./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 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 10:33:31,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 10:33:31,080 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 10:33:31,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 10:33:31,086 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 10:33:31,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 10:33:31,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 10:33:31,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 10:33:31,102 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 10:33:31,103 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 10:33:31,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 10:33:31,104 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 10:33:31,104 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 10:33:31,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 10:33:31,104 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 10:33:31,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 10:33:31,104 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 10:33:31,104 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 10:33:31,104 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 10:33:31,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 10:33:31,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 10:33:31,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 10:33:31,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 10:33:31,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 10:33:31,104 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 10:33:31,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 10:33:31,104 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 10:33:31,105 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:33:31,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 10:33:31,105 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2025-03-17 10:33:31,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 10:33:31,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 10:33:31,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 10:33:31,334 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 10:33:31,334 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 10:33:31,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2025-03-17 10:33:32,447 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d4ba278d/907c20a13c93482c97205b8cfc8517d2/FLAGc7071c90f [2025-03-17 10:33:32,734 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 10:33:32,734 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2025-03-17 10:33:32,750 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d4ba278d/907c20a13c93482c97205b8cfc8517d2/FLAGc7071c90f [2025-03-17 10:33:33,009 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d4ba278d/907c20a13c93482c97205b8cfc8517d2 [2025-03-17 10:33:33,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 10:33:33,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 10:33:33,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 10:33:33,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 10:33:33,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 10:33:33,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:33:33" (1/1) ... [2025-03-17 10:33:33,020 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d408809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33, skipping insertion in model container [2025-03-17 10:33:33,020 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:33:33" (1/1) ... [2025-03-17 10:33:33,054 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 10:33:33,338 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2025-03-17 10:33:33,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:33:33,437 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 10:33:33,459 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2025-03-17 10:33:33,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:33:33,524 INFO L204 MainTranslator]: Completed translation [2025-03-17 10:33:33,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33 WrapperNode [2025-03-17 10:33:33,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 10:33:33,526 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 10:33:33,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 10:33:33,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 10:33:33,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33" (1/1) ... [2025-03-17 10:33:33,545 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33" (1/1) ... [2025-03-17 10:33:33,584 INFO L138 Inliner]: procedures = 176, calls = 179, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 812 [2025-03-17 10:33:33,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 10:33:33,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 10:33:33,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 10:33:33,588 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 10:33:33,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33" (1/1) ... [2025-03-17 10:33:33,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33" (1/1) ... [2025-03-17 10:33:33,604 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33" (1/1) ... [2025-03-17 10:33:33,636 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]. [2025-03-17 10:33:33,636 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33" (1/1) ... [2025-03-17 10:33:33,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33" (1/1) ... [2025-03-17 10:33:33,659 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33" (1/1) ... [2025-03-17 10:33:33,661 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33" (1/1) ... [2025-03-17 10:33:33,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33" (1/1) ... [2025-03-17 10:33:33,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33" (1/1) ... [2025-03-17 10:33:33,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 10:33:33,672 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 10:33:33,672 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 10:33:33,672 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 10:33:33,673 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33" (1/1) ... [2025-03-17 10:33:33,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:33:33,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:33:33,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 10:33:33,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 10:33:33,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 10:33:33,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 10:33:33,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 10:33:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 10:33:33,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 10:33:33,859 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 10:33:33,860 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 10:33:34,590 INFO L? ?]: Removed 206 outVars from TransFormulas that were not future-live. [2025-03-17 10:33:34,590 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 10:33:34,615 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 10:33:34,616 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-17 10:33:34,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:33:34 BoogieIcfgContainer [2025-03-17 10:33:34,617 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 10:33:34,619 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 10:33:34,619 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 10:33:34,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 10:33:34,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 10:33:33" (1/3) ... [2025-03-17 10:33:34,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2b88a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:33:34, skipping insertion in model container [2025-03-17 10:33:34,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:33:33" (2/3) ... [2025-03-17 10:33:34,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2b88a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:33:34, skipping insertion in model container [2025-03-17 10:33:34,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:33:34" (3/3) ... [2025-03-17 10:33:34,624 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-1.i [2025-03-17 10:33:34,634 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 10:33:34,635 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_test1-1.i that has 4 procedures, 230 locations, 1 initial locations, 19 loop locations, and 1 error locations. [2025-03-17 10:33:34,677 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:33:34,685 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;@232a90b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:33:34,685 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 10:33:34,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 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) [2025-03-17 10:33:34,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-17 10:33:34,691 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:33:34,691 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:33:34,692 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:33:34,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:33:34,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1634872674, now seen corresponding path program 1 times [2025-03-17 10:33:34,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:33:34,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839814989] [2025-03-17 10:33:34,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:33:34,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:33:34,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 10:33:34,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 10:33:34,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:33:34,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:33:34,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:33:34,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:33:34,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839814989] [2025-03-17 10:33:34,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839814989] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:33:34,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:33:34,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:33:34,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665094223] [2025-03-17 10:33:34,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:33:34,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:33:34,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:33:34,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:33:34,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:33:34,861 INFO L87 Difference]: Start difference. First operand has 226 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) [2025-03-17 10:33:34,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:33:34,961 INFO L93 Difference]: Finished difference Result 642 states and 1049 transitions. [2025-03-17 10:33:34,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:33:34,963 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 [2025-03-17 10:33:34,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:33:34,973 INFO L225 Difference]: With dead ends: 642 [2025-03-17 10:33:34,974 INFO L226 Difference]: Without dead ends: 415 [2025-03-17 10:33:34,978 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 [2025-03-17 10:33:34,980 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 271 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 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 [2025-03-17 10:33:34,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 613 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:33:34,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2025-03-17 10:33:35,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 225. [2025-03-17 10:33:35,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 209 states have (on average 1.4641148325358853) internal successors, (306), 219 states have internal predecessors, (306), 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) [2025-03-17 10:33:35,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 332 transitions. [2025-03-17 10:33:35,031 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 332 transitions. Word has length 8 [2025-03-17 10:33:35,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:33:35,031 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 332 transitions. [2025-03-17 10:33:35,031 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) [2025-03-17 10:33:35,031 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 332 transitions. [2025-03-17 10:33:35,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-17 10:33:35,036 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:33:35,036 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] [2025-03-17 10:33:35,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 10:33:35,036 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:33:35,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:33:35,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1028322362, now seen corresponding path program 1 times [2025-03-17 10:33:35,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:33:35,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955144370] [2025-03-17 10:33:35,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:33:35,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:33:35,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-17 10:33:35,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-17 10:33:35,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:33:35,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:33:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:33:35,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:33:35,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955144370] [2025-03-17 10:33:35,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955144370] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:33:35,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:33:35,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:33:35,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370204723] [2025-03-17 10:33:35,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:33:35,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:33:35,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:33:35,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:33:35,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:33:35,391 INFO L87 Difference]: Start difference. First operand 225 states and 332 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:33:35,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:33:35,508 INFO L93 Difference]: Finished difference Result 451 states and 665 transitions. [2025-03-17 10:33:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 10:33:35,510 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), 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 81 [2025-03-17 10:33:35,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:33:35,511 INFO L225 Difference]: With dead ends: 451 [2025-03-17 10:33:35,511 INFO L226 Difference]: Without dead ends: 228 [2025-03-17 10:33:35,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 10:33:35,512 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 105 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 762 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 [2025-03-17 10:33:35,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 762 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:33:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-03-17 10:33:35,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2025-03-17 10:33:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 209 states have (on average 1.430622009569378) internal successors, (299), 219 states have internal predecessors, (299), 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) [2025-03-17 10:33:35,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 325 transitions. [2025-03-17 10:33:35,523 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 325 transitions. Word has length 81 [2025-03-17 10:33:35,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:33:35,523 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 325 transitions. [2025-03-17 10:33:35,523 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:33:35,523 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 325 transitions. [2025-03-17 10:33:35,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-17 10:33:35,527 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:33:35,527 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] [2025-03-17 10:33:35,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 10:33:35,528 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:33:35,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:33:35,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1316089249, now seen corresponding path program 1 times [2025-03-17 10:33:35,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:33:35,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523093920] [2025-03-17 10:33:35,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:33:35,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:33:35,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-17 10:33:35,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-17 10:33:35,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:33:35,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:33:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:33:35,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:33:35,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523093920] [2025-03-17 10:33:35,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523093920] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:33:35,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:33:35,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 10:33:35,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167061315] [2025-03-17 10:33:35,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:33:35,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:33:35,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:33:35,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:33:35,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:33:35,716 INFO L87 Difference]: Start difference. First operand 225 states and 325 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:33:35,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:33:35,790 INFO L93 Difference]: Finished difference Result 454 states and 657 transitions. [2025-03-17 10:33:35,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:33:35,790 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), 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 81 [2025-03-17 10:33:35,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:33:35,791 INFO L225 Difference]: With dead ends: 454 [2025-03-17 10:33:35,791 INFO L226 Difference]: Without dead ends: 231 [2025-03-17 10:33:35,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:33:35,793 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 1 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:33:35,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 570 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:33:35,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-03-17 10:33:35,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2025-03-17 10:33:35,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 215 states have (on average 1.4186046511627908) internal successors, (305), 225 states have internal predecessors, (305), 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) [2025-03-17 10:33:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 331 transitions. [2025-03-17 10:33:35,800 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 331 transitions. Word has length 81 [2025-03-17 10:33:35,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:33:35,800 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 331 transitions. [2025-03-17 10:33:35,800 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:33:35,800 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 331 transitions. [2025-03-17 10:33:35,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-17 10:33:35,801 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:33:35,801 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] [2025-03-17 10:33:35,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 10:33:35,802 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:33:35,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:33:35,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1754098752, now seen corresponding path program 1 times [2025-03-17 10:33:35,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:33:35,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354447618] [2025-03-17 10:33:35,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:33:35,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:33:35,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-17 10:33:35,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-17 10:33:35,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:33:35,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:33:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:33:35,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:33:35,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354447618] [2025-03-17 10:33:35,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354447618] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:33:35,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:33:35,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:33:35,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774565234] [2025-03-17 10:33:35,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:33:35,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:33:35,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:33:35,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:33:35,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:33:35,945 INFO L87 Difference]: Start difference. First operand 231 states and 331 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:33:36,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:33:36,036 INFO L93 Difference]: Finished difference Result 593 states and 853 transitions. [2025-03-17 10:33:36,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:33:36,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 81 [2025-03-17 10:33:36,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:33:36,038 INFO L225 Difference]: With dead ends: 593 [2025-03-17 10:33:36,038 INFO L226 Difference]: Without dead ends: 364 [2025-03-17 10:33:36,039 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 [2025-03-17 10:33:36,039 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 134 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 594 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 [2025-03-17 10:33:36,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 594 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:33:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2025-03-17 10:33:36,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2025-03-17 10:33:36,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 348 states have (on average 1.4281609195402298) internal successors, (497), 358 states have internal predecessors, (497), 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) [2025-03-17 10:33:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 523 transitions. [2025-03-17 10:33:36,060 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 523 transitions. Word has length 81 [2025-03-17 10:33:36,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:33:36,060 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 523 transitions. [2025-03-17 10:33:36,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:33:36,061 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 523 transitions. [2025-03-17 10:33:36,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-17 10:33:36,061 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:33:36,061 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] [2025-03-17 10:33:36,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 10:33:36,062 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:33:36,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:33:36,062 INFO L85 PathProgramCache]: Analyzing trace with hash -548803956, now seen corresponding path program 1 times [2025-03-17 10:33:36,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:33:36,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339884330] [2025-03-17 10:33:36,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:33:36,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:33:36,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-17 10:33:36,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-17 10:33:36,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:33:36,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:33:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:33:36,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:33:36,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339884330] [2025-03-17 10:33:36,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339884330] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:33:36,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18585306] [2025-03-17 10:33:36,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:33:36,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:33:36,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:33:36,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:33:36,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 10:33:36,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-17 10:33:36,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-17 10:33:36,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:33:36,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:33:36,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 10:33:36,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:33:36,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:33:36,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 10:33:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:33:36,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18585306] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 10:33:36,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 10:33:36,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-17 10:33:36,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918745565] [2025-03-17 10:33:36,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 10:33:36,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:33:36,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:33:36,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:33:36,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:33:36,772 INFO L87 Difference]: Start difference. First operand 364 states and 523 transitions. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 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) [2025-03-17 10:33:36,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:33:36,963 INFO L93 Difference]: Finished difference Result 848 states and 1209 transitions. [2025-03-17 10:33:36,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:33:36,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 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 96 [2025-03-17 10:33:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:33:36,971 INFO L225 Difference]: With dead ends: 848 [2025-03-17 10:33:36,971 INFO L226 Difference]: Without dead ends: 820 [2025-03-17 10:33:36,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:33:36,973 INFO L435 NwaCegarLoop]: 338 mSDtfsCounter, 1232 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:33:36,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1452 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:33:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2025-03-17 10:33:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2025-03-17 10:33:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 795 states have (on average 1.4025157232704402) internal successors, (1115), 805 states have internal predecessors, (1115), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 10:33:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1159 transitions. [2025-03-17 10:33:37,002 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1159 transitions. Word has length 96 [2025-03-17 10:33:37,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:33:37,002 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1159 transitions. [2025-03-17 10:33:37,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 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) [2025-03-17 10:33:37,002 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1159 transitions. [2025-03-17 10:33:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2025-03-17 10:33:37,006 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:33:37,006 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, 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] [2025-03-17 10:33:37,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 10:33:37,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:33:37,207 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:33:37,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:33:37,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1319311570, now seen corresponding path program 1 times [2025-03-17 10:33:37,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:33:37,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986638212] [2025-03-17 10:33:37,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:33:37,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:33:37,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 315 statements into 1 equivalence classes. [2025-03-17 10:33:37,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 315 of 315 statements. [2025-03-17 10:33:37,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:33:37,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:33:37,990 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 436 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:33:37,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:33:37,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986638212] [2025-03-17 10:33:37,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986638212] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:33:37,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537354070] [2025-03-17 10:33:37,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:33:37,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:33:37,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:33:37,993 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:33:37,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 10:33:38,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 315 statements into 1 equivalence classes. [2025-03-17 10:33:38,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 315 of 315 statements. [2025-03-17 10:33:38,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:33:38,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:33:38,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 10:33:38,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:33:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 436 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:33:38,776 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 10:33:39,092 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 436 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:33:39,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537354070] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 10:33:39,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 10:33:39,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-17 10:33:39,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801541899] [2025-03-17 10:33:39,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 10:33:39,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 10:33:39,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:33:39,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 10:33:39,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-17 10:33:39,095 INFO L87 Difference]: Start difference. First operand 820 states and 1159 transitions. Second operand has 13 states, 13 states have (on average 52.69230769230769) internal successors, (685), 13 states have internal predecessors, (685), 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) [2025-03-17 10:33:39,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:33:39,509 INFO L93 Difference]: Finished difference Result 2030 states and 2874 transitions. [2025-03-17 10:33:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 10:33:39,509 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 52.69230769230769) internal successors, (685), 13 states have internal predecessors, (685), 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 315 [2025-03-17 10:33:39,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:33:39,516 INFO L225 Difference]: With dead ends: 2030 [2025-03-17 10:33:39,516 INFO L226 Difference]: Without dead ends: 2002 [2025-03-17 10:33:39,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-17 10:33:39,517 INFO L435 NwaCegarLoop]: 338 mSDtfsCounter, 3341 mSDsluCounter, 2860 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:33:39,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3367 Valid, 3198 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:33:39,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2025-03-17 10:33:39,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 2002. [2025-03-17 10:33:39,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1959 states have (on average 1.3991832567636548) internal successors, (2741), 1969 states have internal predecessors, (2741), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2025-03-17 10:33:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 2821 transitions. [2025-03-17 10:33:39,565 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 2821 transitions. Word has length 315 [2025-03-17 10:33:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:33:39,565 INFO L471 AbstractCegarLoop]: Abstraction has 2002 states and 2821 transitions. [2025-03-17 10:33:39,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.69230769230769) internal successors, (685), 13 states have internal predecessors, (685), 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) [2025-03-17 10:33:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 2821 transitions. [2025-03-17 10:33:39,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2025-03-17 10:33:39,576 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:33:39,576 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, 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] [2025-03-17 10:33:39,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 10:33:39,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-17 10:33:39,779 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:33:39,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:33:39,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1286708370, now seen corresponding path program 2 times [2025-03-17 10:33:39,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:33:39,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742950824] [2025-03-17 10:33:39,780 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 10:33:39,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:33:39,951 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 753 statements into 2 equivalence classes.