./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_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_OAT_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 e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 04:57:55,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 04:57:55,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 04:57:55,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 04:57:55,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 04:57:55,147 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 04:57:55,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 04:57:55,148 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 04:57:55,149 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 04:57:55,149 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 04:57:55,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 04:57:55,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 04:57:55,150 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 04:57:55,150 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 04:57:55,150 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 04:57:55,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 04:57:55,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 04:57:55,151 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 04:57:55,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 04:57:55,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 04:57:55,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 04:57:55,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 04:57:55,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 04:57:55,151 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 04:57:55,151 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 04:57:55,151 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 04:57:55,151 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 04:57:55,152 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 04:57:55,152 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 04:57:55,152 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 04:57:55,152 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 04:57:55,152 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 04:57:55,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 04:57:55,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 04:57:55,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 04:57:55,153 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 04:57:55,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 04:57:55,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 04:57:55,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 04:57:55,153 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 04:57:55,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 04:57:55,153 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 04:57:55,153 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 04:57:55,153 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 -> e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd [2025-02-08 04:57:55,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 04:57:55,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 04:57:55,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 04:57:55,422 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 04:57:55,423 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 04:57:55,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2025-02-08 04:57:56,638 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dff04e4bd/7da58bdeea4349c89ffd2bdbeeb26080/FLAG83fd6f2cb [2025-02-08 04:57:56,923 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 04:57:56,925 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2025-02-08 04:57:56,940 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dff04e4bd/7da58bdeea4349c89ffd2bdbeeb26080/FLAG83fd6f2cb [2025-02-08 04:57:56,955 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dff04e4bd/7da58bdeea4349c89ffd2bdbeeb26080 [2025-02-08 04:57:56,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 04:57:56,959 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 04:57:56,960 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 04:57:56,960 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 04:57:56,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 04:57:56,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 04:57:56" (1/1) ... [2025-02-08 04:57:56,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d2d9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:56, skipping insertion in model container [2025-02-08 04:57:56,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 04:57:56" (1/1) ... [2025-02-08 04:57:57,008 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 04:57:57,298 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i[33021,33034] [2025-02-08 04:57:57,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 04:57:57,421 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 04:57:57,454 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i[33021,33034] [2025-02-08 04:57:57,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 04:57:57,539 INFO L204 MainTranslator]: Completed translation [2025-02-08 04:57:57,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:57 WrapperNode [2025-02-08 04:57:57,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 04:57:57,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 04:57:57,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 04:57:57,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 04:57:57,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:57" (1/1) ... [2025-02-08 04:57:57,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:57" (1/1) ... [2025-02-08 04:57:57,614 INFO L138 Inliner]: procedures = 176, calls = 386, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1699 [2025-02-08 04:57:57,615 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 04:57:57,615 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 04:57:57,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 04:57:57,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 04:57:57,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:57" (1/1) ... [2025-02-08 04:57:57,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:57" (1/1) ... [2025-02-08 04:57:57,643 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:57" (1/1) ... [2025-02-08 04:57:57,730 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 04:57:57,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:57" (1/1) ... [2025-02-08 04:57:57,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:57" (1/1) ... [2025-02-08 04:57:57,770 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:57" (1/1) ... [2025-02-08 04:57:57,773 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:57" (1/1) ... [2025-02-08 04:57:57,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:57" (1/1) ... [2025-02-08 04:57:57,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:57" (1/1) ... [2025-02-08 04:57:57,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 04:57:57,817 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 04:57:57,817 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 04:57:57,817 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 04:57:57,818 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:57" (1/1) ... [2025-02-08 04:57:57,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 04:57:57,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:57:57,848 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 04:57:57,851 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 04:57:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 04:57:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 04:57:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 04:57:57,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 04:57:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 04:57:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 04:57:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 04:57:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 04:57:57,870 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 04:57:57,871 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 04:57:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 04:57:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 04:57:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 04:57:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 04:57:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 04:57:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 04:57:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 04:57:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 04:57:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 04:57:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 04:57:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 04:57:58,067 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 04:57:58,068 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 04:57:59,547 INFO L? ?]: Removed 408 outVars from TransFormulas that were not future-live. [2025-02-08 04:57:59,548 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 04:57:59,583 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 04:57:59,583 INFO L337 CfgBuilder]: Removed 2 assume(true) statements. [2025-02-08 04:57:59,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 04:57:59 BoogieIcfgContainer [2025-02-08 04:57:59,584 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 04:57:59,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 04:57:59,586 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 04:57:59,589 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 04:57:59,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 04:57:56" (1/3) ... [2025-02-08 04:57:59,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae04785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 04:57:59, skipping insertion in model container [2025-02-08 04:57:59,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:57:57" (2/3) ... [2025-02-08 04:57:59,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae04785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 04:57:59, skipping insertion in model container [2025-02-08 04:57:59,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 04:57:59" (3/3) ... [2025-02-08 04:57:59,591 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-2.i [2025-02-08 04:57:59,601 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 04:57:59,602 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test4-2.i that has 4 procedures, 452 locations, 1 initial locations, 41 loop locations, and 1 error locations. [2025-02-08 04:57:59,649 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 04:57:59,656 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;@9a23eee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 04:57:59,656 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 04:57:59,663 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 04:57:59,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 04:57:59,668 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:57:59,668 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:57:59,668 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:57:59,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:57:59,672 INFO L85 PathProgramCache]: Analyzing trace with hash -31106761, now seen corresponding path program 1 times [2025-02-08 04:57:59,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:57:59,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515077223] [2025-02-08 04:57:59,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:57:59,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:57:59,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 04:57:59,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 04:57:59,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:57:59,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:57:59,839 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 04:57:59,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:57:59,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515077223] [2025-02-08 04:57:59,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515077223] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:57:59,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:57:59,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 04:57:59,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860859811] [2025-02-08 04:57:59,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:57:59,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 04:57:59,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:57:59,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 04:57:59,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 04:57:59,863 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 04:58:00,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:58:00,063 INFO L93 Difference]: Finished difference Result 1275 states and 2073 transitions. [2025-02-08 04:58:00,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 04:58:00,065 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 04:58:00,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:58:00,078 INFO L225 Difference]: With dead ends: 1275 [2025-02-08 04:58:00,079 INFO L226 Difference]: Without dead ends: 790 [2025-02-08 04:58:00,084 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 04:58:00,086 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 04:58:00,087 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 04:58:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2025-02-08 04:58:00,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 411. [2025-02-08 04:58:00,134 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 04:58:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 595 transitions. [2025-02-08 04:58:00,139 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 595 transitions. Word has length 8 [2025-02-08 04:58:00,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:58:00,139 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 595 transitions. [2025-02-08 04:58:00,140 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 04:58:00,140 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 595 transitions. [2025-02-08 04:58:00,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-08 04:58:00,144 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:58:00,144 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 04:58:00,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 04:58:00,145 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:58:00,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:58:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash -28097145, now seen corresponding path program 1 times [2025-02-08 04:58:00,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:58:00,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948749634] [2025-02-08 04:58:00,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:58:00,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:58:00,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-08 04:58:00,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-08 04:58:00,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:58:00,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:58:00,762 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 04:58:00,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:58:00,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948749634] [2025-02-08 04:58:00,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948749634] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:58:00,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:58:00,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:58:00,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426671899] [2025-02-08 04:58:00,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:58:00,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:58:00,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:58:00,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:58:00,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:58:00,766 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 04:58:00,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:58:00,957 INFO L93 Difference]: Finished difference Result 823 states and 1191 transitions. [2025-02-08 04:58:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 04:58:00,958 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 04:58:00,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:58:00,960 INFO L225 Difference]: With dead ends: 823 [2025-02-08 04:58:00,960 INFO L226 Difference]: Without dead ends: 414 [2025-02-08 04:58:00,964 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 04:58:00,965 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 04:58:00,966 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 04:58:00,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2025-02-08 04:58:00,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 411. [2025-02-08 04:58:00,989 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 04:58:00,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 588 transitions. [2025-02-08 04:58:00,994 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 588 transitions. Word has length 152 [2025-02-08 04:58:00,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:58:00,994 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 588 transitions. [2025-02-08 04:58:00,994 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 04:58:00,995 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 588 transitions. [2025-02-08 04:58:00,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-08 04:58:00,997 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:58:00,997 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 04:58:00,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 04:58:00,997 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:58:00,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:58:00,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1656115071, now seen corresponding path program 1 times [2025-02-08 04:58:00,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:58:00,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453637174] [2025-02-08 04:58:00,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:58:00,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:58:01,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-08 04:58:01,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-08 04:58:01,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:58:01,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:58:01,252 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 04:58:01,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:58:01,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453637174] [2025-02-08 04:58:01,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453637174] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:58:01,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:58:01,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 04:58:01,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868527222] [2025-02-08 04:58:01,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:58:01,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 04:58:01,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:58:01,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 04:58:01,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 04:58:01,254 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 04:58:01,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:58:01,381 INFO L93 Difference]: Finished difference Result 948 states and 1362 transitions. [2025-02-08 04:58:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 04:58:01,382 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 04:58:01,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:58:01,384 INFO L225 Difference]: With dead ends: 948 [2025-02-08 04:58:01,384 INFO L226 Difference]: Without dead ends: 539 [2025-02-08 04:58:01,385 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 04:58:01,386 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 04:58:01,386 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 04:58:01,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2025-02-08 04:58:01,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2025-02-08 04:58:01,398 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 04:58:01,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 775 transitions. [2025-02-08 04:58:01,400 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 775 transitions. Word has length 152 [2025-02-08 04:58:01,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:58:01,401 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 775 transitions. [2025-02-08 04:58:01,401 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 04:58:01,401 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 775 transitions. [2025-02-08 04:58:01,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-08 04:58:01,403 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:58:01,403 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 04:58:01,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 04:58:01,403 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:58:01,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:58:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1598466155, now seen corresponding path program 1 times [2025-02-08 04:58:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:58:01,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115763570] [2025-02-08 04:58:01,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:58:01,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:58:01,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-08 04:58:01,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-08 04:58:01,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:58:01,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:58:01,724 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 04:58:01,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:58:01,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115763570] [2025-02-08 04:58:01,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115763570] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:58:01,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:58:01,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:58:01,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995156220] [2025-02-08 04:58:01,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:58:01,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:58:01,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:58:01,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:58:01,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:58:01,727 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 04:58:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:58:01,861 INFO L93 Difference]: Finished difference Result 906 states and 1295 transitions. [2025-02-08 04:58:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 04:58:01,862 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 04:58:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:58:01,864 INFO L225 Difference]: With dead ends: 906 [2025-02-08 04:58:01,865 INFO L226 Difference]: Without dead ends: 497 [2025-02-08 04:58:01,866 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 04:58:01,867 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 04:58:01,868 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 04:58:01,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2025-02-08 04:58:01,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2025-02-08 04:58:01,881 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 04:58:01,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 698 transitions. [2025-02-08 04:58:01,884 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 698 transitions. Word has length 167 [2025-02-08 04:58:01,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:58:01,885 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 698 transitions. [2025-02-08 04:58:01,885 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 04:58:01,885 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 698 transitions. [2025-02-08 04:58:01,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-08 04:58:01,887 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:58:01,887 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 04:58:01,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 04:58:01,887 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:58:01,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:58:01,887 INFO L85 PathProgramCache]: Analyzing trace with hash 356470373, now seen corresponding path program 1 times [2025-02-08 04:58:01,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:58:01,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124922323] [2025-02-08 04:58:01,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:58:01,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:58:01,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-08 04:58:01,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-08 04:58:01,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:58:01,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:58:02,120 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 04:58:02,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:58:02,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124922323] [2025-02-08 04:58:02,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124922323] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:58:02,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:58:02,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 04:58:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574752882] [2025-02-08 04:58:02,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:58:02,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 04:58:02,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:58:02,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 04:58:02,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 04:58:02,122 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 04:58:02,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:58:02,260 INFO L93 Difference]: Finished difference Result 1008 states and 1403 transitions. [2025-02-08 04:58:02,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 04:58:02,262 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 04:58:02,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:58:02,265 INFO L225 Difference]: With dead ends: 1008 [2025-02-08 04:58:02,266 INFO L226 Difference]: Without dead ends: 641 [2025-02-08 04:58:02,268 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 04:58:02,269 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 04:58:02,270 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 04:58:02,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2025-02-08 04:58:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2025-02-08 04:58:02,289 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 04:58:02,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 893 transitions. [2025-02-08 04:58:02,292 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 893 transitions. Word has length 167 [2025-02-08 04:58:02,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:58:02,293 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 893 transitions. [2025-02-08 04:58:02,294 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 04:58:02,295 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 893 transitions. [2025-02-08 04:58:02,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-02-08 04:58:02,297 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:58:02,297 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 04:58:02,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 04:58:02,297 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:58:02,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:58:02,298 INFO L85 PathProgramCache]: Analyzing trace with hash 979259711, now seen corresponding path program 1 times [2025-02-08 04:58:02,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:58:02,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622900661] [2025-02-08 04:58:02,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:58:02,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:58:02,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-02-08 04:58:02,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-02-08 04:58:02,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:58:02,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:58:02,629 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 04:58:02,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:58:02,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622900661] [2025-02-08 04:58:02,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622900661] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:58:02,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584167605] [2025-02-08 04:58:02,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:58:02,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:58:02,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:58:02,635 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 04:58:02,636 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 04:58:02,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-02-08 04:58:03,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-02-08 04:58:03,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:58:03,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:58:03,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 04:58:03,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:58:03,262 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 04:58:03,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:58:03,483 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 04:58:03,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584167605] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 04:58:03,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 04:58:03,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-08 04:58:03,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887323681] [2025-02-08 04:58:03,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 04:58:03,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 04:58:03,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:58:03,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 04:58:03,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 04:58:03,487 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 04:58:03,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:58:03,752 INFO L93 Difference]: Finished difference Result 1404 states and 1952 transitions. [2025-02-08 04:58:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 04:58:03,753 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 04:58:03,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:58:03,760 INFO L225 Difference]: With dead ends: 1404 [2025-02-08 04:58:03,760 INFO L226 Difference]: Without dead ends: 1379 [2025-02-08 04:58:03,761 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 04:58:03,762 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 04:58:03,762 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 04:58:03,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2025-02-08 04:58:03,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1379. [2025-02-08 04:58:03,794 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 04:58:03,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1915 transitions. [2025-02-08 04:58:03,800 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1915 transitions. Word has length 182 [2025-02-08 04:58:03,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:58:03,800 INFO L471 AbstractCegarLoop]: Abstraction has 1379 states and 1915 transitions. [2025-02-08 04:58:03,801 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 04:58:03,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1915 transitions. [2025-02-08 04:58:03,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2025-02-08 04:58:03,811 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:58:03,812 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 04:58:03,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 04:58:04,016 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 04:58:04,017 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:58:04,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:58:04,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1284587253, now seen corresponding path program 1 times [2025-02-08 04:58:04,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:58:04,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456998570] [2025-02-08 04:58:04,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:58:04,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:58:04,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 614 statements into 1 equivalence classes. [2025-02-08 04:58:04,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 614 of 614 statements. [2025-02-08 04:58:04,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:58:04,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:58:05,387 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 04:58:05,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:58:05,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456998570] [2025-02-08 04:58:05,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456998570] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:58:05,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817272983] [2025-02-08 04:58:05,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:58:05,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:58:05,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:58:05,393 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 04:58:05,402 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 04:58:05,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 614 statements into 1 equivalence classes. [2025-02-08 04:58:06,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 614 of 614 statements. [2025-02-08 04:58:06,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:58:06,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:58:06,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 04:58:06,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:58:06,899 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 04:58:06,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:58:07,513 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 04:58:07,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817272983] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 04:58:07,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 04:58:07,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-08 04:58:07,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805595545] [2025-02-08 04:58:07,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 04:58:07,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 04:58:07,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:58:07,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 04:58:07,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-08 04:58:07,520 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 04:58:08,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:58:08,299 INFO L93 Difference]: Finished difference Result 3432 states and 4775 transitions. [2025-02-08 04:58:08,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 04:58:08,299 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 04:58:08,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:58:08,314 INFO L225 Difference]: With dead ends: 3432 [2025-02-08 04:58:08,314 INFO L226 Difference]: Without dead ends: 3407 [2025-02-08 04:58:08,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1233 GetRequests, 1222 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-08 04:58:08,317 INFO L435 NwaCegarLoop]: 583 mSDtfsCounter, 6854 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 04:58:08,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6906 Valid, 5187 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 04:58:08,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2025-02-08 04:58:08,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 3407. [2025-02-08 04:58:08,407 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 04:58:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 4735 transitions. [2025-02-08 04:58:08,423 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 4735 transitions. Word has length 614 [2025-02-08 04:58:08,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:58:08,426 INFO L471 AbstractCegarLoop]: Abstraction has 3407 states and 4735 transitions. [2025-02-08 04:58:08,426 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 04:58:08,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 4735 transitions. [2025-02-08 04:58:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1479 [2025-02-08 04:58:08,477 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:58:08,478 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 04:58:08,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 04:58:08,678 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 04:58:08,679 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:58:08,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:58:08,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1643579555, now seen corresponding path program 2 times [2025-02-08 04:58:08,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:58:08,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164648473] [2025-02-08 04:58:08,680 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 04:58:08,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:58:09,097 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1478 statements into 2 equivalence classes.