./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 16:30:12,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 16:30:12,364 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 16:30:12,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 16:30:12,369 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 16:30:12,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 16:30:12,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 16:30:12,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 16:30:12,389 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 16:30:12,389 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 16:30:12,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 16:30:12,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 16:30:12,390 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 16:30:12,391 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 16:30:12,392 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 16:30:12,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 16:30:12,393 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 16:30:12,393 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 16:30:12,395 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 16:30:12,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 16:30:12,396 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 16:30:12,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 16:30:12,396 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 16:30:12,397 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 16:30:12,397 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 16:30:12,397 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 16:30:12,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 16:30:12,398 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 16:30:12,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 16:30:12,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 16:30:12,398 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 16:30:12,399 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 16:30:12,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:30:12,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 16:30:12,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 16:30:12,400 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 16:30:12,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 16:30:12,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 16:30:12,401 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 16:30:12,401 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 16:30:12,402 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 16:30:12,402 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 16:30:12,402 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2024-10-11 16:30:12,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 16:30:12,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 16:30:12,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 16:30:12,664 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 16:30:12,664 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 16:30:12,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2024-10-11 16:30:14,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 16:30:14,415 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 16:30:14,416 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2024-10-11 16:30:14,441 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/64bf8f472/d651ef6b78e94390acf05214f66e0b86/FLAG9e7081337 [2024-10-11 16:30:14,694 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/64bf8f472/d651ef6b78e94390acf05214f66e0b86 [2024-10-11 16:30:14,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 16:30:14,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 16:30:14,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 16:30:14,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 16:30:14,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 16:30:14,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:30:14" (1/1) ... [2024-10-11 16:30:14,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e708933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:14, skipping insertion in model container [2024-10-11 16:30:14,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:30:14" (1/1) ... [2024-10-11 16:30:14,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 16:30:15,140 WARN L248 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_test1-2.i[33021,33034] [2024-10-11 16:30:15,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:30:15,242 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 16:30:15,286 WARN L248 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_test1-2.i[33021,33034] [2024-10-11 16:30:15,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:30:15,373 INFO L204 MainTranslator]: Completed translation [2024-10-11 16:30:15,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:15 WrapperNode [2024-10-11 16:30:15,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 16:30:15,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 16:30:15,375 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 16:30:15,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 16:30:15,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:15" (1/1) ... [2024-10-11 16:30:15,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:15" (1/1) ... [2024-10-11 16:30:15,456 INFO L138 Inliner]: procedures = 176, calls = 230, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1004 [2024-10-11 16:30:15,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 16:30:15,457 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 16:30:15,457 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 16:30:15,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 16:30:15,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:15" (1/1) ... [2024-10-11 16:30:15,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:15" (1/1) ... [2024-10-11 16:30:15,479 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:15" (1/1) ... [2024-10-11 16:30:15,546 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2024-10-11 16:30:15,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:15" (1/1) ... [2024-10-11 16:30:15,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:15" (1/1) ... [2024-10-11 16:30:15,588 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:15" (1/1) ... [2024-10-11 16:30:15,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:15" (1/1) ... [2024-10-11 16:30:15,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:15" (1/1) ... [2024-10-11 16:30:15,653 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:15" (1/1) ... [2024-10-11 16:30:15,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 16:30:15,664 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 16:30:15,664 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 16:30:15,664 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 16:30:15,665 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:15" (1/1) ... [2024-10-11 16:30:15,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:30:15,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:30:15,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 16:30:15,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 16:30:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 16:30:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 16:30:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 16:30:15,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 16:30:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 16:30:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 16:30:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-11 16:30:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-11 16:30:15,795 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-11 16:30:15,795 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-11 16:30:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 16:30:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 16:30:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 16:30:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 16:30:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 16:30:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 16:30:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 16:30:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 16:30:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 16:30:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 16:30:15,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 16:30:15,981 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 16:30:15,984 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 16:30:17,079 INFO L? ?]: Removed 233 outVars from TransFormulas that were not future-live. [2024-10-11 16:30:17,079 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 16:30:17,128 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 16:30:17,129 INFO L314 CfgBuilder]: Removed 40 assume(true) statements. [2024-10-11 16:30:17,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:30:17 BoogieIcfgContainer [2024-10-11 16:30:17,129 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 16:30:17,134 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 16:30:17,134 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 16:30:17,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 16:30:17,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:30:14" (1/3) ... [2024-10-11 16:30:17,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267b2861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:30:17, skipping insertion in model container [2024-10-11 16:30:17,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:30:15" (2/3) ... [2024-10-11 16:30:17,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267b2861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:30:17, skipping insertion in model container [2024-10-11 16:30:17,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:30:17" (3/3) ... [2024-10-11 16:30:17,141 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-2.i [2024-10-11 16:30:17,157 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 16:30:17,157 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 16:30:17,227 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:30:17,237 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;@15ecf599, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:30:17,237 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 16:30:17,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 246 states have (on average 1.6341463414634145) internal successors, (402), 257 states have internal predecessors, (402), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 16:30:17,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-11 16:30:17,252 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:30:17,253 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:30:17,253 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:30:17,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:30:17,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1205597257, now seen corresponding path program 1 times [2024-10-11 16:30:17,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:30:17,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027758391] [2024-10-11 16:30:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:30:17,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:30:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:30:17,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:30:17,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:30:17,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027758391] [2024-10-11 16:30:17,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027758391] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:30:17,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:30:17,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:30:17,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797427213] [2024-10-11 16:30:17,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:30:17,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:30:17,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:30:17,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:30:17,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:30:17,447 INFO L87 Difference]: Start difference. First operand has 263 states, 246 states have (on average 1.6341463414634145) internal successors, (402), 257 states have internal predecessors, (402), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-11 16:30:17,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:30:17,524 INFO L93 Difference]: Finished difference Result 525 states and 865 transitions. [2024-10-11 16:30:17,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:30:17,530 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2024-10-11 16:30:17,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:30:17,539 INFO L225 Difference]: With dead ends: 525 [2024-10-11 16:30:17,540 INFO L226 Difference]: Without dead ends: 227 [2024-10-11 16:30:17,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:30:17,546 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 16:30:17,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 378 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 16:30:17,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-11 16:30:17,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2024-10-11 16:30:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 211 states have (on average 1.4597156398104265) internal successors, (308), 221 states have internal predecessors, (308), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 16:30:17,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 334 transitions. [2024-10-11 16:30:17,593 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 334 transitions. Word has length 9 [2024-10-11 16:30:17,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:30:17,594 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 334 transitions. [2024-10-11 16:30:17,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-11 16:30:17,594 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 334 transitions. [2024-10-11 16:30:17,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-11 16:30:17,596 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:30:17,596 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:30:17,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 16:30:17,596 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:30:17,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:30:17,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2024028022, now seen corresponding path program 1 times [2024-10-11 16:30:17,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:30:17,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775402127] [2024-10-11 16:30:17,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:30:17,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:30:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:30:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:30:17,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:30:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775402127] [2024-10-11 16:30:17,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775402127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:30:17,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:30:17,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:30:17,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358064672] [2024-10-11 16:30:17,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:30:17,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:30:17,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:30:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:30:17,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:30:17,690 INFO L87 Difference]: Start difference. First operand 227 states and 334 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-11 16:30:17,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:30:17,762 INFO L93 Difference]: Finished difference Result 450 states and 664 transitions. [2024-10-11 16:30:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:30:17,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2024-10-11 16:30:17,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:30:17,769 INFO L225 Difference]: With dead ends: 450 [2024-10-11 16:30:17,769 INFO L226 Difference]: Without dead ends: 421 [2024-10-11 16:30:17,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:30:17,772 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 274 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 16:30:17,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 698 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 16:30:17,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-10-11 16:30:17,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 228. [2024-10-11 16:30:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 212 states have (on average 1.4575471698113207) internal successors, (309), 222 states have internal predecessors, (309), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 16:30:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 335 transitions. [2024-10-11 16:30:17,803 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 335 transitions. Word has length 9 [2024-10-11 16:30:17,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:30:17,803 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 335 transitions. [2024-10-11 16:30:17,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-11 16:30:17,804 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 335 transitions. [2024-10-11 16:30:17,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-11 16:30:17,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:30:17,807 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:30:17,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 16:30:17,807 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:30:17,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:30:17,808 INFO L85 PathProgramCache]: Analyzing trace with hash 782573354, now seen corresponding path program 1 times [2024-10-11 16:30:17,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:30:17,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101269964] [2024-10-11 16:30:17,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:30:17,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:30:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:30:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:30:18,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:30:18,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101269964] [2024-10-11 16:30:18,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101269964] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:30:18,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:30:18,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 16:30:18,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498549279] [2024-10-11 16:30:18,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:30:18,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:30:18,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:30:18,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:30:18,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 16:30:18,203 INFO L87 Difference]: Start difference. First operand 228 states and 335 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-11 16:30:18,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:30:18,314 INFO L93 Difference]: Finished difference Result 457 states and 671 transitions. [2024-10-11 16:30:18,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 16:30:18,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 84 [2024-10-11 16:30:18,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:30:18,320 INFO L225 Difference]: With dead ends: 457 [2024-10-11 16:30:18,320 INFO L226 Difference]: Without dead ends: 231 [2024-10-11 16:30:18,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 16:30:18,322 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 105 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 16:30:18,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 818 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 16:30:18,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-10-11 16:30:18,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2024-10-11 16:30:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 212 states have (on average 1.4245283018867925) internal successors, (302), 222 states have internal predecessors, (302), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 16:30:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 328 transitions. [2024-10-11 16:30:18,341 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 328 transitions. Word has length 84 [2024-10-11 16:30:18,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:30:18,342 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 328 transitions. [2024-10-11 16:30:18,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-11 16:30:18,342 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 328 transitions. [2024-10-11 16:30:18,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-11 16:30:18,345 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:30:18,345 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:30:18,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 16:30:18,346 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:30:18,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:30:18,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1807075382, now seen corresponding path program 1 times [2024-10-11 16:30:18,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:30:18,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660739932] [2024-10-11 16:30:18,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:30:18,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:30:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:30:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:30:18,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:30:18,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660739932] [2024-10-11 16:30:18,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660739932] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:30:18,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:30:18,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:30:18,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194618857] [2024-10-11 16:30:18,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:30:18,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:30:18,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:30:18,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:30:18,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:30:18,593 INFO L87 Difference]: Start difference. First operand 228 states and 328 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2024-10-11 16:30:18,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:30:18,660 INFO L93 Difference]: Finished difference Result 583 states and 843 transitions. [2024-10-11 16:30:18,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:30:18,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 84 [2024-10-11 16:30:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:30:18,665 INFO L225 Difference]: With dead ends: 583 [2024-10-11 16:30:18,665 INFO L226 Difference]: Without dead ends: 357 [2024-10-11 16:30:18,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:30:18,670 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 134 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 16:30:18,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 639 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 16:30:18,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-10-11 16:30:18,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2024-10-11 16:30:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 341 states have (on average 1.436950146627566) internal successors, (490), 351 states have internal predecessors, (490), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 16:30:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 516 transitions. [2024-10-11 16:30:18,695 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 516 transitions. Word has length 84 [2024-10-11 16:30:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:30:18,696 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 516 transitions. [2024-10-11 16:30:18,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2024-10-11 16:30:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 516 transitions. [2024-10-11 16:30:18,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-11 16:30:18,700 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:30:18,700 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 16:30:18,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 16:30:18,701 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:30:18,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:30:18,705 INFO L85 PathProgramCache]: Analyzing trace with hash -563635627, now seen corresponding path program 1 times [2024-10-11 16:30:18,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:30:18,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898231697] [2024-10-11 16:30:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:30:18,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:30:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:30:19,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 16:30:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:30:19,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:30:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:30:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:30:19,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:30:19,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898231697] [2024-10-11 16:30:19,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898231697] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:30:19,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230134485] [2024-10-11 16:30:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:30:19,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:30:19,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:30:19,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:30:19,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 16:30:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:30:19,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 16:30:19,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:30:19,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:30:19,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:30:19,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:30:19,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230134485] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:30:19,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:30:19,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-10-11 16:30:19,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898903098] [2024-10-11 16:30:19,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:30:19,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 16:30:19,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:30:19,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 16:30:19,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-11 16:30:19,654 INFO L87 Difference]: Start difference. First operand 357 states and 516 transitions. Second operand has 8 states, 8 states have (on average 31.75) internal successors, (254), 7 states have internal predecessors, (254), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-11 16:30:20,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:30:20,026 INFO L93 Difference]: Finished difference Result 839 states and 1212 transitions. [2024-10-11 16:30:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 16:30:20,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.75) internal successors, (254), 7 states have internal predecessors, (254), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 97 [2024-10-11 16:30:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:30:20,034 INFO L225 Difference]: With dead ends: 839 [2024-10-11 16:30:20,034 INFO L226 Difference]: Without dead ends: 810 [2024-10-11 16:30:20,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-11 16:30:20,036 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 1865 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 16:30:20,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 1505 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 16:30:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2024-10-11 16:30:20,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 808. [2024-10-11 16:30:20,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 783 states have (on average 1.408684546615581) internal successors, (1103), 793 states have internal predecessors, (1103), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-11 16:30:20,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1147 transitions. [2024-10-11 16:30:20,061 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1147 transitions. Word has length 97 [2024-10-11 16:30:20,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:30:20,065 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1147 transitions. [2024-10-11 16:30:20,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.75) internal successors, (254), 7 states have internal predecessors, (254), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-11 16:30:20,065 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1147 transitions. [2024-10-11 16:30:20,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-10-11 16:30:20,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:30:20,074 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:30:20,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 16:30:20,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:30:20,275 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:30:20,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:30:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1908137271, now seen corresponding path program 1 times [2024-10-11 16:30:20,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:30:20,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645839983] [2024-10-11 16:30:20,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:30:20,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:30:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:30:21,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 16:30:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:30:21,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 16:30:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:30:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:30:21,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:30:21,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645839983] [2024-10-11 16:30:21,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645839983] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:30:21,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693213700] [2024-10-11 16:30:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:30:21,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:30:21,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:30:21,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:30:21,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 16:30:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:30:21,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 16:30:21,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:30:22,292 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:30:22,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:30:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:30:22,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693213700] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:30:22,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:30:22,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-10-11 16:30:22,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260465422] [2024-10-11 16:30:22,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:30:22,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 16:30:22,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:30:22,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 16:30:22,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-10-11 16:30:22,703 INFO L87 Difference]: Start difference. First operand 808 states and 1147 transitions. Second operand has 14 states, 14 states have (on average 50.285714285714285) internal successors, (704), 13 states have internal predecessors, (704), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-11 16:30:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:30:23,245 INFO L93 Difference]: Finished difference Result 2003 states and 2877 transitions. [2024-10-11 16:30:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 16:30:23,247 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 50.285714285714285) internal successors, (704), 13 states have internal predecessors, (704), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 322 [2024-10-11 16:30:23,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:30:23,259 INFO L225 Difference]: With dead ends: 2003 [2024-10-11 16:30:23,259 INFO L226 Difference]: Without dead ends: 1974 [2024-10-11 16:30:23,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-10-11 16:30:23,264 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 4926 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4978 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 16:30:23,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4978 Valid, 3198 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 16:30:23,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2024-10-11 16:30:23,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1972. [2024-10-11 16:30:23,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1929 states have (on average 1.4053913945049248) internal successors, (2711), 1939 states have internal predecessors, (2711), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-11 16:30:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2791 transitions. [2024-10-11 16:30:23,320 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2791 transitions. Word has length 322 [2024-10-11 16:30:23,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:30:23,321 INFO L471 AbstractCegarLoop]: Abstraction has 1972 states and 2791 transitions. [2024-10-11 16:30:23,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 50.285714285714285) internal successors, (704), 13 states have internal predecessors, (704), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-11 16:30:23,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2791 transitions. [2024-10-11 16:30:23,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2024-10-11 16:30:23,340 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:30:23,340 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:30:23,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 16:30:23,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:30:23,541 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:30:23,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:30:23,542 INFO L85 PathProgramCache]: Analyzing trace with hash -867708681, now seen corresponding path program 2 times [2024-10-11 16:30:23,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:30:23,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683832270] [2024-10-11 16:30:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:30:23,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms