./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test1-1.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_test1-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 20:56:23,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 20:56:23,839 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 20:56:23,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 20:56:23,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 20:56:23,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 20:56:23,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 20:56:23,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 20:56:23,863 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 20:56:23,863 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 20:56:23,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 20:56:23,863 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 20:56:23,864 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 20:56:23,864 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 20:56:23,864 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 20:56:23,864 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 20:56:23,864 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 20:56:23,864 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 20:56:23,864 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 20:56:23,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 20:56:23,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 20:56:23,864 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 20:56:23,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 20:56:23,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 20:56:23,868 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 20:56:23,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 20:56:23,869 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:56:23,869 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:56:23,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 20:56:23,869 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 20:56:23,869 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 -> fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 [2025-01-09 20:56:24,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 20:56:24,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 20:56:24,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 20:56:24,092 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 20:56:24,092 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 20:56:24,092 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test1-1.i [2025-01-09 20:56:25,226 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0ae213df1/cb79682bd15745cdbd775f5364573432/FLAG75e1717d1 [2025-01-09 20:56:25,544 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 20:56:25,547 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test1-1.i [2025-01-09 20:56:25,559 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0ae213df1/cb79682bd15745cdbd775f5364573432/FLAG75e1717d1 [2025-01-09 20:56:25,572 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0ae213df1/cb79682bd15745cdbd775f5364573432 [2025-01-09 20:56:25,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 20:56:25,575 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 20:56:25,576 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 20:56:25,576 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 20:56:25,579 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 20:56:25,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:25,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d116ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25, skipping insertion in model container [2025-01-09 20:56:25,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:25,612 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 20:56:25,831 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_test1-1.i[33519,33532] [2025-01-09 20:56:25,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 20:56:25,899 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 20:56:25,919 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_test1-1.i[33519,33532] [2025-01-09 20:56:25,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 20:56:25,963 INFO L204 MainTranslator]: Completed translation [2025-01-09 20:56:25,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25 WrapperNode [2025-01-09 20:56:25,963 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 20:56:25,964 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 20:56:25,964 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 20:56:25,964 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 20:56:25,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:25,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:26,004 INFO L138 Inliner]: procedures = 176, calls = 169, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 771 [2025-01-09 20:56:26,005 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 20:56:26,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 20:56:26,005 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 20:56:26,005 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 20:56:26,014 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:26,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:26,019 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:26,048 INFO L175 MemorySlicer]: Split 158 memory accesses to 2 slices as follows [2, 156]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 42 writes are split as follows [0, 42]. [2025-01-09 20:56:26,048 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:26,048 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:26,062 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:26,063 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:26,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:26,069 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:26,070 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:26,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 20:56:26,074 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 20:56:26,074 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 20:56:26,074 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 20:56:26,075 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25" (1/1) ... [2025-01-09 20:56:26,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:56:26,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:56:26,095 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 20:56:26,101 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 20:56:26,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 20:56:26,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 20:56:26,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 20:56:26,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 20:56:26,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-01-09 20:56:26,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-01-09 20:56:26,115 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-01-09 20:56:26,115 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-01-09 20:56:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 20:56:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 20:56:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 20:56:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 20:56:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 20:56:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 20:56:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 20:56:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 20:56:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 20:56:26,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 20:56:26,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 20:56:26,219 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 20:56:26,220 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 20:56:27,326 INFO L? ?]: Removed 194 outVars from TransFormulas that were not future-live. [2025-01-09 20:56:27,327 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 20:56:27,339 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 20:56:27,340 INFO L312 CfgBuilder]: Removed 14 assume(true) statements. [2025-01-09 20:56:27,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:56:27 BoogieIcfgContainer [2025-01-09 20:56:27,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 20:56:27,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 20:56:27,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 20:56:27,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 20:56:27,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 08:56:25" (1/3) ... [2025-01-09 20:56:27,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce99979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 08:56:27, skipping insertion in model container [2025-01-09 20:56:27,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:56:25" (2/3) ... [2025-01-09 20:56:27,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce99979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 08:56:27, skipping insertion in model container [2025-01-09 20:56:27,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:56:27" (3/3) ... [2025-01-09 20:56:27,347 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test1-1.i [2025-01-09 20:56:27,356 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 20:56:27,359 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_nondet_test1-1.i that has 3 procedures, 211 locations, 1 initial locations, 20 loop locations, and 1 error locations. [2025-01-09 20:56:27,405 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 20:56:27,415 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;@34e907c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 20:56:27,416 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 20:56:27,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 201 states have (on average 1.5970149253731343) internal successors, (321), 202 states have internal predecessors, (321), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 20:56:27,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 20:56:27,424 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:56:27,424 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 20:56:27,424 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:56:27,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:56:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1385564586, now seen corresponding path program 1 times [2025-01-09 20:56:27,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:56:27,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541166279] [2025-01-09 20:56:27,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:56:27,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:56:27,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 20:56:27,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 20:56:27,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:56:27,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:56:27,570 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 20:56:27,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:56:27,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541166279] [2025-01-09 20:56:27,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541166279] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:56:27,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:56:27,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 20:56:27,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795920200] [2025-01-09 20:56:27,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:56:27,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 20:56:27,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:56:27,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 20:56:27,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 20:56:27,594 INFO L87 Difference]: Start difference. First operand has 207 states, 201 states have (on average 1.5970149253731343) internal successors, (321), 202 states have internal predecessors, (321), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:56:27,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:56:27,693 INFO L93 Difference]: Finished difference Result 605 states and 964 transitions. [2025-01-09 20:56:27,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 20:56:27,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-01-09 20:56:27,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:56:27,707 INFO L225 Difference]: With dead ends: 605 [2025-01-09 20:56:27,708 INFO L226 Difference]: Without dead ends: 396 [2025-01-09 20:56:27,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 20:56:27,711 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 273 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 20:56:27,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 581 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 20:56:27,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2025-01-09 20:56:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 204. [2025-01-09 20:56:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.4371859296482412) internal successors, (286), 199 states have internal predecessors, (286), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 20:56:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 292 transitions. [2025-01-09 20:56:27,760 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 292 transitions. Word has length 6 [2025-01-09 20:56:27,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:56:27,760 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 292 transitions. [2025-01-09 20:56:27,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:56:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 292 transitions. [2025-01-09 20:56:27,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-01-09 20:56:27,762 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:56:27,763 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:56:27,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 20:56:27,763 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:56:27,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:56:27,763 INFO L85 PathProgramCache]: Analyzing trace with hash 933104777, now seen corresponding path program 1 times [2025-01-09 20:56:27,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:56:27,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240531494] [2025-01-09 20:56:27,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:56:27,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:56:27,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-01-09 20:56:27,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-01-09 20:56:27,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:56:27,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:56:28,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:56:28,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:56:28,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240531494] [2025-01-09 20:56:28,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240531494] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:56:28,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:56:28,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 20:56:28,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568135198] [2025-01-09 20:56:28,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:56:28,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 20:56:28,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:56:28,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 20:56:28,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 20:56:28,076 INFO L87 Difference]: Start difference. First operand 204 states and 292 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:56:28,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:56:28,136 INFO L93 Difference]: Finished difference Result 408 states and 584 transitions. [2025-01-09 20:56:28,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 20:56:28,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2025-01-09 20:56:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:56:28,138 INFO L225 Difference]: With dead ends: 408 [2025-01-09 20:56:28,138 INFO L226 Difference]: Without dead ends: 207 [2025-01-09 20:56:28,139 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 20:56:28,139 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 105 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 20:56:28,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 699 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 20:56:28,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2025-01-09 20:56:28,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 204. [2025-01-09 20:56:28,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.4020100502512562) internal successors, (279), 199 states have internal predecessors, (279), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 20:56:28,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 285 transitions. [2025-01-09 20:56:28,146 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 285 transitions. Word has length 80 [2025-01-09 20:56:28,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:56:28,147 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 285 transitions. [2025-01-09 20:56:28,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:56:28,147 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 285 transitions. [2025-01-09 20:56:28,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-01-09 20:56:28,148 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:56:28,148 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:56:28,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 20:56:28,149 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:56:28,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:56:28,149 INFO L85 PathProgramCache]: Analyzing trace with hash -108174059, now seen corresponding path program 1 times [2025-01-09 20:56:28,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:56:28,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786938785] [2025-01-09 20:56:28,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:56:28,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:56:28,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-01-09 20:56:28,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-01-09 20:56:28,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:56:28,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:56:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:56:28,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:56:28,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786938785] [2025-01-09 20:56:28,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786938785] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:56:28,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:56:28,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 20:56:28,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951850657] [2025-01-09 20:56:28,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:56:28,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 20:56:28,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:56:28,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 20:56:28,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 20:56:28,357 INFO L87 Difference]: Start difference. First operand 204 states and 285 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:56:28,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:56:28,396 INFO L93 Difference]: Finished difference Result 533 states and 755 transitions. [2025-01-09 20:56:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 20:56:28,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2025-01-09 20:56:28,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:56:28,399 INFO L225 Difference]: With dead ends: 533 [2025-01-09 20:56:28,399 INFO L226 Difference]: Without dead ends: 332 [2025-01-09 20:56:28,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 20:56:28,400 INFO L435 NwaCegarLoop]: 283 mSDtfsCounter, 134 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 20:56:28,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 558 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 20:56:28,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2025-01-09 20:56:28,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2025-01-09 20:56:28,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 327 states have (on average 1.4250764525993884) internal successors, (466), 327 states have internal predecessors, (466), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 20:56:28,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 472 transitions. [2025-01-09 20:56:28,410 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 472 transitions. Word has length 80 [2025-01-09 20:56:28,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:56:28,410 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 472 transitions. [2025-01-09 20:56:28,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:56:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 472 transitions. [2025-01-09 20:56:28,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-01-09 20:56:28,412 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:56:28,412 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:56:28,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 20:56:28,412 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:56:28,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:56:28,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1129666403, now seen corresponding path program 1 times [2025-01-09 20:56:28,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:56:28,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588634375] [2025-01-09 20:56:28,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:56:28,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:56:28,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-01-09 20:56:28,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-01-09 20:56:28,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:56:28,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:56:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:56:28,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:56:28,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588634375] [2025-01-09 20:56:28,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588634375] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 20:56:28,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63935773] [2025-01-09 20:56:28,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:56:28,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:56:28,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:56:28,664 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 20:56:28,665 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 20:56:28,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-01-09 20:56:28,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-01-09 20:56:28,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:56:28,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:56:28,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 20:56:28,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 20:56:29,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:56:29,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 20:56:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:56:29,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63935773] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 20:56:29,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 20:56:29,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-09 20:56:29,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252377650] [2025-01-09 20:56:29,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 20:56:29,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 20:56:29,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:56:29,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 20:56:29,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:56:29,193 INFO L87 Difference]: Start difference. First operand 332 states and 472 transitions. Second operand has 7 states, 7 states have (on average 35.57142857142857) internal successors, (249), 7 states have internal predecessors, (249), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 20:56:29,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:56:29,282 INFO L93 Difference]: Finished difference Result 785 states and 1108 transitions. [2025-01-09 20:56:29,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 20:56:29,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.57142857142857) internal successors, (249), 7 states have internal predecessors, (249), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 95 [2025-01-09 20:56:29,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:56:29,286 INFO L225 Difference]: With dead ends: 785 [2025-01-09 20:56:29,288 INFO L226 Difference]: Without dead ends: 781 [2025-01-09 20:56:29,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:56:29,289 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 1236 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 20:56:29,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 1449 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 20:56:29,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2025-01-09 20:56:29,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2025-01-09 20:56:29,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 767 states have (on average 1.4041720990873534) internal successors, (1077), 767 states have internal predecessors, (1077), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-01-09 20:56:29,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1101 transitions. [2025-01-09 20:56:29,323 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1101 transitions. Word has length 95 [2025-01-09 20:56:29,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:56:29,324 INFO L471 AbstractCegarLoop]: Abstraction has 781 states and 1101 transitions. [2025-01-09 20:56:29,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.57142857142857) internal successors, (249), 7 states have internal predecessors, (249), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 20:56:29,325 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1101 transitions. [2025-01-09 20:56:29,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2025-01-09 20:56:29,339 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:56:29,340 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:56:29,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 20:56:29,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:56:29,541 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:56:29,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:56:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1277029724, now seen corresponding path program 1 times [2025-01-09 20:56:29,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:56:29,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164489299] [2025-01-09 20:56:29,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:56:29,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:56:29,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-01-09 20:56:29,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-01-09 20:56:29,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:56:29,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:56:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 4 proven. 159 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2025-01-09 20:56:30,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:56:30,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164489299] [2025-01-09 20:56:30,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164489299] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 20:56:30,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237812292] [2025-01-09 20:56:30,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:56:30,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:56:30,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:56:30,184 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 20:56:30,186 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 20:56:30,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-01-09 20:56:30,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-01-09 20:56:30,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:56:30,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:56:30,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 20:56:30,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 20:56:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:56:31,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 20:56:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:56:31,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237812292] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 20:56:31,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 20:56:31,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2025-01-09 20:56:31,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5897887] [2025-01-09 20:56:31,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 20:56:31,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 20:56:31,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:56:31,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 20:56:31,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2025-01-09 20:56:31,441 INFO L87 Difference]: Start difference. First operand 781 states and 1101 transitions. Second operand has 14 states, 14 states have (on average 53.642857142857146) internal successors, (751), 14 states have internal predecessors, (751), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 20:56:32,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:56:32,367 INFO L93 Difference]: Finished difference Result 2316 states and 3286 transitions. [2025-01-09 20:56:32,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 20:56:32,368 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 53.642857142857146) internal successors, (751), 14 states have internal predecessors, (751), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 317 [2025-01-09 20:56:32,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:56:32,374 INFO L225 Difference]: With dead ends: 2316 [2025-01-09 20:56:32,374 INFO L226 Difference]: Without dead ends: 1859 [2025-01-09 20:56:32,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=238, Invalid=412, Unknown=0, NotChecked=0, Total=650 [2025-01-09 20:56:32,376 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 6909 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6909 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 20:56:32,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6909 Valid, 2871 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 20:56:32,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2025-01-09 20:56:32,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1859. [2025-01-09 20:56:32,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1845 states have (on average 1.413550135501355) internal successors, (2608), 1845 states have internal predecessors, (2608), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-01-09 20:56:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2632 transitions. [2025-01-09 20:56:32,411 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2632 transitions. Word has length 317 [2025-01-09 20:56:32,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:56:32,412 INFO L471 AbstractCegarLoop]: Abstraction has 1859 states and 2632 transitions. [2025-01-09 20:56:32,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 53.642857142857146) internal successors, (751), 14 states have internal predecessors, (751), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 20:56:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2632 transitions. [2025-01-09 20:56:32,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2025-01-09 20:56:32,422 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:56:32,422 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:56:32,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 20:56:32,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:56:32,623 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:56:32,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:56:32,623 INFO L85 PathProgramCache]: Analyzing trace with hash 289845691, now seen corresponding path program 1 times [2025-01-09 20:56:32,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:56:32,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128510106] [2025-01-09 20:56:32,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:56:32,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:56:32,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 762 statements into 1 equivalence classes.