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 710 transitions. [2025-03-08 21:31:17,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2025-03-08 21:31:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 710 transitions. [2025-03-08 21:31:17,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-08 21:31:17,601 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:17,601 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] [2025-03-08 21:31:17,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 21:31:17,601 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:31:17,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:17,602 INFO L85 PathProgramCache]: Analyzing trace with hash 482985637, now seen corresponding path program 1 times [2025-03-08 21:31:17,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:17,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168763526] [2025-03-08 21:31:17,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:17,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:17,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-08 21:31:17,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-08 21:31:17,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:17,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:31:17,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:17,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168763526] [2025-03-08 21:31:17,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168763526] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:17,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:17,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 21:31:17,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014452239] [2025-03-08 21:31:17,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:17,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:31:17,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:17,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:31:17,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:31:17,813 INFO L87 Difference]: Start difference. First operand 499 states and 710 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2025-03-08 21:31:17,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:17,935 INFO L93 Difference]: Finished difference Result 1011 states and 1426 transitions. [2025-03-08 21:31:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:31:17,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 166 [2025-03-08 21:31:17,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:17,938 INFO L225 Difference]: With dead ends: 1011 [2025-03-08 21:31:17,938 INFO L226 Difference]: Without dead ends: 642 [2025-03-08 21:31:17,939 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 [2025-03-08 21:31:17,939 INFO L435 NwaCegarLoop]: 481 mSDtfsCounter, 242 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 954 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 [2025-03-08 21:31:17,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 954 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:31:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2025-03-08 21:31:17,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2025-03-08 21:31:17,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.396774193548387) internal successors, (866), 630 states have internal predecessors, (866), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-08 21:31:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 904 transitions. [2025-03-08 21:31:17,967 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 904 transitions. Word has length 166 [2025-03-08 21:31:17,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:17,969 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 904 transitions. [2025-03-08 21:31:17,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2025-03-08 21:31:17,971 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 904 transitions. [2025-03-08 21:31:17,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-03-08 21:31:17,972 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:17,972 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] [2025-03-08 21:31:17,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 21:31:17,973 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:31:17,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:17,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1095026314, now seen corresponding path program 1 times [2025-03-08 21:31:17,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:17,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260425181] [2025-03-08 21:31:17,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:17,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:18,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-08 21:31:18,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-08 21:31:18,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:18,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:18,277 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:31:18,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:18,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260425181] [2025-03-08 21:31:18,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260425181] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:31:18,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423635546] [2025-03-08 21:31:18,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:18,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:31:18,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:31:18,280 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 21:31:18,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 21:31:18,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-08 21:31:18,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-08 21:31:18,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:18,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:18,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 21:31:18,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:31:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:31:18,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 21:31:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:31:19,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423635546] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 21:31:19,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 21:31:19,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-08 21:31:19,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403927130] [2025-03-08 21:31:19,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 21:31:19,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:31:19,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:19,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:31:19,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:31:19,076 INFO L87 Difference]: Start difference. First operand 642 states and 904 transitions. Second operand has 7 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 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) [2025-03-08 21:31:19,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:19,350 INFO L93 Difference]: Finished difference Result 1405 states and 1973 transitions. [2025-03-08 21:31:19,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:31:19,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 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 181 [2025-03-08 21:31:19,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:19,358 INFO L225 Difference]: With dead ends: 1405 [2025-03-08 21:31:19,358 INFO L226 Difference]: Without dead ends: 1376 [2025-03-08 21:31:19,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:31:19,360 INFO L435 NwaCegarLoop]: 518 mSDtfsCounter, 2288 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2304 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:19,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2304 Valid, 1918 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:31:19,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2025-03-08 21:31:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1376. [2025-03-08 21:31:19,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1339 states have (on average 1.3846153846153846) internal successors, (1854), 1349 states have internal predecessors, (1854), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-08 21:31:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1922 transitions. [2025-03-08 21:31:19,406 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1922 transitions. Word has length 181 [2025-03-08 21:31:19,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:19,406 INFO L471 AbstractCegarLoop]: Abstraction has 1376 states and 1922 transitions. [2025-03-08 21:31:19,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 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) [2025-03-08 21:31:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1922 transitions. [2025-03-08 21:31:19,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2025-03-08 21:31:19,417 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:19,418 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, 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, 1] [2025-03-08 21:31:19,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 21:31:19,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-08 21:31:19,619 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:31:19,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:19,620 INFO L85 PathProgramCache]: Analyzing trace with hash -14604577, now seen corresponding path program 1 times [2025-03-08 21:31:19,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:19,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022126279] [2025-03-08 21:31:19,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:19,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:19,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 607 statements into 1 equivalence classes. [2025-03-08 21:31:20,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 607 of 607 statements. [2025-03-08 21:31:20,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:20,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 844 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:31:20,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:20,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022126279] [2025-03-08 21:31:20,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022126279] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:31:20,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749658868] [2025-03-08 21:31:20,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:20,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:31:20,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:31:20,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 21:31:20,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 21:31:21,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 607 statements into 1 equivalence classes. [2025-03-08 21:31:21,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 607 of 607 statements. [2025-03-08 21:31:21,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:21,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:21,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 3104 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 21:31:21,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:31:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 844 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:31:22,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 21:31:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 844 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:31:22,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749658868] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 21:31:22,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 21:31:22,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-08 21:31:22,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359370567] [2025-03-08 21:31:22,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 21:31:22,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 21:31:22,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:23,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 21:31:23,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-08 21:31:23,001 INFO L87 Difference]: Start difference. First operand 1376 states and 1922 transitions. Second operand has 13 states, 13 states have (on average 101.6923076923077) internal successors, (1322), 13 states have internal predecessors, (1322), 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) [2025-03-08 21:31:23,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:23,688 INFO L93 Difference]: Finished difference Result 3421 states and 4784 transitions. [2025-03-08 21:31:23,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 21:31:23,689 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 101.6923076923077) internal successors, (1322), 13 states have internal predecessors, (1322), 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 607 [2025-03-08 21:31:23,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:23,701 INFO L225 Difference]: With dead ends: 3421 [2025-03-08 21:31:23,701 INFO L226 Difference]: Without dead ends: 3392 [2025-03-08 21:31:23,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1219 GetRequests, 1208 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-08 21:31:23,703 INFO L435 NwaCegarLoop]: 518 mSDtfsCounter, 6885 mSDsluCounter, 4539 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6937 SdHoareTripleChecker+Valid, 5057 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:23,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6937 Valid, 5057 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:31:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2025-03-08 21:31:23,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 3392. [2025-03-08 21:31:23,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3392 states, 3319 states have (on average 1.3829466706839408) internal successors, (4590), 3329 states have internal predecessors, (4590), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2025-03-08 21:31:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3392 states to 3392 states and 4730 transitions. [2025-03-08 21:31:23,768 INFO L78 Accepts]: Start accepts. Automaton has 3392 states and 4730 transitions. Word has length 607 [2025-03-08 21:31:23,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:23,768 INFO L471 AbstractCegarLoop]: Abstraction has 3392 states and 4730 transitions. [2025-03-08 21:31:23,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.6923076923077) internal successors, (1322), 13 states have internal predecessors, (1322), 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) [2025-03-08 21:31:23,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3392 states and 4730 transitions. [2025-03-08 21:31:23,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1460 [2025-03-08 21:31:23,802 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:23,803 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, 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, 1] [2025-03-08 21:31:23,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 21:31:24,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-03-08 21:31:24,004 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:31:24,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:24,005 INFO L85 PathProgramCache]: Analyzing trace with hash 479934665, now seen corresponding path program 2 times [2025-03-08 21:31:24,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:24,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642788980] [2025-03-08 21:31:24,005 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 21:31:24,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:24,370 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1459 statements into 2 equivalence classes.