./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.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 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:03:10,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:03:10,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 13:03:10,675 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:03:10,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:03:10,708 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:03:10,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:03:10,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:03:10,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 13:03:10,713 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 13:03:10,714 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:03:10,714 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:03:10,715 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:03:10,715 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:03:10,717 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:03:10,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:03:10,718 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:03:10,718 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:03:10,718 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:03:10,721 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:03:10,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:03:10,722 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:03:10,722 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:03:10,722 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:03:10,723 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:03:10,723 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:03:10,723 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:03:10,724 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:03:10,724 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:03:10,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:03:10,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 13:03:10,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:03:10,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:03:10,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:03:10,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:03:10,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:03:10,727 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:03:10,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:03:10,728 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:03:10,728 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:03:10,728 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:03:10,729 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:03:10,729 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2024-11-20 13:03:10,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:03:11,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:03:11,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:03:11,019 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:03:11,020 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:03:11,021 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2024-11-20 13:03:12,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:03:12,781 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:03:12,781 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2024-11-20 13:03:12,803 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/818a1896c/19caa30d0d464a7986567e983f34d520/FLAGcfeab67de [2024-11-20 13:03:13,071 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/818a1896c/19caa30d0d464a7986567e983f34d520 [2024-11-20 13:03:13,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:03:13,074 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:03:13,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:03:13,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:03:13,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:03:13,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:03:13" (1/1) ... [2024-11-20 13:03:13,082 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c16c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13, skipping insertion in model container [2024-11-20 13:03:13,082 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:03:13" (1/1) ... [2024-11-20 13:03:13,153 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:03:13,543 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_BER_test4-1.i[33021,33034] [2024-11-20 13:03:13,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:03:13,727 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:03:13,763 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_BER_test4-1.i[33021,33034] [2024-11-20 13:03:13,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:03:13,868 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:03:13,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13 WrapperNode [2024-11-20 13:03:13,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:03:13,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:03:13,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:03:13,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:03:13,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13" (1/1) ... [2024-11-20 13:03:13,974 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13" (1/1) ... [2024-11-20 13:03:14,088 INFO L138 Inliner]: procedures = 176, calls = 335, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1586 [2024-11-20 13:03:14,089 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:03:14,090 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:03:14,090 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:03:14,090 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:03:14,101 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13" (1/1) ... [2024-11-20 13:03:14,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13" (1/1) ... [2024-11-20 13:03:14,123 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13" (1/1) ... [2024-11-20 13:03:14,217 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [2, 307]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 82 writes are split as follows [0, 82]. [2024-11-20 13:03:14,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13" (1/1) ... [2024-11-20 13:03:14,218 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13" (1/1) ... [2024-11-20 13:03:14,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13" (1/1) ... [2024-11-20 13:03:14,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13" (1/1) ... [2024-11-20 13:03:14,275 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13" (1/1) ... [2024-11-20 13:03:14,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13" (1/1) ... [2024-11-20 13:03:14,298 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:03:14,299 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:03:14,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:03:14,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:03:14,300 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13" (1/1) ... [2024-11-20 13:03:14,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:03:14,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:03:14,341 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) [2024-11-20 13:03:14,345 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 [2024-11-20 13:03:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 13:03:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 13:03:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-20 13:03:14,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-20 13:03:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 13:03:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 13:03:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-20 13:03:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-20 13:03:14,396 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-20 13:03:14,396 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-20 13:03:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 13:03:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:03:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 13:03:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 13:03:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 13:03:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 13:03:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 13:03:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 13:03:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 13:03:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:03:14,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:03:14,593 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:03:14,596 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:03:16,173 INFO L? ?]: Removed 387 outVars from TransFormulas that were not future-live. [2024-11-20 13:03:16,173 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:03:16,200 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:03:16,201 INFO L316 CfgBuilder]: Removed 60 assume(true) statements. [2024-11-20 13:03:16,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:03:16 BoogieIcfgContainer [2024-11-20 13:03:16,201 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:03:16,204 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:03:16,204 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:03:16,208 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:03:16,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:03:13" (1/3) ... [2024-11-20 13:03:16,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0c9b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:03:16, skipping insertion in model container [2024-11-20 13:03:16,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:03:13" (2/3) ... [2024-11-20 13:03:16,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0c9b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:03:16, skipping insertion in model container [2024-11-20 13:03:16,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:03:16" (3/3) ... [2024-11-20 13:03:16,211 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-1.i [2024-11-20 13:03:16,226 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:03:16,226 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 13:03:16,300 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:03:16,306 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;@36f33829, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:03:16,306 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 13:03:16,315 INFO L276 IsEmpty]: Start isEmpty. Operand has 425 states, 405 states have (on average 1.617283950617284) internal successors, (655), 416 states have internal predecessors, (655), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-20 13:03:16,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-20 13:03:16,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:03:16,323 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:03:16,323 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:03:16,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:03:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1164903964, now seen corresponding path program 1 times [2024-11-20 13:03:16,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:03:16,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752297396] [2024-11-20 13:03:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:03:16,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:03:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:03:16,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:03:16,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752297396] [2024-11-20 13:03:16,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752297396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:03:16,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:03:16,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:03:16,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096377955] [2024-11-20 13:03:16,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:03:16,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:03:16,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:03:16,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:03:16,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:03:16,592 INFO L87 Difference]: Start difference. First operand has 425 states, 405 states have (on average 1.617283950617284) internal successors, (655), 416 states have internal predecessors, (655), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) 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) [2024-11-20 13:03:16,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:03:16,730 INFO L93 Difference]: Finished difference Result 1232 states and 2007 transitions. [2024-11-20 13:03:16,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:03:16,737 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 [2024-11-20 13:03:16,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:03:16,758 INFO L225 Difference]: With dead ends: 1232 [2024-11-20 13:03:16,758 INFO L226 Difference]: Without dead ends: 805 [2024-11-20 13:03:16,765 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 [2024-11-20 13:03:16,770 INFO L432 NwaCegarLoop]: 624 mSDtfsCounter, 545 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:03:16,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1238 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:03:16,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-20 13:03:16,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 422. [2024-11-20 13:03:16,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 403 states have (on average 1.4491315136476426) internal successors, (584), 413 states have internal predecessors, (584), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-20 13:03:16,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 616 transitions. [2024-11-20 13:03:16,866 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 616 transitions. Word has length 10 [2024-11-20 13:03:16,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:03:16,867 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 616 transitions. [2024-11-20 13:03:16,867 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) [2024-11-20 13:03:16,868 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 616 transitions. [2024-11-20 13:03:16,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-20 13:03:16,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:03:16,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:03:16,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:03:16,878 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:03:16,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:03:16,879 INFO L85 PathProgramCache]: Analyzing trace with hash 474255997, now seen corresponding path program 1 times [2024-11-20 13:03:16,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:03:16,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981510507] [2024-11-20 13:03:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:03:16,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:03:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:03:17,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:03:17,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981510507] [2024-11-20 13:03:17,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981510507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:03:17,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:03:17,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:03:17,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913506456] [2024-11-20 13:03:17,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:03:17,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:03:17,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:03:17,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:03:17,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:03:17,484 INFO L87 Difference]: Start difference. First operand 422 states and 616 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2024-11-20 13:03:17,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:03:17,594 INFO L93 Difference]: Finished difference Result 844 states and 1232 transitions. [2024-11-20 13:03:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:03:17,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 156 [2024-11-20 13:03:17,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:03:17,600 INFO L225 Difference]: With dead ends: 844 [2024-11-20 13:03:17,601 INFO L226 Difference]: Without dead ends: 425 [2024-11-20 13:03:17,602 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 [2024-11-20 13:03:17,603 INFO L432 NwaCegarLoop]: 587 mSDtfsCounter, 105 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1668 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 [2024-11-20 13:03:17,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1668 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:03:17,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-20 13:03:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 422. [2024-11-20 13:03:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 403 states have (on average 1.4317617866004964) internal successors, (577), 413 states have internal predecessors, (577), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-20 13:03:17,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 609 transitions. [2024-11-20 13:03:17,620 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 609 transitions. Word has length 156 [2024-11-20 13:03:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:03:17,622 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 609 transitions. [2024-11-20 13:03:17,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2024-11-20 13:03:17,623 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 609 transitions. [2024-11-20 13:03:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-20 13:03:17,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:03:17,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:03:17,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 13:03:17,630 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:03:17,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:03:17,633 INFO L85 PathProgramCache]: Analyzing trace with hash -98810895, now seen corresponding path program 1 times [2024-11-20 13:03:17,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:03:17,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27187003] [2024-11-20 13:03:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:03:17,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:03:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:17,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:03:17,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:03:17,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27187003] [2024-11-20 13:03:17,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27187003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:03:17,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:03:17,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:03:17,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005014335] [2024-11-20 13:03:17,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:03:17,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:03:17,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:03:17,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:03:17,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:03:17,954 INFO L87 Difference]: Start difference. First operand 422 states and 609 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2024-11-20 13:03:18,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:03:18,014 INFO L93 Difference]: Finished difference Result 970 states and 1404 transitions. [2024-11-20 13:03:18,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:03:18,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 156 [2024-11-20 13:03:18,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:03:18,022 INFO L225 Difference]: With dead ends: 970 [2024-11-20 13:03:18,022 INFO L226 Difference]: Without dead ends: 551 [2024-11-20 13:03:18,024 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 [2024-11-20 13:03:18,025 INFO L432 NwaCegarLoop]: 607 mSDtfsCounter, 134 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:03:18,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1207 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:03:18,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-20 13:03:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-11-20 13:03:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 532 states have (on average 1.4379699248120301) internal successors, (765), 542 states have internal predecessors, (765), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-20 13:03:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 797 transitions. [2024-11-20 13:03:18,069 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 797 transitions. Word has length 156 [2024-11-20 13:03:18,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:03:18,071 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 797 transitions. [2024-11-20 13:03:18,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2024-11-20 13:03:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 797 transitions. [2024-11-20 13:03:18,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-20 13:03:18,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:03:18,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:03:18,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 13:03:18,078 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:03:18,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:03:18,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1294577408, now seen corresponding path program 1 times [2024-11-20 13:03:18,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:03:18,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643782946] [2024-11-20 13:03:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:03:18,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:03:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:18,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-20 13:03:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:18,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:03:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:03:18,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:03:18,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643782946] [2024-11-20 13:03:18,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643782946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:03:18,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:03:18,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:03:18,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845007542] [2024-11-20 13:03:18,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:03:18,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 13:03:18,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:03:18,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 13:03:18,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:03:18,487 INFO L87 Difference]: Start difference. First operand 551 states and 797 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:03:19,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:03:19,035 INFO L93 Difference]: Finished difference Result 931 states and 1346 transitions. [2024-11-20 13:03:19,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:03:19,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-20 13:03:19,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:03:19,040 INFO L225 Difference]: With dead ends: 931 [2024-11-20 13:03:19,040 INFO L226 Difference]: Without dead ends: 512 [2024-11-20 13:03:19,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:03:19,042 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 44 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 13:03:19,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1843 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 13:03:19,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-20 13:03:19,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 509. [2024-11-20 13:03:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 490 states have (on average 1.4040816326530612) internal successors, (688), 500 states have internal predecessors, (688), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-20 13:03:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 720 transitions. [2024-11-20 13:03:19,067 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 720 transitions. Word has length 171 [2024-11-20 13:03:19,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:03:19,069 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 720 transitions. [2024-11-20 13:03:19,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:03:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 720 transitions. [2024-11-20 13:03:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-20 13:03:19,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:03:19,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:03:19,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 13:03:19,075 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:03:19,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:03:19,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1252147220, now seen corresponding path program 1 times [2024-11-20 13:03:19,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:03:19,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917975102] [2024-11-20 13:03:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:03:19,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:03:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:19,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-20 13:03:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:19,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:03:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:03:19,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:03:19,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917975102] [2024-11-20 13:03:19,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917975102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:03:19,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:03:19,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:03:19,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796607589] [2024-11-20 13:03:19,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:03:19,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 13:03:19,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:03:19,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 13:03:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:03:19,409 INFO L87 Difference]: Start difference. First operand 509 states and 720 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:03:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:03:20,341 INFO L93 Difference]: Finished difference Result 883 states and 1252 transitions. [2024-11-20 13:03:20,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:03:20,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-20 13:03:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:03:20,344 INFO L225 Difference]: With dead ends: 883 [2024-11-20 13:03:20,345 INFO L226 Difference]: Without dead ends: 506 [2024-11-20 13:03:20,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:03:20,348 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 17 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-20 13:03:20,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1850 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-20 13:03:20,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-11-20 13:03:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 503. [2024-11-20 13:03:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 484 states have (on average 1.4008264462809918) internal successors, (678), 494 states have internal predecessors, (678), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-20 13:03:20,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 710 transitions. [2024-11-20 13:03:20,367 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 710 transitions. Word has length 171 [2024-11-20 13:03:20,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:03:20,368 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 710 transitions. [2024-11-20 13:03:20,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:03:20,369 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 710 transitions. [2024-11-20 13:03:20,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-20 13:03:20,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:03:20,371 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:03:20,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 13:03:20,372 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:03:20,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:03:20,373 INFO L85 PathProgramCache]: Analyzing trace with hash 377137420, now seen corresponding path program 1 times [2024-11-20 13:03:20,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:03:20,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64232656] [2024-11-20 13:03:20,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:03:20,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:03:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:20,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-20 13:03:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:20,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:03:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:03:20,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:03:20,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64232656] [2024-11-20 13:03:20,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64232656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:03:20,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:03:20,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:03:20,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851306155] [2024-11-20 13:03:20,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:03:20,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:03:20,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:03:20,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:03:20,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:03:20,706 INFO L87 Difference]: Start difference. First operand 503 states and 710 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:03:21,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:03:21,190 INFO L93 Difference]: Finished difference Result 1017 states and 1429 transitions. [2024-11-20 13:03:21,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:03:21,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-20 13:03:21,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:03:21,195 INFO L225 Difference]: With dead ends: 1017 [2024-11-20 13:03:21,196 INFO L226 Difference]: Without dead ends: 646 [2024-11-20 13:03:21,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:03:21,198 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 247 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 13:03:21,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1414 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 13:03:21,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-11-20 13:03:21,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 643. [2024-11-20 13:03:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 621 states have (on average 1.3832528180354267) internal successors, (859), 631 states have internal predecessors, (859), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-20 13:03:21,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 897 transitions. [2024-11-20 13:03:21,220 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 897 transitions. Word has length 171 [2024-11-20 13:03:21,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:03:21,221 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 897 transitions. [2024-11-20 13:03:21,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:03:21,221 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 897 transitions. [2024-11-20 13:03:21,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-20 13:03:21,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:03:21,223 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:03:21,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 13:03:21,224 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:03:21,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:03:21,224 INFO L85 PathProgramCache]: Analyzing trace with hash 910369239, now seen corresponding path program 1 times [2024-11-20 13:03:21,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:03:21,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048363831] [2024-11-20 13:03:21,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:03:21,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:03:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:21,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-20 13:03:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:21,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:03:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:21,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-11-20 13:03:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:21,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-20 13:03:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:03:21,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:03:21,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048363831] [2024-11-20 13:03:21,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048363831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:03:21,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183804146] [2024-11-20 13:03:21,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:03:21,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:03:21,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:03:21,662 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) [2024-11-20 13:03:21,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 13:03:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:22,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 13:03:22,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:03:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:03:22,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:03:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:03:22,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183804146] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:03:22,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:03:22,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-20 13:03:22,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985654239] [2024-11-20 13:03:22,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:03:22,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 13:03:22,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:03:22,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 13:03:22,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-20 13:03:22,679 INFO L87 Difference]: Start difference. First operand 643 states and 897 transitions. Second operand has 8 states, 8 states have (on average 60.5) internal successors, (484), 7 states have internal predecessors, (484), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-20 13:03:23,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:03:23,234 INFO L93 Difference]: Finished difference Result 1412 states and 1988 transitions. [2024-11-20 13:03:23,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:03:23,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 60.5) internal successors, (484), 7 states have internal predecessors, (484), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 186 [2024-11-20 13:03:23,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:03:23,241 INFO L225 Difference]: With dead ends: 1412 [2024-11-20 13:03:23,242 INFO L226 Difference]: Without dead ends: 1381 [2024-11-20 13:03:23,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-20 13:03:23,243 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 2626 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2658 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 13:03:23,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2658 Valid, 2763 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 13:03:23,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2024-11-20 13:03:23,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1378. [2024-11-20 13:03:23,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1341 states have (on average 1.372110365398956) internal successors, (1840), 1351 states have internal predecessors, (1840), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-20 13:03:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1908 transitions. [2024-11-20 13:03:23,277 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1908 transitions. Word has length 186 [2024-11-20 13:03:23,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:03:23,277 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1908 transitions. [2024-11-20 13:03:23,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.5) internal successors, (484), 7 states have internal predecessors, (484), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-20 13:03:23,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1908 transitions. [2024-11-20 13:03:23,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2024-11-20 13:03:23,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:03:23,289 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, 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, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:03:23,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 13:03:23,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:03:23,491 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:03:23,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:03:23,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1729157342, now seen corresponding path program 1 times [2024-11-20 13:03:23,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:03:23,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961051899] [2024-11-20 13:03:23,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:03:23,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:03:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:25,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-20 13:03:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:25,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:03:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:25,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-11-20 13:03:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:25,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-20 13:03:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:03:25,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:03:25,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961051899] [2024-11-20 13:03:25,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961051899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:03:25,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216536915] [2024-11-20 13:03:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:03:25,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:03:25,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:03:25,315 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) [2024-11-20 13:03:25,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 13:03:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:03:26,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 13:03:26,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:03:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:03:27,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:03:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:03:28,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216536915] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:03:28,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:03:28,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-20 13:03:28,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441959383] [2024-11-20 13:03:28,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:03:28,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 13:03:28,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:03:28,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 13:03:28,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-20 13:03:28,183 INFO L87 Difference]: Start difference. First operand 1378 states and 1908 transitions. Second operand has 14 states, 14 states have (on average 97.14285714285714) internal successors, (1360), 13 states have internal predecessors, (1360), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-20 13:03:29,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:03:29,438 INFO L93 Difference]: Finished difference Result 3428 states and 4811 transitions. [2024-11-20 13:03:29,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 13:03:29,439 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 97.14285714285714) internal successors, (1360), 13 states have internal predecessors, (1360), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 624 [2024-11-20 13:03:29,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:03:29,457 INFO L225 Difference]: With dead ends: 3428 [2024-11-20 13:03:29,458 INFO L226 Difference]: Without dead ends: 3397 [2024-11-20 13:03:29,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1261 GetRequests, 1249 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-20 13:03:29,462 INFO L432 NwaCegarLoop]: 641 mSDtfsCounter, 4360 mSDsluCounter, 5706 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4464 SdHoareTripleChecker+Valid, 6347 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-20 13:03:29,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4464 Valid, 6347 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-20 13:03:29,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2024-11-20 13:03:29,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3394. [2024-11-20 13:03:29,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3321 states have (on average 1.3706714844926227) internal successors, (4552), 3331 states have internal predecessors, (4552), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-20 13:03:29,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 4692 transitions. [2024-11-20 13:03:29,581 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 4692 transitions. Word has length 624 [2024-11-20 13:03:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:03:29,582 INFO L471 AbstractCegarLoop]: Abstraction has 3394 states and 4692 transitions. [2024-11-20 13:03:29,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 97.14285714285714) internal successors, (1360), 13 states have internal predecessors, (1360), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-20 13:03:29,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 4692 transitions. [2024-11-20 13:03:29,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1501 [2024-11-20 13:03:29,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:03:29,670 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, 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, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:03:29,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 13:03:29,870 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,SelfDestructingSolverStorable7 [2024-11-20 13:03:29,872 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:03:29,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:03:29,872 INFO L85 PathProgramCache]: Analyzing trace with hash -325132552, now seen corresponding path program 2 times [2024-11-20 13:03:29,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:03:29,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35806167] [2024-11-20 13:03:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:03:29,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms