./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.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 be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 20:56:56,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 20:56:56,472 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 20:56:56,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 20:56:56,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 20:56:56,502 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 20:56:56,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 20:56:56,503 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 20:56:56,504 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 20:56:56,504 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 20:56:56,505 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 20:56:56,505 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 20:56:56,505 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 20:56:56,505 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 20:56:56,505 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 20:56:56,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 20:56:56,505 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 20:56:56,505 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 20:56:56,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 20:56:56,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 20:56:56,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 20:56:56,506 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 20:56:56,506 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 20:56:56,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 20:56:56,507 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 20:56:56,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 20:56:56,507 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 20:56:56,507 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 20:56:56,507 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 20:56:56,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 20:56:56,507 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 20:56:56,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 20:56:56,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:56:56,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 20:56:56,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 20:56:56,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 20:56:56,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 20:56:56,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:56:56,508 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 20:56:56,508 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 20:56:56,509 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 20:56:56,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 20:56:56,509 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 20:56:56,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 20:56:56,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 20:56:56,509 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 20:56:56,509 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 20:56:56,509 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 20:56:56,509 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 -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2025-01-09 20:56:56,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 20:56:56,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 20:56:56,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 20:56:56,796 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 20:56:56,797 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 20:56:56,798 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i [2025-01-09 20:56:58,122 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4eb036dbe/4ef6d2d0f3574dd3bbab337f0fd2c9a5/FLAG6522bc590 [2025-01-09 20:56:58,513 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 20:56:58,514 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i [2025-01-09 20:56:58,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4eb036dbe/4ef6d2d0f3574dd3bbab337f0fd2c9a5/FLAG6522bc590 [2025-01-09 20:56:58,563 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4eb036dbe/4ef6d2d0f3574dd3bbab337f0fd2c9a5 [2025-01-09 20:56:58,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 20:56:58,568 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 20:56:58,570 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 20:56:58,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 20:56:58,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 20:56:58,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 08:56:58" (1/1) ... [2025-01-09 20:56:58,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f99ca09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:58, skipping insertion in model container [2025-01-09 20:56:58,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 08:56:58" (1/1) ... [2025-01-09 20:56:58,621 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 20:56:58,963 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i[33519,33532] [2025-01-09 20:56:59,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 20:56:59,099 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 20:56:59,133 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i[33519,33532] [2025-01-09 20:56:59,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 20:56:59,237 INFO L204 MainTranslator]: Completed translation [2025-01-09 20:56:59,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59 WrapperNode [2025-01-09 20:56:59,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 20:56:59,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 20:56:59,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 20:56:59,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 20:56:59,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59" (1/1) ... [2025-01-09 20:56:59,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59" (1/1) ... [2025-01-09 20:56:59,332 INFO L138 Inliner]: procedures = 177, calls = 324, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1545 [2025-01-09 20:56:59,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 20:56:59,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 20:56:59,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 20:56:59,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 20:56:59,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59" (1/1) ... [2025-01-09 20:56:59,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59" (1/1) ... [2025-01-09 20:56:59,359 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59" (1/1) ... [2025-01-09 20:56:59,456 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [2, 266, 34]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 58, 4]. [2025-01-09 20:56:59,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59" (1/1) ... [2025-01-09 20:56:59,461 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59" (1/1) ... [2025-01-09 20:56:59,503 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59" (1/1) ... [2025-01-09 20:56:59,507 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59" (1/1) ... [2025-01-09 20:56:59,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59" (1/1) ... [2025-01-09 20:56:59,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59" (1/1) ... [2025-01-09 20:56:59,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59" (1/1) ... [2025-01-09 20:56:59,552 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 20:56:59,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 20:56:59,553 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 20:56:59,553 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 20:56:59,554 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59" (1/1) ... [2025-01-09 20:56:59,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:56:59,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:56:59,593 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) [2025-01-09 20:56:59,630 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 [2025-01-09 20:56:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 20:56:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 20:56:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 20:56:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 20:56:59,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 20:56:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 20:56:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 20:56:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 20:56:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-01-09 20:56:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-01-09 20:56:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-01-09 20:56:59,643 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-01-09 20:56:59,643 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-01-09 20:56:59,643 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-01-09 20:56:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 20:56:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 20:56:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 20:56:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 20:56:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-09 20:56:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 20:56:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 20:56:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 20:56:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-09 20:56:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 20:56:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 20:56:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 20:56:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 20:56:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 20:56:59,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 20:56:59,877 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 20:56:59,879 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 20:57:01,534 INFO L? ?]: Removed 335 outVars from TransFormulas that were not future-live. [2025-01-09 20:57:01,534 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 20:57:01,558 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 20:57:01,558 INFO L312 CfgBuilder]: Removed 35 assume(true) statements. [2025-01-09 20:57:01,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:57:01 BoogieIcfgContainer [2025-01-09 20:57:01,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 20:57:01,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 20:57:01,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 20:57:01,567 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 20:57:01,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 08:56:58" (1/3) ... [2025-01-09 20:57:01,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5704e446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 08:57:01, skipping insertion in model container [2025-01-09 20:57:01,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:59" (2/3) ... [2025-01-09 20:57:01,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5704e446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 08:57:01, skipping insertion in model container [2025-01-09 20:57:01,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:57:01" (3/3) ... [2025-01-09 20:57:01,570 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test3-2.i [2025-01-09 20:57:01,583 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 20:57:01,585 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_nondet_test3-2.i that has 5 procedures, 440 locations, 1 initial locations, 43 loop locations, and 1 error locations. [2025-01-09 20:57:01,656 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 20:57:01,668 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;@6fd0168f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 20:57:01,668 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 20:57:01,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 432 states, 423 states have (on average 1.6146572104018913) internal successors, (683), 425 states have internal predecessors, (683), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 20:57:01,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-09 20:57:01,681 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:57:01,682 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:57:01,682 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:57:01,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:57:01,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1623818882, now seen corresponding path program 1 times [2025-01-09 20:57:01,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:57:01,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822707231] [2025-01-09 20:57:01,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:57:01,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:57:01,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 20:57:01,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 20:57:01,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:57:01,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:57:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:57:01,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:57:01,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822707231] [2025-01-09 20:57:01,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822707231] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:57:01,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:57:01,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 20:57:01,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311019001] [2025-01-09 20:57:01,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:57:01,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 20:57:01,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:57:01,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 20:57:01,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 20:57:01,880 INFO L87 Difference]: Start difference. First operand has 432 states, 423 states have (on average 1.6146572104018913) internal successors, (683), 425 states have internal predecessors, (683), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2025-01-09 20:57:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:57:01,948 INFO L93 Difference]: Finished difference Result 861 states and 1384 transitions. [2025-01-09 20:57:01,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 20:57:01,950 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 12 [2025-01-09 20:57:01,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:57:01,959 INFO L225 Difference]: With dead ends: 861 [2025-01-09 20:57:01,959 INFO L226 Difference]: Without dead ends: 396 [2025-01-09 20:57:01,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 20:57:01,967 INFO L435 NwaCegarLoop]: 622 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 20:57:01,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 20:57:01,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2025-01-09 20:57:02,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2025-01-09 20:57:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 388 states have (on average 1.4484536082474226) internal successors, (562), 389 states have internal predecessors, (562), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 20:57:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 572 transitions. [2025-01-09 20:57:02,035 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 572 transitions. Word has length 12 [2025-01-09 20:57:02,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:57:02,036 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 572 transitions. [2025-01-09 20:57:02,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2025-01-09 20:57:02,036 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 572 transitions. [2025-01-09 20:57:02,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-09 20:57:02,036 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:57:02,036 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:57:02,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 20:57:02,037 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:57:02,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:57:02,037 INFO L85 PathProgramCache]: Analyzing trace with hash -923694428, now seen corresponding path program 1 times [2025-01-09 20:57:02,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:57:02,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438547069] [2025-01-09 20:57:02,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:57:02,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:57:02,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 20:57:02,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 20:57:02,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:57:02,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:57:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:57:02,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:57:02,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438547069] [2025-01-09 20:57:02,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438547069] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:57:02,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:57:02,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 20:57:02,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231333508] [2025-01-09 20:57:02,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:57:02,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 20:57:02,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:57:02,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 20:57:02,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 20:57:02,260 INFO L87 Difference]: Start difference. First operand 396 states and 572 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2025-01-09 20:57:02,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:57:02,554 INFO L93 Difference]: Finished difference Result 1084 states and 1584 transitions. [2025-01-09 20:57:02,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 20:57:02,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 14 [2025-01-09 20:57:02,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:57:02,564 INFO L225 Difference]: With dead ends: 1084 [2025-01-09 20:57:02,564 INFO L226 Difference]: Without dead ends: 689 [2025-01-09 20:57:02,566 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 [2025-01-09 20:57:02,567 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 430 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 20:57:02,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1636 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 20:57:02,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2025-01-09 20:57:02,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 688. [2025-01-09 20:57:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 679 states have (on average 1.4683357879234167) internal successors, (997), 681 states have internal predecessors, (997), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 20:57:02,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1009 transitions. [2025-01-09 20:57:02,635 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1009 transitions. Word has length 14 [2025-01-09 20:57:02,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:57:02,635 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 1009 transitions. [2025-01-09 20:57:02,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2025-01-09 20:57:02,635 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1009 transitions. [2025-01-09 20:57:02,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-09 20:57:02,637 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:57:02,637 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] [2025-01-09 20:57:02,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 20:57:02,639 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:57:02,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:57:02,640 INFO L85 PathProgramCache]: Analyzing trace with hash 494823439, now seen corresponding path program 1 times [2025-01-09 20:57:02,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:57:02,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394903942] [2025-01-09 20:57:02,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:57:02,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:57:02,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-09 20:57:02,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-09 20:57:02,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:57:02,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:57:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:57:02,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:57:02,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394903942] [2025-01-09 20:57:02,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394903942] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:57:02,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:57:02,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 20:57:02,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046846039] [2025-01-09 20:57:02,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:57:02,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 20:57:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:57:02,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 20:57:02,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 20:57:02,920 INFO L87 Difference]: Start difference. First operand 688 states and 1009 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2025-01-09 20:57:03,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:57:03,031 INFO L93 Difference]: Finished difference Result 957 states and 1396 transitions. [2025-01-09 20:57:03,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 20:57:03,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 67 [2025-01-09 20:57:03,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:57:03,035 INFO L225 Difference]: With dead ends: 957 [2025-01-09 20:57:03,035 INFO L226 Difference]: Without dead ends: 604 [2025-01-09 20:57:03,036 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 [2025-01-09 20:57:03,037 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 30 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:57:03,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1394 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:57:03,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2025-01-09 20:57:03,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2025-01-09 20:57:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 595 states have (on average 1.4168067226890757) internal successors, (843), 597 states have internal predecessors, (843), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 20:57:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 855 transitions. [2025-01-09 20:57:03,062 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 855 transitions. Word has length 67 [2025-01-09 20:57:03,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:57:03,062 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 855 transitions. [2025-01-09 20:57:03,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2025-01-09 20:57:03,062 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 855 transitions. [2025-01-09 20:57:03,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-09 20:57:03,068 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:57:03,068 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] [2025-01-09 20:57:03,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 20:57:03,068 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:57:03,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:57:03,069 INFO L85 PathProgramCache]: Analyzing trace with hash -60071909, now seen corresponding path program 1 times [2025-01-09 20:57:03,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:57:03,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848189324] [2025-01-09 20:57:03,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:57:03,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:57:03,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-09 20:57:03,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-09 20:57:03,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:57:03,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:57:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:57:03,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:57:03,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848189324] [2025-01-09 20:57:03,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848189324] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:57:03,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:57:03,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 20:57:03,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663411694] [2025-01-09 20:57:03,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:57:03,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 20:57:03,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:57:03,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 20:57:03,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:57:03,661 INFO L87 Difference]: Start difference. First operand 604 states and 855 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2025-01-09 20:57:03,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:57:03,866 INFO L93 Difference]: Finished difference Result 1114 states and 1547 transitions. [2025-01-09 20:57:03,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 20:57:03,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 67 [2025-01-09 20:57:03,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:57:03,871 INFO L225 Difference]: With dead ends: 1114 [2025-01-09 20:57:03,871 INFO L226 Difference]: Without dead ends: 842 [2025-01-09 20:57:03,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 20:57:03,874 INFO L435 NwaCegarLoop]: 477 mSDtfsCounter, 461 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:57:03,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 2361 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:57:03,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2025-01-09 20:57:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 603. [2025-01-09 20:57:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 594 states have (on average 1.4158249158249159) internal successors, (841), 596 states have internal predecessors, (841), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 20:57:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 853 transitions. [2025-01-09 20:57:03,899 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 853 transitions. Word has length 67 [2025-01-09 20:57:03,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:57:03,899 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 853 transitions. [2025-01-09 20:57:03,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2025-01-09 20:57:03,900 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 853 transitions. [2025-01-09 20:57:03,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-01-09 20:57:03,901 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:57:03,902 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2025-01-09 20:57:03,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 20:57:03,902 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:57:03,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:57:03,903 INFO L85 PathProgramCache]: Analyzing trace with hash 869692128, now seen corresponding path program 1 times [2025-01-09 20:57:03,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:57:03,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821798910] [2025-01-09 20:57:03,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:57:03,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:57:03,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-01-09 20:57:03,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-01-09 20:57:03,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:57:03,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:57:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:57:04,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:57:04,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821798910] [2025-01-09 20:57:04,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821798910] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:57:04,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:57:04,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 20:57:04,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855850069] [2025-01-09 20:57:04,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:57:04,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 20:57:04,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:57:04,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 20:57:04,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 20:57:04,187 INFO L87 Difference]: Start difference. First operand 603 states and 853 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 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) [2025-01-09 20:57:04,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:57:04,281 INFO L93 Difference]: Finished difference Result 1111 states and 1563 transitions. [2025-01-09 20:57:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 20:57:04,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 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 105 [2025-01-09 20:57:04,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:57:04,286 INFO L225 Difference]: With dead ends: 1111 [2025-01-09 20:57:04,287 INFO L226 Difference]: Without dead ends: 519 [2025-01-09 20:57:04,288 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 [2025-01-09 20:57:04,289 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 30 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:57:04,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1145 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:57:04,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2025-01-09 20:57:04,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2025-01-09 20:57:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 510 states have (on average 1.3470588235294119) internal successors, (687), 512 states have internal predecessors, (687), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 20:57:04,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 699 transitions. [2025-01-09 20:57:04,311 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 699 transitions. Word has length 105 [2025-01-09 20:57:04,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:57:04,311 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 699 transitions. [2025-01-09 20:57:04,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 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) [2025-01-09 20:57:04,312 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 699 transitions. [2025-01-09 20:57:04,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-01-09 20:57:04,313 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:57:04,314 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2025-01-09 20:57:04,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 20:57:04,314 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:57:04,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:57:04,315 INFO L85 PathProgramCache]: Analyzing trace with hash -110069652, now seen corresponding path program 1 times [2025-01-09 20:57:04,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:57:04,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432529802] [2025-01-09 20:57:04,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:57:04,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:57:04,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-01-09 20:57:04,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-01-09 20:57:04,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:57:04,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:57:04,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 20:57:04,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:57:04,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432529802] [2025-01-09 20:57:04,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432529802] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 20:57:04,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060284587] [2025-01-09 20:57:04,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:57:04,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:57:04,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:57:04,840 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) [2025-01-09 20:57:04,842 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 [2025-01-09 20:57:05,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-01-09 20:57:05,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-01-09 20:57:05,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:57:05,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:57:05,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-09 20:57:05,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 20:57:05,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-09 20:57:05,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2025-01-09 20:57:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:57:06,221 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 20:57:06,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060284587] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:57:06,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 20:57:06,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2025-01-09 20:57:06,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805156396] [2025-01-09 20:57:06,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:57:06,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 20:57:06,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:57:06,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 20:57:06,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2025-01-09 20:57:06,223 INFO L87 Difference]: Start difference. First operand 519 states and 699 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:57:08,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:57:08,521 INFO L93 Difference]: Finished difference Result 1246 states and 1685 transitions. [2025-01-09 20:57:08,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 20:57:08,522 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 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 105 [2025-01-09 20:57:08,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:57:08,526 INFO L225 Difference]: With dead ends: 1246 [2025-01-09 20:57:08,526 INFO L226 Difference]: Without dead ends: 772 [2025-01-09 20:57:08,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2025-01-09 20:57:08,528 INFO L435 NwaCegarLoop]: 439 mSDtfsCounter, 501 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-01-09 20:57:08,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 3118 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-01-09 20:57:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2025-01-09 20:57:08,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 519. [2025-01-09 20:57:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 510 states have (on average 1.3450980392156864) internal successors, (686), 512 states have internal predecessors, (686), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 20:57:08,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 698 transitions. [2025-01-09 20:57:08,550 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 698 transitions. Word has length 105 [2025-01-09 20:57:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:57:08,550 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 698 transitions. [2025-01-09 20:57:08,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:57:08,550 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 698 transitions. [2025-01-09 20:57:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-01-09 20:57:08,551 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:57:08,551 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2025-01-09 20:57:08,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 20:57:08,756 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 [2025-01-09 20:57:08,756 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:57:08,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:57:08,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2090623789, now seen corresponding path program 1 times [2025-01-09 20:57:08,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:57:08,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928817554] [2025-01-09 20:57:08,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:57:08,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:57:08,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-01-09 20:57:08,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-01-09 20:57:08,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:57:08,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:57:09,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 20:57:09,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:57:09,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928817554] [2025-01-09 20:57:09,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928817554] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 20:57:09,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849896450] [2025-01-09 20:57:09,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:57:09,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:57:09,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:57:09,240 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) [2025-01-09 20:57:09,243 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 [2025-01-09 20:57:09,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-01-09 20:57:09,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-01-09 20:57:09,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:57:09,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:57:09,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 20:57:09,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 20:57:09,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-09 20:57:09,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-01-09 20:57:09,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-09 20:57:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:57:09,834 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 20:57:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:57:10,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849896450] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 20:57:10,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 20:57:10,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 7] total 11 [2025-01-09 20:57:10,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22189629] [2025-01-09 20:57:10,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:57:10,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 20:57:10,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:57:10,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 20:57:10,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-01-09 20:57:10,081 INFO L87 Difference]: Start difference. First operand 519 states and 698 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2025-01-09 20:57:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:57:10,181 INFO L93 Difference]: Finished difference Result 702 states and 946 transitions. [2025-01-09 20:57:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 20:57:10,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 106 [2025-01-09 20:57:10,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:57:10,186 INFO L225 Difference]: With dead ends: 702 [2025-01-09 20:57:10,186 INFO L226 Difference]: Without dead ends: 692 [2025-01-09 20:57:10,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-01-09 20:57:10,187 INFO L435 NwaCegarLoop]: 397 mSDtfsCounter, 664 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:57:10,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1153 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:57:10,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2025-01-09 20:57:10,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 521. [2025-01-09 20:57:10,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 512 states have (on average 1.34375) internal successors, (688), 514 states have internal predecessors, (688), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 20:57:10,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 700 transitions. [2025-01-09 20:57:10,208 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 700 transitions. Word has length 106 [2025-01-09 20:57:10,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:57:10,209 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 700 transitions. [2025-01-09 20:57:10,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2025-01-09 20:57:10,209 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 700 transitions. [2025-01-09 20:57:10,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-01-09 20:57:10,210 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:57:10,211 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2025-01-09 20:57:10,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 20:57:10,411 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 [2025-01-09 20:57:10,411 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:57:10,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:57:10,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1624453812, now seen corresponding path program 1 times [2025-01-09 20:57:10,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:57:10,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054451448] [2025-01-09 20:57:10,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:57:10,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:57:10,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-01-09 20:57:10,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-01-09 20:57:10,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:57:10,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:57:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:57:10,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:57:10,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054451448] [2025-01-09 20:57:10,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054451448] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:57:10,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:57:10,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 20:57:10,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684164940] [2025-01-09 20:57:10,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:57:10,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 20:57:10,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:57:10,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 20:57:10,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 20:57:10,692 INFO L87 Difference]: Start difference. First operand 521 states and 700 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2025-01-09 20:57:11,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:57:11,078 INFO L93 Difference]: Finished difference Result 1297 states and 1752 transitions. [2025-01-09 20:57:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 20:57:11,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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 159 [2025-01-09 20:57:11,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:57:11,083 INFO L225 Difference]: With dead ends: 1297 [2025-01-09 20:57:11,084 INFO L226 Difference]: Without dead ends: 868 [2025-01-09 20:57:11,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-01-09 20:57:11,085 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 1338 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 20:57:11,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 1124 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 20:57:11,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2025-01-09 20:57:11,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 660. [2025-01-09 20:57:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 650 states have (on average 1.3476923076923077) internal successors, (876), 653 states have internal predecessors, (876), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-01-09 20:57:11,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 890 transitions. [2025-01-09 20:57:11,112 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 890 transitions. Word has length 159 [2025-01-09 20:57:11,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:57:11,113 INFO L471 AbstractCegarLoop]: Abstraction has 660 states and 890 transitions. [2025-01-09 20:57:11,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2025-01-09 20:57:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 890 transitions. [2025-01-09 20:57:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-01-09 20:57:11,115 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:57:11,115 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2025-01-09 20:57:11,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 20:57:11,115 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:57:11,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:57:11,116 INFO L85 PathProgramCache]: Analyzing trace with hash 976541949, now seen corresponding path program 1 times [2025-01-09 20:57:11,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:57:11,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112176306] [2025-01-09 20:57:11,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:57:11,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:57:11,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-01-09 20:57:11,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-01-09 20:57:11,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:57:11,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:57:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 20:57:11,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:57:11,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112176306] [2025-01-09 20:57:11,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112176306] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 20:57:11,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359911087] [2025-01-09 20:57:11,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:57:11,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:57:11,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:57:11,582 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 20:57:11,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 20:57:11,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-01-09 20:57:11,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-01-09 20:57:11,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:57:11,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:57:11,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-09 20:57:11,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 20:57:11,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-09 20:57:12,349 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 20:57:12,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2025-01-09 20:57:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 20:57:12,539 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 20:57:12,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359911087] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:57:12,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 20:57:12,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2025-01-09 20:57:12,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058606107] [2025-01-09 20:57:12,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:57:12,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 20:57:12,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:57:12,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 20:57:12,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-01-09 20:57:12,541 INFO L87 Difference]: Start difference. First operand 660 states and 890 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 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) [2025-01-09 20:57:13,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:57:13,446 INFO L93 Difference]: Finished difference Result 1299 states and 1752 transitions. [2025-01-09 20:57:13,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 20:57:13,447 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 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 169 [2025-01-09 20:57:13,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:57:13,452 INFO L225 Difference]: With dead ends: 1299 [2025-01-09 20:57:13,452 INFO L226 Difference]: Without dead ends: 891 [2025-01-09 20:57:13,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2025-01-09 20:57:13,454 INFO L435 NwaCegarLoop]: 405 mSDtfsCounter, 395 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 20:57:13,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 2410 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 20:57:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2025-01-09 20:57:13,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 694. [2025-01-09 20:57:13,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 684 states have (on average 1.3362573099415205) internal successors, (914), 687 states have internal predecessors, (914), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-01-09 20:57:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 928 transitions. [2025-01-09 20:57:13,486 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 928 transitions. Word has length 169 [2025-01-09 20:57:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:57:13,487 INFO L471 AbstractCegarLoop]: Abstraction has 694 states and 928 transitions. [2025-01-09 20:57:13,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 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) [2025-01-09 20:57:13,487 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 928 transitions. [2025-01-09 20:57:13,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-01-09 20:57:13,489 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:57:13,489 INFO L218 NwaCegarLoop]: trace histogram [2, 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, 1] [2025-01-09 20:57:13,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 20:57:13,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:57:13,690 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:57:13,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:57:13,690 INFO L85 PathProgramCache]: Analyzing trace with hash 489963489, now seen corresponding path program 1 times [2025-01-09 20:57:13,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:57:13,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387562529] [2025-01-09 20:57:13,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:57:13,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:57:13,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-01-09 20:57:13,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-01-09 20:57:13,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:57:13,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:57:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 20:57:14,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:57:14,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387562529] [2025-01-09 20:57:14,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387562529] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 20:57:14,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537538626] [2025-01-09 20:57:14,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:57:14,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:57:14,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:57:14,094 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 20:57:14,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 20:57:14,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-01-09 20:57:14,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-01-09 20:57:14,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:57:14,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:57:14,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-09 20:57:14,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 20:57:54,895 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 20:58:06,916 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 20:58:23,800 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)