./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.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 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 11:53:38,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 11:53:38,358 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 11:53:38,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 11:53:38,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 11:53:38,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 11:53:38,390 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 11:53:38,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 11:53:38,391 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 11:53:38,391 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 11:53:38,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 11:53:38,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 11:53:38,392 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 11:53:38,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 11:53:38,392 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 11:53:38,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 11:53:38,393 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 11:53:38,393 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 11:53:38,393 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 11:53:38,394 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 11:53:38,394 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 11:53:38,394 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 11:53:38,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 11:53:38,395 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 11:53:38,395 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 11:53:38,395 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 11:53:38,395 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 11:53:38,396 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 11:53:38,396 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 11:53:38,396 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 11:53:38,396 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 11:53:38,397 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 11:53:38,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 11:53:38,397 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 11:53:38,397 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 11:53:38,397 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 11:53:38,398 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 11:53:38,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 11:53:38,398 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 11:53:38,398 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 11:53:38,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 11:53:38,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 11:53:38,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 [2024-11-12 11:53:38,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 11:53:38,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 11:53:38,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 11:53:38,666 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 11:53:38,666 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 11:53:38,667 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2024-11-12 11:53:40,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 11:53:40,305 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 11:53:40,305 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2024-11-12 11:53:40,322 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91347afb1/78ee98f092ec4df1a3d05e89ee14b419/FLAG3f414562f [2024-11-12 11:53:40,340 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91347afb1/78ee98f092ec4df1a3d05e89ee14b419 [2024-11-12 11:53:40,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 11:53:40,345 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 11:53:40,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 11:53:40,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 11:53:40,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 11:53:40,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:40" (1/1) ... [2024-11-12 11:53:40,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a15ff54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40, skipping insertion in model container [2024-11-12 11:53:40,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:40" (1/1) ... [2024-11-12 11:53:40,406 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 11:53:40,669 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_JEN_test4-3.i[33021,33034] [2024-11-12 11:53:40,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 11:53:40,768 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 11:53:40,840 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_JEN_test4-3.i[33021,33034] [2024-11-12 11:53:40,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 11:53:40,924 INFO L204 MainTranslator]: Completed translation [2024-11-12 11:53:40,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40 WrapperNode [2024-11-12 11:53:40,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 11:53:40,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 11:53:40,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 11:53:40,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 11:53:40,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40" (1/1) ... [2024-11-12 11:53:40,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40" (1/1) ... [2024-11-12 11:53:41,060 INFO L138 Inliner]: procedures = 176, calls = 434, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1901 [2024-11-12 11:53:41,061 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 11:53:41,061 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 11:53:41,062 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 11:53:41,062 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 11:53:41,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40" (1/1) ... [2024-11-12 11:53:41,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40" (1/1) ... [2024-11-12 11:53:41,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40" (1/1) ... [2024-11-12 11:53:41,206 INFO L175 MemorySlicer]: Split 403 memory accesses to 2 slices as follows [2, 401]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 98 writes are split as follows [0, 98]. [2024-11-12 11:53:41,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40" (1/1) ... [2024-11-12 11:53:41,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40" (1/1) ... [2024-11-12 11:53:41,252 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40" (1/1) ... [2024-11-12 11:53:41,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40" (1/1) ... [2024-11-12 11:53:41,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40" (1/1) ... [2024-11-12 11:53:41,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40" (1/1) ... [2024-11-12 11:53:41,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 11:53:41,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 11:53:41,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 11:53:41,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 11:53:41,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40" (1/1) ... [2024-11-12 11:53:41,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 11:53:41,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:53:41,352 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) [2024-11-12 11:53:41,364 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 [2024-11-12 11:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 11:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 11:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-12 11:53:41,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-12 11:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 11:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 11:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-12 11:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-12 11:53:41,415 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-12 11:53:41,415 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-12 11:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 11:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 11:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 11:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 11:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 11:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 11:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 11:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 11:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 11:53:41,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 11:53:41,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 11:53:41,611 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 11:53:41,613 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 11:53:43,245 INFO L? ?]: Removed 430 outVars from TransFormulas that were not future-live. [2024-11-12 11:53:43,245 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 11:53:43,263 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 11:53:43,263 INFO L316 CfgBuilder]: Removed 77 assume(true) statements. [2024-11-12 11:53:43,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:53:43 BoogieIcfgContainer [2024-11-12 11:53:43,264 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 11:53:43,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 11:53:43,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 11:53:43,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 11:53:43,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:53:40" (1/3) ... [2024-11-12 11:53:43,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4772c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:53:43, skipping insertion in model container [2024-11-12 11:53:43,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:40" (2/3) ... [2024-11-12 11:53:43,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4772c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:53:43, skipping insertion in model container [2024-11-12 11:53:43,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:53:43" (3/3) ... [2024-11-12 11:53:43,271 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-3.i [2024-11-12 11:53:43,286 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 11:53:43,286 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 11:53:43,362 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 11:53:43,370 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;@1fd18b5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 11:53:43,370 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-12 11:53:43,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 487 states, 467 states have (on average 1.6209850107066381) internal successors, (757), 478 states have internal predecessors, (757), 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) [2024-11-12 11:53:43,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-12 11:53:43,385 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:43,386 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:53:43,386 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:43,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:43,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1157084828, now seen corresponding path program 1 times [2024-11-12 11:53:43,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:43,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061514540] [2024-11-12 11:53:43,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:43,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:43,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:53:43,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:43,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061514540] [2024-11-12 11:53:43,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061514540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:53:43,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:53:43,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 11:53:43,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553060064] [2024-11-12 11:53:43,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:53:43,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 11:53:43,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:43,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 11:53:43,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 11:53:43,605 INFO L87 Difference]: Start difference. First operand has 487 states, 467 states have (on average 1.6209850107066381) internal successors, (757), 478 states have internal predecessors, (757), 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) [2024-11-12 11:53:43,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:43,708 INFO L93 Difference]: Finished difference Result 1356 states and 2211 transitions. [2024-11-12 11:53:43,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 11:53:43,715 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 [2024-11-12 11:53:43,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:43,728 INFO L225 Difference]: With dead ends: 1356 [2024-11-12 11:53:43,729 INFO L226 Difference]: Without dead ends: 805 [2024-11-12 11:53:43,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 11:53:43,739 INFO L435 NwaCegarLoop]: 748 mSDtfsCounter, 545 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1447 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 [2024-11-12 11:53:43,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1447 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 11:53:43,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-12 11:53:43,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 422. [2024-11-12 11:53:43,796 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) [2024-11-12 11:53:43,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 616 transitions. [2024-11-12 11:53:43,801 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 616 transitions. Word has length 10 [2024-11-12 11:53:43,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:43,803 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 616 transitions. [2024-11-12 11:53:43,803 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) [2024-11-12 11:53:43,804 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 616 transitions. [2024-11-12 11:53:43,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-12 11:53:43,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:43,815 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:53:43,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 11:53:43,816 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:43,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:43,817 INFO L85 PathProgramCache]: Analyzing trace with hash 482075133, now seen corresponding path program 1 times [2024-11-12 11:53:43,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:43,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134223914] [2024-11-12 11:53:43,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:43,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:53:44,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:44,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134223914] [2024-11-12 11:53:44,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134223914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:53:44,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:53:44,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:53:44,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770497981] [2024-11-12 11:53:44,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:53:44,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:53:44,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:44,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:53:44,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:53:44,283 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) [2024-11-12 11:53:44,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:44,375 INFO L93 Difference]: Finished difference Result 844 states and 1232 transitions. [2024-11-12 11:53:44,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:53:44,376 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 [2024-11-12 11:53:44,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:44,378 INFO L225 Difference]: With dead ends: 844 [2024-11-12 11:53:44,379 INFO L226 Difference]: Without dead ends: 425 [2024-11-12 11:53:44,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:53:44,382 INFO L435 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 [2024-11-12 11:53:44,382 INFO L436 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] [2024-11-12 11:53:44,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-12 11:53:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 422. [2024-11-12 11:53:44,407 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) [2024-11-12 11:53:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 609 transitions. [2024-11-12 11:53:44,410 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 609 transitions. Word has length 156 [2024-11-12 11:53:44,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:44,411 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 609 transitions. [2024-11-12 11:53:44,411 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) [2024-11-12 11:53:44,411 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 609 transitions. [2024-11-12 11:53:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-12 11:53:44,419 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:44,420 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:53:44,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 11:53:44,420 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:44,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:44,420 INFO L85 PathProgramCache]: Analyzing trace with hash -90991759, now seen corresponding path program 1 times [2024-11-12 11:53:44,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:44,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146553686] [2024-11-12 11:53:44,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:44,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:53:44,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:44,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146553686] [2024-11-12 11:53:44,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146553686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:53:44,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:53:44,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 11:53:44,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200221941] [2024-11-12 11:53:44,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:53:44,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 11:53:44,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:44,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 11:53:44,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 11:53:44,669 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) [2024-11-12 11:53:44,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:44,730 INFO L93 Difference]: Finished difference Result 970 states and 1404 transitions. [2024-11-12 11:53:44,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 11:53:44,732 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 [2024-11-12 11:53:44,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:44,734 INFO L225 Difference]: With dead ends: 970 [2024-11-12 11:53:44,734 INFO L226 Difference]: Without dead ends: 551 [2024-11-12 11:53:44,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 11:53:44,736 INFO L435 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 [2024-11-12 11:53:44,736 INFO L436 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] [2024-11-12 11:53:44,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-12 11:53:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-11-12 11:53:44,747 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) [2024-11-12 11:53:44,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 797 transitions. [2024-11-12 11:53:44,749 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 797 transitions. Word has length 156 [2024-11-12 11:53:44,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:44,749 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 797 transitions. [2024-11-12 11:53:44,750 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) [2024-11-12 11:53:44,750 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 797 transitions. [2024-11-12 11:53:44,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-12 11:53:44,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:44,752 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:53:44,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 11:53:44,752 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:44,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:44,753 INFO L85 PathProgramCache]: Analyzing trace with hash 615861504, now seen corresponding path program 1 times [2024-11-12 11:53:44,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:44,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672485357] [2024-11-12 11:53:44,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:44,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:45,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 11:53:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:45,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-12 11:53:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:53:45,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:45,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672485357] [2024-11-12 11:53:45,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672485357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:53:45,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:53:45,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 11:53:45,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876820576] [2024-11-12 11:53:45,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:53:45,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 11:53:45,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:45,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 11:53:45,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:53:45,079 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) [2024-11-12 11:53:45,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:45,511 INFO L93 Difference]: Finished difference Result 931 states and 1346 transitions. [2024-11-12 11:53:45,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:53:45,512 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 [2024-11-12 11:53:45,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:45,514 INFO L225 Difference]: With dead ends: 931 [2024-11-12 11:53:45,515 INFO L226 Difference]: Without dead ends: 512 [2024-11-12 11:53:45,517 INFO L434 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 [2024-11-12 11:53:45,518 INFO L435 NwaCegarLoop]: 497 mSDtfsCounter, 44 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:45,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1843 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 11:53:45,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-12 11:53:45,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 509. [2024-11-12 11:53:45,533 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) [2024-11-12 11:53:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 720 transitions. [2024-11-12 11:53:45,565 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 720 transitions. Word has length 171 [2024-11-12 11:53:45,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:45,566 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 720 transitions. [2024-11-12 11:53:45,566 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) [2024-11-12 11:53:45,566 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 720 transitions. [2024-11-12 11:53:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-12 11:53:45,569 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:45,569 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:53:45,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 11:53:45,570 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:45,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1132381164, now seen corresponding path program 1 times [2024-11-12 11:53:45,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:45,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589185837] [2024-11-12 11:53:45,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:45,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:45,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 11:53:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:45,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-12 11:53:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:45,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:53:45,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:45,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589185837] [2024-11-12 11:53:45,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589185837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:53:45,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:53:45,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 11:53:45,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678078346] [2024-11-12 11:53:45,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:53:45,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 11:53:45,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:45,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 11:53:45,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:53:45,810 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) [2024-11-12 11:53:46,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:46,158 INFO L93 Difference]: Finished difference Result 883 states and 1252 transitions. [2024-11-12 11:53:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:53:46,159 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 [2024-11-12 11:53:46,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:46,162 INFO L225 Difference]: With dead ends: 883 [2024-11-12 11:53:46,162 INFO L226 Difference]: Without dead ends: 506 [2024-11-12 11:53:46,164 INFO L434 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 [2024-11-12 11:53:46,165 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 17 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:46,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1850 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:53:46,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-11-12 11:53:46,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 503. [2024-11-12 11:53:46,181 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) [2024-11-12 11:53:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 710 transitions. [2024-11-12 11:53:46,184 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 710 transitions. Word has length 171 [2024-11-12 11:53:46,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:46,186 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 710 transitions. [2024-11-12 11:53:46,186 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) [2024-11-12 11:53:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 710 transitions. [2024-11-12 11:53:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-12 11:53:46,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:46,188 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:53:46,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 11:53:46,189 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:46,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:46,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2007390964, now seen corresponding path program 1 times [2024-11-12 11:53:46,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:46,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426153888] [2024-11-12 11:53:46,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:46,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:46,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 11:53:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:46,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-12 11:53:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:46,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:53:46,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:46,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426153888] [2024-11-12 11:53:46,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426153888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:53:46,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:53:46,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:53:46,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447283973] [2024-11-12 11:53:46,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:53:46,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:53:46,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:46,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:53:46,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:53:46,490 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) [2024-11-12 11:53:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:46,828 INFO L93 Difference]: Finished difference Result 1017 states and 1429 transitions. [2024-11-12 11:53:46,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:53:46,829 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 [2024-11-12 11:53:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:46,832 INFO L225 Difference]: With dead ends: 1017 [2024-11-12 11:53:46,833 INFO L226 Difference]: Without dead ends: 646 [2024-11-12 11:53:46,834 INFO L434 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 [2024-11-12 11:53:46,835 INFO L435 NwaCegarLoop]: 514 mSDtfsCounter, 247 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:46,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1414 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:53:46,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-11-12 11:53:46,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 643. [2024-11-12 11:53:46,852 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) [2024-11-12 11:53:46,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 897 transitions. [2024-11-12 11:53:46,854 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 897 transitions. Word has length 171 [2024-11-12 11:53:46,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:46,855 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 897 transitions. [2024-11-12 11:53:46,855 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) [2024-11-12 11:53:46,855 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 897 transitions. [2024-11-12 11:53:46,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-12 11:53:46,857 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:46,857 INFO L218 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] [2024-11-12 11:53:46,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 11:53:46,858 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:46,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:46,858 INFO L85 PathProgramCache]: Analyzing trace with hash 213489751, now seen corresponding path program 1 times [2024-11-12 11:53:46,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:46,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311381852] [2024-11-12 11:53:46,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:46,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:47,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 11:53:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:47,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-12 11:53:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:47,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-11-12 11:53:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:47,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-12 11:53:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:47,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:47,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311381852] [2024-11-12 11:53:47,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311381852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:53:47,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299806738] [2024-11-12 11:53:47,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:47,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:53:47,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:53:47,195 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) [2024-11-12 11:53:47,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 11:53:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:47,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-12 11:53:47,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:53:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:47,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 11:53:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:48,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299806738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 11:53:48,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 11:53:48,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-12 11:53:48,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019393460] [2024-11-12 11:53:48,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 11:53:48,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 11:53:48,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:48,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 11:53:48,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-12 11:53:48,079 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) [2024-11-12 11:53:48,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:48,500 INFO L93 Difference]: Finished difference Result 1412 states and 1988 transitions. [2024-11-12 11:53:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 11:53:48,500 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 [2024-11-12 11:53:48,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:48,505 INFO L225 Difference]: With dead ends: 1412 [2024-11-12 11:53:48,505 INFO L226 Difference]: Without dead ends: 1381 [2024-11-12 11:53:48,506 INFO L434 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 [2024-11-12 11:53:48,507 INFO L435 NwaCegarLoop]: 598 mSDtfsCounter, 2076 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:48,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 2618 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 11:53:48,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2024-11-12 11:53:48,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1378. [2024-11-12 11:53:48,533 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) [2024-11-12 11:53:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1908 transitions. [2024-11-12 11:53:48,537 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1908 transitions. Word has length 186 [2024-11-12 11:53:48,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:48,538 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1908 transitions. [2024-11-12 11:53:48,538 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) [2024-11-12 11:53:48,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1908 transitions. [2024-11-12 11:53:48,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2024-11-12 11:53:48,547 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:48,547 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-12 11:53:48,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 11:53:48,748 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 [2024-11-12 11:53:48,749 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:48,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1121082786, now seen corresponding path program 1 times [2024-11-12 11:53:48,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:48,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118066105] [2024-11-12 11:53:48,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:48,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:50,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 11:53:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:50,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-12 11:53:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:50,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-11-12 11:53:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:50,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-12 11:53:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:50,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:50,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118066105] [2024-11-12 11:53:50,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118066105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:53:50,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30707122] [2024-11-12 11:53:50,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:50,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:53:50,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:53:50,112 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) [2024-11-12 11:53:50,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 11:53:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:51,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 11:53:51,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:53:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:52,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 11:53:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:53,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30707122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 11:53:53,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 11:53:53,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-12 11:53:53,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438601497] [2024-11-12 11:53:53,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 11:53:53,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 11:53:53,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:53,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 11:53:53,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-12 11:53:53,313 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) [2024-11-12 11:53:54,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:54,335 INFO L93 Difference]: Finished difference Result 3428 states and 4811 transitions. [2024-11-12 11:53:54,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 11:53:54,336 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 [2024-11-12 11:53:54,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:54,347 INFO L225 Difference]: With dead ends: 3428 [2024-11-12 11:53:54,348 INFO L226 Difference]: Without dead ends: 3397 [2024-11-12 11:53:54,349 INFO L434 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 [2024-11-12 11:53:54,350 INFO L435 NwaCegarLoop]: 684 mSDtfsCounter, 4715 mSDsluCounter, 5993 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4819 SdHoareTripleChecker+Valid, 6677 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:54,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4819 Valid, 6677 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-12 11:53:54,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2024-11-12 11:53:54,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3394. [2024-11-12 11:53:54,407 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) [2024-11-12 11:53:54,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 4692 transitions. [2024-11-12 11:53:54,418 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 4692 transitions. Word has length 624 [2024-11-12 11:53:54,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:54,419 INFO L471 AbstractCegarLoop]: Abstraction has 3394 states and 4692 transitions. [2024-11-12 11:53:54,419 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) [2024-11-12 11:53:54,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 4692 transitions. [2024-11-12 11:53:54,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1501 [2024-11-12 11:53:54,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:54,465 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2024-11-12 11:53:54,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 11:53:54,668 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 [2024-11-12 11:53:54,669 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:54,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:54,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1574201992, now seen corresponding path program 2 times [2024-11-12 11:53:54,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:54,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79647748] [2024-11-12 11:53:54,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:54,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms