./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_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 a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 05:00:35,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 05:00:36,065 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 05:00:36,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 05:00:36,075 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 05:00:36,104 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 05:00:36,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 05:00:36,106 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 05:00:36,106 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 05:00:36,107 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 05:00:36,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 05:00:36,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 05:00:36,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 05:00:36,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 05:00:36,109 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 05:00:36,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 05:00:36,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 05:00:36,109 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 05:00:36,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 05:00:36,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 05:00:36,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 05:00:36,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 05:00:36,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 05:00:36,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 05:00:36,110 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 05:00:36,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 05:00:36,110 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 05:00:36,110 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 05:00:36,111 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 05:00:36,111 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 05:00:36,111 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 05:00:36,111 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 05:00:36,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 05:00:36,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 05:00:36,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 05:00:36,112 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 05:00:36,112 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 05:00:36,112 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 05:00:36,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 05:00:36,112 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 05:00:36,112 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 05:00:36,112 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 05:00:36,112 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 05:00:36,113 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 -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2025-02-08 05:00:36,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 05:00:36,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 05:00:36,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 05:00:36,446 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 05:00:36,446 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 05:00:36,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2025-02-08 05:00:37,817 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0201b543e/6f7b24abf98a49ff9c5f1f7c5377c95b/FLAGde9a4b8d7 [2025-02-08 05:00:38,178 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 05:00:38,178 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2025-02-08 05:00:38,194 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0201b543e/6f7b24abf98a49ff9c5f1f7c5377c95b/FLAGde9a4b8d7 [2025-02-08 05:00:38,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0201b543e/6f7b24abf98a49ff9c5f1f7c5377c95b [2025-02-08 05:00:38,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 05:00:38,221 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 05:00:38,223 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 05:00:38,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 05:00:38,227 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 05:00:38,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 05:00:38" (1/1) ... [2025-02-08 05:00:38,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28213580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:38, skipping insertion in model container [2025-02-08 05:00:38,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 05:00:38" (1/1) ... [2025-02-08 05:00:38,272 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 05:00:38,739 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_SAX_test1-1.i[33021,33034] [2025-02-08 05:00:38,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 05:00:38,856 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 05:00:38,907 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_SAX_test1-1.i[33021,33034] [2025-02-08 05:00:38,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 05:00:39,003 INFO L204 MainTranslator]: Completed translation [2025-02-08 05:00:39,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:39 WrapperNode [2025-02-08 05:00:39,004 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 05:00:39,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 05:00:39,006 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 05:00:39,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 05:00:39,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:39" (1/1) ... [2025-02-08 05:00:39,043 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:39" (1/1) ... [2025-02-08 05:00:39,095 INFO L138 Inliner]: procedures = 176, calls = 179, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 812 [2025-02-08 05:00:39,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 05:00:39,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 05:00:39,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 05:00:39,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 05:00:39,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:39" (1/1) ... [2025-02-08 05:00:39,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:39" (1/1) ... [2025-02-08 05:00:39,122 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:39" (1/1) ... [2025-02-08 05:00:39,171 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]. [2025-02-08 05:00:39,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:39" (1/1) ... [2025-02-08 05:00:39,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:39" (1/1) ... [2025-02-08 05:00:39,193 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:39" (1/1) ... [2025-02-08 05:00:39,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:39" (1/1) ... [2025-02-08 05:00:39,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:39" (1/1) ... [2025-02-08 05:00:39,202 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:39" (1/1) ... [2025-02-08 05:00:39,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 05:00:39,209 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 05:00:39,209 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 05:00:39,209 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 05:00:39,210 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:39" (1/1) ... [2025-02-08 05:00:39,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 05:00:39,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:00:39,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 05:00:39,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 05:00:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 05:00:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 05:00:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 05:00:39,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 05:00:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 05:00:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 05:00:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 05:00:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 05:00:39,299 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 05:00:39,299 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 05:00:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 05:00:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 05:00:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 05:00:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 05:00:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 05:00:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 05:00:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 05:00:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 05:00:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 05:00:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 05:00:39,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 05:00:39,485 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 05:00:39,487 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 05:00:40,753 INFO L? ?]: Removed 205 outVars from TransFormulas that were not future-live. [2025-02-08 05:00:40,754 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 05:00:40,797 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 05:00:40,798 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-08 05:00:40,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 05:00:40 BoogieIcfgContainer [2025-02-08 05:00:40,798 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 05:00:40,801 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 05:00:40,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 05:00:40,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 05:00:40,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 05:00:38" (1/3) ... [2025-02-08 05:00:40,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8164cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 05:00:40, skipping insertion in model container [2025-02-08 05:00:40,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:00:39" (2/3) ... [2025-02-08 05:00:40,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8164cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 05:00:40, skipping insertion in model container [2025-02-08 05:00:40,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 05:00:40" (3/3) ... [2025-02-08 05:00:40,810 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-1.i [2025-02-08 05:00:40,825 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 05:00:40,827 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_test1-1.i that has 4 procedures, 231 locations, 1 initial locations, 20 loop locations, and 1 error locations. [2025-02-08 05:00:40,891 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 05:00:40,904 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;@7bf1c60a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 05:00:40,906 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 05:00:40,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 209 states have (on average 1.6220095693779903) internal successors, (339), 220 states have internal predecessors, (339), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 05:00:40,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 05:00:40,919 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:00:40,920 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:00:40,920 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:00:40,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:00:40,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1527101379, now seen corresponding path program 1 times [2025-02-08 05:00:40,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:00:40,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209270214] [2025-02-08 05:00:40,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:00:40,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:00:41,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 05:00:41,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 05:00:41,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:00:41,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:00:41,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:00:41,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:00:41,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209270214] [2025-02-08 05:00:41,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209270214] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:00:41,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:00:41,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 05:00:41,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915819534] [2025-02-08 05:00:41,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:00:41,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 05:00:41,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:00:41,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 05:00:41,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:00:41,180 INFO L87 Difference]: Start difference. First operand has 227 states, 209 states have (on average 1.6220095693779903) internal successors, (339), 220 states have internal predecessors, (339), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:00:41,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:00:41,394 INFO L93 Difference]: Finished difference Result 645 states and 1050 transitions. [2025-02-08 05:00:41,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 05:00:41,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-08 05:00:41,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:00:41,413 INFO L225 Difference]: With dead ends: 645 [2025-02-08 05:00:41,413 INFO L226 Difference]: Without dead ends: 414 [2025-02-08 05:00:41,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:00:41,424 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 272 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 05:00:41,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 613 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 05:00:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2025-02-08 05:00:41,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 223. [2025-02-08 05:00:41,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 208 states have (on average 1.4615384615384615) internal successors, (304), 217 states have internal predecessors, (304), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 05:00:41,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 320 transitions. [2025-02-08 05:00:41,493 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 320 transitions. Word has length 8 [2025-02-08 05:00:41,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:00:41,495 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 320 transitions. [2025-02-08 05:00:41,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:00:41,495 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 320 transitions. [2025-02-08 05:00:41,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-02-08 05:00:41,499 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:00:41,499 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:00:41,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 05:00:41,499 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:00:41,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:00:41,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1457076233, now seen corresponding path program 1 times [2025-02-08 05:00:41,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:00:41,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355295787] [2025-02-08 05:00:41,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:00:41,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:00:41,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-02-08 05:00:41,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-02-08 05:00:41,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:00:41,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:00:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:00:42,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:00:42,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355295787] [2025-02-08 05:00:42,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355295787] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:00:42,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:00:42,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 05:00:42,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119304760] [2025-02-08 05:00:42,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:00:42,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 05:00:42,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:00:42,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 05:00:42,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 05:00:42,087 INFO L87 Difference]: Start difference. First operand 223 states and 320 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:00:42,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:00:42,250 INFO L93 Difference]: Finished difference Result 447 states and 641 transitions. [2025-02-08 05:00:42,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 05:00:42,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 82 [2025-02-08 05:00:42,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:00:42,253 INFO L225 Difference]: With dead ends: 447 [2025-02-08 05:00:42,254 INFO L226 Difference]: Without dead ends: 226 [2025-02-08 05:00:42,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 05:00:42,258 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 105 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 05:00:42,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 726 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 05:00:42,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2025-02-08 05:00:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 223. [2025-02-08 05:00:42,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 208 states have (on average 1.4278846153846154) internal successors, (297), 217 states have internal predecessors, (297), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 05:00:42,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 313 transitions. [2025-02-08 05:00:42,283 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 313 transitions. Word has length 82 [2025-02-08 05:00:42,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:00:42,284 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 313 transitions. [2025-02-08 05:00:42,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:00:42,284 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 313 transitions. [2025-02-08 05:00:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-02-08 05:00:42,287 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:00:42,288 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:00:42,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 05:00:42,288 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:00:42,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:00:42,289 INFO L85 PathProgramCache]: Analyzing trace with hash 429836977, now seen corresponding path program 1 times [2025-02-08 05:00:42,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:00:42,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767487723] [2025-02-08 05:00:42,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:00:42,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:00:42,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-02-08 05:00:42,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-02-08 05:00:42,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:00:42,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:00:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:00:42,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:00:42,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767487723] [2025-02-08 05:00:42,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767487723] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:00:42,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:00:42,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 05:00:42,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403134331] [2025-02-08 05:00:42,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:00:42,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 05:00:42,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:00:42,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 05:00:42,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:00:42,573 INFO L87 Difference]: Start difference. First operand 223 states and 313 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:00:42,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:00:42,687 INFO L93 Difference]: Finished difference Result 572 states and 812 transitions. [2025-02-08 05:00:42,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 05:00:42,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 82 [2025-02-08 05:00:42,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:00:42,690 INFO L225 Difference]: With dead ends: 572 [2025-02-08 05:00:42,690 INFO L226 Difference]: Without dead ends: 351 [2025-02-08 05:00:42,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:00:42,696 INFO L435 NwaCegarLoop]: 289 mSDtfsCounter, 134 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 05:00:42,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 570 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 05:00:42,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2025-02-08 05:00:42,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2025-02-08 05:00:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 336 states have (on average 1.4404761904761905) internal successors, (484), 345 states have internal predecessors, (484), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 05:00:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 500 transitions. [2025-02-08 05:00:42,731 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 500 transitions. Word has length 82 [2025-02-08 05:00:42,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:00:42,732 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 500 transitions. [2025-02-08 05:00:42,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:00:42,733 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 500 transitions. [2025-02-08 05:00:42,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-08 05:00:42,736 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:00:42,736 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:00:42,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 05:00:42,736 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:00:42,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:00:42,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1350640802, now seen corresponding path program 1 times [2025-02-08 05:00:42,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:00:42,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120092739] [2025-02-08 05:00:42,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:00:42,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:00:42,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-08 05:00:42,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 05:00:42,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:00:42,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:00:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:00:43,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:00:43,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120092739] [2025-02-08 05:00:43,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120092739] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:00:43,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685485226] [2025-02-08 05:00:43,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:00:43,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:00:43,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:00:43,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 05:00:43,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 05:00:43,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-08 05:00:43,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 05:00:43,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:00:43,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:00:43,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 05:00:43,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 05:00:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:00:43,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 05:00:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:00:43,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685485226] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 05:00:43,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 05:00:43,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-08 05:00:43,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007167271] [2025-02-08 05:00:43,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 05:00:43,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 05:00:43,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:00:43,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 05:00:43,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 05:00:43,872 INFO L87 Difference]: Start difference. First operand 351 states and 500 transitions. Second operand has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 7 states have internal predecessors, (250), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 05:00:44,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:00:44,126 INFO L93 Difference]: Finished difference Result 822 states and 1163 transitions. [2025-02-08 05:00:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 05:00:44,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 7 states have internal predecessors, (250), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 97 [2025-02-08 05:00:44,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:00:44,133 INFO L225 Difference]: With dead ends: 822 [2025-02-08 05:00:44,134 INFO L226 Difference]: Without dead ends: 797 [2025-02-08 05:00:44,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 05:00:44,137 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 1231 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 05:00:44,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 1374 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 05:00:44,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2025-02-08 05:00:44,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797. [2025-02-08 05:00:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 773 states have (on average 1.4126778783958602) internal successors, (1092), 782 states have internal predecessors, (1092), 22 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 05:00:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1126 transitions. [2025-02-08 05:00:44,179 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1126 transitions. Word has length 97 [2025-02-08 05:00:44,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:00:44,180 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1126 transitions. [2025-02-08 05:00:44,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 7 states have internal predecessors, (250), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 05:00:44,181 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1126 transitions. [2025-02-08 05:00:44,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2025-02-08 05:00:44,190 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:00:44,191 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, 1, 1] [2025-02-08 05:00:44,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 05:00:44,395 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 [2025-02-08 05:00:44,396 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:00:44,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:00:44,397 INFO L85 PathProgramCache]: Analyzing trace with hash 455620602, now seen corresponding path program 1 times [2025-02-08 05:00:44,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:00:44,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48818169] [2025-02-08 05:00:44,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:00:44,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:00:44,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 319 statements into 1 equivalence classes. [2025-02-08 05:00:44,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 319 of 319 statements. [2025-02-08 05:00:44,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:00:44,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:00:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:00:45,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:00:45,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48818169] [2025-02-08 05:00:45,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48818169] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:00:45,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587230634] [2025-02-08 05:00:45,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:00:45,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:00:45,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:00:45,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 05:00:45,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 05:00:45,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 319 statements into 1 equivalence classes. [2025-02-08 05:00:46,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 319 of 319 statements. [2025-02-08 05:00:46,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:00:46,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:00:46,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 05:00:46,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 05:00:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:00:46,610 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 05:00:47,080 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:00:47,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587230634] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 05:00:47,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 05:00:47,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-08 05:00:47,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183845192] [2025-02-08 05:00:47,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 05:00:47,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 05:00:47,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:00:47,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 05:00:47,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-08 05:00:47,085 INFO L87 Difference]: Start difference. First operand 797 states and 1126 transitions. Second operand has 13 states, 13 states have (on average 53.38461538461539) internal successors, (694), 13 states have internal predecessors, (694), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 05:00:47,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:00:47,677 INFO L93 Difference]: Finished difference Result 1974 states and 2798 transitions. [2025-02-08 05:00:47,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 05:00:47,678 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 53.38461538461539) internal successors, (694), 13 states have internal predecessors, (694), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 319 [2025-02-08 05:00:47,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:00:47,689 INFO L225 Difference]: With dead ends: 1974 [2025-02-08 05:00:47,689 INFO L226 Difference]: Without dead ends: 1949 [2025-02-08 05:00:47,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 632 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-08 05:00:47,692 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 3437 mSDsluCounter, 2749 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3463 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 05:00:47,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3463 Valid, 3075 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 05:00:47,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2025-02-08 05:00:47,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1949. [2025-02-08 05:00:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1907 states have (on average 1.4095437860513895) internal successors, (2688), 1916 states have internal predecessors, (2688), 40 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2025-02-08 05:00:47,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 2758 transitions. [2025-02-08 05:00:47,772 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 2758 transitions. Word has length 319 [2025-02-08 05:00:47,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:00:47,774 INFO L471 AbstractCegarLoop]: Abstraction has 1949 states and 2758 transitions. [2025-02-08 05:00:47,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 53.38461538461539) internal successors, (694), 13 states have internal predecessors, (694), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 05:00:47,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 2758 transitions. [2025-02-08 05:00:47,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2025-02-08 05:00:47,813 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:00:47,814 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, 1] [2025-02-08 05:00:47,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 05:00:48,018 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 [2025-02-08 05:00:48,019 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:00:48,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:00:48,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2066356686, now seen corresponding path program 2 times [2025-02-08 05:00:48,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:00:48,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205534918] [2025-02-08 05:00:48,020 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 05:00:48,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:00:48,282 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 763 statements into 2 equivalence classes. [2025-02-08 05:02:02,774 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 763 of 763 statements. [2025-02-08 05:02:02,775 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 05:02:02,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:02:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 487 proven. 3 refuted. 0 times theorem prover too weak. 2836 trivial. 0 not checked. [2025-02-08 05:02:04,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:02:04,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205534918] [2025-02-08 05:02:04,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205534918] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:02:04,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376014959] [2025-02-08 05:02:04,169 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 05:02:04,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:02:04,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:02:04,173 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) [2025-02-08 05:02:04,174 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 [2025-02-08 05:02:04,775 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 763 statements into 2 equivalence classes.