./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 c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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 0.2.5-?-c7c6ca5-m [2024-11-09 06:20:27,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:20:27,650 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 06:20:27,655 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:20:27,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:20:27,690 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:20:27,691 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:20:27,691 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:20:27,692 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 06:20:27,693 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 06:20:27,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:20:27,694 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:20:27,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:20:27,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:20:27,696 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 06:20:27,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:20:27,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:20:27,696 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:20:27,697 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:20:27,701 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:20:27,702 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:20:27,702 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:20:27,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:20:27,703 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:20:27,703 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:20:27,703 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:20:27,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:20:27,703 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:20:27,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:20:27,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:20:27,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:20:27,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:20:27,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:20:27,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:20:27,707 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:20:27,707 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:20:27,707 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 06:20:27,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:20:27,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:20:27,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 06:20:27,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 06:20:27,708 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:20:27,709 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2024-11-09 06:20:28,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:20:28,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:20:28,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:20:28,057 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:20:28,057 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:20:28,059 INFO L431 ainManager$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 [2024-11-09 06:20:29,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:20:30,347 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:20:30,348 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2024-11-09 06:20:30,381 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a89735af6/8e861ad3800d49dd975f23ccac44d687/FLAG60e85d66b [2024-11-09 06:20:30,555 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a89735af6/8e861ad3800d49dd975f23ccac44d687 [2024-11-09 06:20:30,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:20:30,563 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:20:30,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:20:30,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:20:30,575 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:20:30,576 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:20:30" (1/1) ... [2024-11-09 06:20:30,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4fe3a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:30, skipping insertion in model container [2024-11-09 06:20:30,581 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:20:30" (1/1) ... [2024-11-09 06:20:30,668 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:20:31,160 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] [2024-11-09 06:20:31,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:20:31,304 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:20:31,352 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] [2024-11-09 06:20:31,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:20:31,452 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:20:31,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:31 WrapperNode [2024-11-09 06:20:31,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:20:31,454 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:20:31,454 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:20:31,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:20:31,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:31" (1/1) ... [2024-11-09 06:20:31,487 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:31" (1/1) ... [2024-11-09 06:20:31,550 INFO L138 Inliner]: procedures = 176, calls = 179, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 838 [2024-11-09 06:20:31,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:20:31,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:20:31,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:20:31,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:20:31,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:31" (1/1) ... [2024-11-09 06:20:31,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:31" (1/1) ... [2024-11-09 06:20:31,578 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:31" (1/1) ... [2024-11-09 06:20:31,622 INFO L175 MemorySlicer]: Split 158 memory accesses to 2 slices as follows [156, 2]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 42 writes are split as follows [42, 0]. [2024-11-09 06:20:31,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:31" (1/1) ... [2024-11-09 06:20:31,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:31" (1/1) ... [2024-11-09 06:20:31,641 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:31" (1/1) ... [2024-11-09 06:20:31,647 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:31" (1/1) ... [2024-11-09 06:20:31,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:31" (1/1) ... [2024-11-09 06:20:31,653 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:31" (1/1) ... [2024-11-09 06:20:31,658 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:20:31,659 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:20:31,659 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:20:31,659 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:20:31,660 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:31" (1/1) ... [2024-11-09 06:20:31,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:20:31,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:20:31,701 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) [2024-11-09 06:20:31,705 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 [2024-11-09 06:20:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 06:20:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 06:20:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 06:20:31,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 06:20:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 06:20:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 06:20:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-09 06:20:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-09 06:20:31,760 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-09 06:20:31,760 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-09 06:20:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:20:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:20:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 06:20:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 06:20:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 06:20:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 06:20:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:20:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 06:20:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 06:20:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:20:31,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:20:31,980 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:20:31,983 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:20:33,084 INFO L? ?]: Removed 208 outVars from TransFormulas that were not future-live. [2024-11-09 06:20:33,084 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:20:33,102 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:20:33,103 INFO L316 CfgBuilder]: Removed 31 assume(true) statements. [2024-11-09 06:20:33,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:20:33 BoogieIcfgContainer [2024-11-09 06:20:33,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:20:33,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:20:33,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:20:33,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:20:33,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:20:30" (1/3) ... [2024-11-09 06:20:33,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ad65da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:20:33, skipping insertion in model container [2024-11-09 06:20:33,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:20:31" (2/3) ... [2024-11-09 06:20:33,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ad65da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:20:33, skipping insertion in model container [2024-11-09 06:20:33,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:20:33" (3/3) ... [2024-11-09 06:20:33,111 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-1.i [2024-11-09 06:20:33,126 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:20:33,126 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:20:33,191 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:20:33,199 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;@3507d377, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:20:33,200 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:20:33,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 235 states, 218 states have (on average 1.614678899082569) internal successors, (352), 229 states have internal predecessors, (352), 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) [2024-11-09 06:20:33,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 06:20:33,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:33,224 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:33,225 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:20:33,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:33,234 INFO L85 PathProgramCache]: Analyzing trace with hash -811690023, now seen corresponding path program 1 times [2024-11-09 06:20:33,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:20:33,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490538605] [2024-11-09 06:20:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:33,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:33,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:20:33,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490538605] [2024-11-09 06:20:33,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490538605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:33,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:20:33,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:20:33,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226894219] [2024-11-09 06:20:33,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:33,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 06:20:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:20:33,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 06:20:33,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:20:33,456 INFO L87 Difference]: Start difference. First operand has 235 states, 218 states have (on average 1.614678899082569) internal successors, (352), 229 states have internal predecessors, (352), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2024-11-09 06:20:33,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:33,507 INFO L93 Difference]: Finished difference Result 468 states and 764 transitions. [2024-11-09 06:20:33,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 06:20:33,510 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 10 [2024-11-09 06:20:33,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:33,520 INFO L225 Difference]: With dead ends: 468 [2024-11-09 06:20:33,521 INFO L226 Difference]: Without dead ends: 231 [2024-11-09 06:20:33,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:20:33,530 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:33,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:20:33,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-09 06:20:33,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-09 06:20:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 215 states have (on average 1.4511627906976745) internal successors, (312), 225 states have internal predecessors, (312), 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) [2024-11-09 06:20:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 338 transitions. [2024-11-09 06:20:33,576 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 338 transitions. Word has length 10 [2024-11-09 06:20:33,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:33,577 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 338 transitions. [2024-11-09 06:20:33,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2024-11-09 06:20:33,577 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 338 transitions. [2024-11-09 06:20:33,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 06:20:33,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:33,579 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:33,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:20:33,579 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:20:33,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:33,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1877032040, now seen corresponding path program 1 times [2024-11-09 06:20:33,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:20:33,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827807728] [2024-11-09 06:20:33,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:33,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:33,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:20:33,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827807728] [2024-11-09 06:20:33,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827807728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:33,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:20:33,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:20:33,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472620829] [2024-11-09 06:20:33,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:33,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:20:33,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:20:33,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:20:33,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:20:33,678 INFO L87 Difference]: Start difference. First operand 231 states and 338 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-09 06:20:33,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:33,756 INFO L93 Difference]: Finished difference Result 456 states and 670 transitions. [2024-11-09 06:20:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:20:33,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2024-11-09 06:20:33,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:33,764 INFO L225 Difference]: With dead ends: 456 [2024-11-09 06:20:33,764 INFO L226 Difference]: Without dead ends: 425 [2024-11-09 06:20:33,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:20:33,766 INFO L432 NwaCegarLoop]: 335 mSDtfsCounter, 274 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:33,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 668 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:20:33,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-09 06:20:33,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 232. [2024-11-09 06:20:33,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 216 states have (on average 1.4490740740740742) internal successors, (313), 226 states have internal predecessors, (313), 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) [2024-11-09 06:20:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 339 transitions. [2024-11-09 06:20:33,807 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 339 transitions. Word has length 10 [2024-11-09 06:20:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:33,808 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 339 transitions. [2024-11-09 06:20:33,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-09 06:20:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 339 transitions. [2024-11-09 06:20:33,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 06:20:33,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:33,814 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:33,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:20:33,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:20:33,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:33,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1118141752, now seen corresponding path program 1 times [2024-11-09 06:20:33,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:20:33,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95262143] [2024-11-09 06:20:33,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:33,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:34,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:20:34,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95262143] [2024-11-09 06:20:34,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95262143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:34,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:20:34,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:20:34,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424245292] [2024-11-09 06:20:34,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:34,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:20:34,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:20:34,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:20:34,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:20:34,376 INFO L87 Difference]: Start difference. First operand 232 states and 339 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-11-09 06:20:34,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:34,486 INFO L93 Difference]: Finished difference Result 464 states and 678 transitions. [2024-11-09 06:20:34,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:20:34,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 85 [2024-11-09 06:20:34,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:34,488 INFO L225 Difference]: With dead ends: 464 [2024-11-09 06:20:34,489 INFO L226 Difference]: Without dead ends: 235 [2024-11-09 06:20:34,490 INFO L431 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 [2024-11-09 06:20:34,493 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 105 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:34,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 837 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:20:34,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-09 06:20:34,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 232. [2024-11-09 06:20:34,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 216 states have (on average 1.4166666666666667) internal successors, (306), 226 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) [2024-11-09 06:20:34,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 332 transitions. [2024-11-09 06:20:34,523 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 332 transitions. Word has length 85 [2024-11-09 06:20:34,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:34,524 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 332 transitions. [2024-11-09 06:20:34,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-11-09 06:20:34,524 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 332 transitions. [2024-11-09 06:20:34,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 06:20:34,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:34,529 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:34,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:20:34,530 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:20:34,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:34,532 INFO L85 PathProgramCache]: Analyzing trace with hash -93639724, now seen corresponding path program 1 times [2024-11-09 06:20:34,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:20:34,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981929208] [2024-11-09 06:20:34,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:34,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:34,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:34,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:20:34,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981929208] [2024-11-09 06:20:34,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981929208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:34,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:20:34,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:20:34,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310023559] [2024-11-09 06:20:34,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:34,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:20:34,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:20:34,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:20:34,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:20:34,789 INFO L87 Difference]: Start difference. First operand 232 states and 332 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-09 06:20:34,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:34,848 INFO L93 Difference]: Finished difference Result 590 states and 850 transitions. [2024-11-09 06:20:34,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:20:34,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 85 [2024-11-09 06:20:34,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:34,855 INFO L225 Difference]: With dead ends: 590 [2024-11-09 06:20:34,855 INFO L226 Difference]: Without dead ends: 361 [2024-11-09 06:20:34,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:20:34,858 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 134 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:34,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 652 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:20:34,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-09 06:20:34,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2024-11-09 06:20:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 345 states have (on average 1.4318840579710146) internal successors, (494), 355 states have internal predecessors, (494), 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) [2024-11-09 06:20:34,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 520 transitions. [2024-11-09 06:20:34,893 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 520 transitions. Word has length 85 [2024-11-09 06:20:34,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:34,894 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 520 transitions. [2024-11-09 06:20:34,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-09 06:20:34,895 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 520 transitions. [2024-11-09 06:20:34,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 06:20:34,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:34,900 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:34,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:20:34,901 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:20:34,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:34,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2040299483, now seen corresponding path program 1 times [2024-11-09 06:20:34,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:20:34,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861741294] [2024-11-09 06:20:34,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:34,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:35,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-09 06:20:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:35,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-09 06:20:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:20:35,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:20:35,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861741294] [2024-11-09 06:20:35,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861741294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:20:35,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780624154] [2024-11-09 06:20:35,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:35,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:35,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:20:35,249 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) [2024-11-09 06:20:35,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:20:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:35,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:20:35,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:35,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:20:35,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:20:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:20:36,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780624154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:20:36,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:20:36,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-09 06:20:36,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148430655] [2024-11-09 06:20:36,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:20:36,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:20:36,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:20:36,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:20:36,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:20:36,053 INFO L87 Difference]: Start difference. First operand 361 states and 520 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 7 states have internal predecessors, (256), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 06:20:36,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:36,388 INFO L93 Difference]: Finished difference Result 846 states and 1219 transitions. [2024-11-09 06:20:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:20:36,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 7 states have internal predecessors, (256), 4 states have call successors, (7), 3 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 100 [2024-11-09 06:20:36,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:36,394 INFO L225 Difference]: With dead ends: 846 [2024-11-09 06:20:36,394 INFO L226 Difference]: Without dead ends: 815 [2024-11-09 06:20:36,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:20:36,395 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 1246 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:36,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 1792 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:20:36,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-09 06:20:36,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 812. [2024-11-09 06:20:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 787 states have (on average 1.4066073697585768) internal successors, (1107), 797 states have internal predecessors, (1107), 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) [2024-11-09 06:20:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1151 transitions. [2024-11-09 06:20:36,426 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1151 transitions. Word has length 100 [2024-11-09 06:20:36,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:36,426 INFO L471 AbstractCegarLoop]: Abstraction has 812 states and 1151 transitions. [2024-11-09 06:20:36,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 7 states have internal predecessors, (256), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 06:20:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1151 transitions. [2024-11-09 06:20:36,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-11-09 06:20:36,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:36,432 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2024-11-09 06:20:36,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:20:36,633 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 [2024-11-09 06:20:36,634 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:20:36,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:36,635 INFO L85 PathProgramCache]: Analyzing trace with hash 2055633511, now seen corresponding path program 1 times [2024-11-09 06:20:36,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:20:36,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508791745] [2024-11-09 06:20:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:36,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:37,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-09 06:20:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:37,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-09 06:20:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:20:37,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:20:37,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508791745] [2024-11-09 06:20:37,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508791745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:20:37,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782931585] [2024-11-09 06:20:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:37,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:37,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:20:37,869 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) [2024-11-09 06:20:37,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:20:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:38,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 06:20:38,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:20:38,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:20:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:20:39,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782931585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:20:39,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:20:39,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-09 06:20:39,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537250533] [2024-11-09 06:20:39,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:20:39,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 06:20:39,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:20:39,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 06:20:39,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:20:39,379 INFO L87 Difference]: Start difference. First operand 812 states and 1151 transitions. Second operand has 14 states, 14 states have (on average 50.42857142857143) internal successors, (706), 13 states have internal predecessors, (706), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 06:20:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:39,936 INFO L93 Difference]: Finished difference Result 2010 states and 2884 transitions. [2024-11-09 06:20:39,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 06:20:39,937 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 50.42857142857143) internal successors, (706), 13 states have internal predecessors, (706), 4 states have call successors, (7), 3 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 325 [2024-11-09 06:20:39,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:39,948 INFO L225 Difference]: With dead ends: 2010 [2024-11-09 06:20:39,948 INFO L226 Difference]: Without dead ends: 1979 [2024-11-09 06:20:39,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 647 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:20:39,951 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 3231 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3283 SdHoareTripleChecker+Valid, 3771 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:39,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3283 Valid, 3771 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:20:39,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2024-11-09 06:20:39,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1976. [2024-11-09 06:20:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1933 states have (on average 1.404552509053285) internal successors, (2715), 1943 states have internal predecessors, (2715), 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) [2024-11-09 06:20:40,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2795 transitions. [2024-11-09 06:20:40,008 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2795 transitions. Word has length 325 [2024-11-09 06:20:40,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:40,009 INFO L471 AbstractCegarLoop]: Abstraction has 1976 states and 2795 transitions. [2024-11-09 06:20:40,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 50.42857142857143) internal successors, (706), 13 states have internal predecessors, (706), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 06:20:40,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2795 transitions. [2024-11-09 06:20:40,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2024-11-09 06:20:40,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:40,027 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1] [2024-11-09 06:20:40,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 06:20:40,228 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 [2024-11-09 06:20:40,229 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:20:40,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:40,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1418887719, now seen corresponding path program 2 times [2024-11-09 06:20:40,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:20:40,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697343263] [2024-11-09 06:20:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:40,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms