./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash a7b742cc0d0eaef445a8f90399cbd092d4cb10efae03dcad0c8e37a0643e7fd6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 05:13:45,229 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 05:13:45,299 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-11 05:13:45,305 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 05:13:45,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 05:13:45,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 05:13:45,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 05:13:45,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 05:13:45,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 05:13:45,342 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 05:13:45,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 05:13:45,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 05:13:45,343 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 05:13:45,344 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 05:13:45,346 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 05:13:45,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 05:13:45,347 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 05:13:45,347 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 05:13:45,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 05:13:45,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 05:13:45,351 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 05:13:45,351 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 05:13:45,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 05:13:45,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 05:13:45,352 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 05:13:45,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 05:13:45,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 05:13:45,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 05:13:45,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 05:13:45,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 05:13:45,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 05:13:45,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 05:13:45,354 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 05:13:45,354 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 05:13:45,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 05:13:45,355 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 05:13:45,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 05:13:45,355 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 05:13:45,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 05:13:45,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7b742cc0d0eaef445a8f90399cbd092d4cb10efae03dcad0c8e37a0643e7fd6 [2024-10-11 05:13:45,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 05:13:45,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 05:13:45,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 05:13:45,655 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 05:13:45,656 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 05:13:45,657 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2024-10-11 05:13:47,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 05:13:47,394 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 05:13:47,394 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2024-10-11 05:13:47,412 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/042a05690/64ceb6966ea94658a9b7e924334f2583/FLAG300c5b1c5 [2024-10-11 05:13:47,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/042a05690/64ceb6966ea94658a9b7e924334f2583 [2024-10-11 05:13:47,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 05:13:47,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 05:13:47,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 05:13:47,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 05:13:47,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 05:13:47,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:13:47" (1/1) ... [2024-10-11 05:13:47,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@394c53ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:47, skipping insertion in model container [2024-10-11 05:13:47,443 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:13:47" (1/1) ... [2024-10-11 05:13:47,503 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 05:13:47,720 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/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c[1266,1279] [2024-10-11 05:13:48,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 05:13:48,139 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 05:13:48,148 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/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c[1266,1279] [2024-10-11 05:13:48,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 05:13:48,324 INFO L204 MainTranslator]: Completed translation [2024-10-11 05:13:48,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:48 WrapperNode [2024-10-11 05:13:48,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 05:13:48,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 05:13:48,326 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 05:13:48,326 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 05:13:48,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:48" (1/1) ... [2024-10-11 05:13:48,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:48" (1/1) ... [2024-10-11 05:13:48,830 INFO L138 Inliner]: procedures = 18, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3733 [2024-10-11 05:13:48,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 05:13:48,831 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 05:13:48,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 05:13:48,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 05:13:48,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:48" (1/1) ... [2024-10-11 05:13:48,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:48" (1/1) ... [2024-10-11 05:13:49,048 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:48" (1/1) ... [2024-10-11 05:13:49,233 INFO L175 MemorySlicer]: Split 63 memory accesses to 4 slices as follows [2, 8, 29, 24]. 46 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 30 writes are split as follows [0, 4, 14, 12]. [2024-10-11 05:13:49,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:48" (1/1) ... [2024-10-11 05:13:49,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:48" (1/1) ... [2024-10-11 05:13:49,397 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:48" (1/1) ... [2024-10-11 05:13:49,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:48" (1/1) ... [2024-10-11 05:13:49,453 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:48" (1/1) ... [2024-10-11 05:13:49,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:48" (1/1) ... [2024-10-11 05:13:49,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 05:13:49,544 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 05:13:49,544 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 05:13:49,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 05:13:49,545 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:48" (1/1) ... [2024-10-11 05:13:49,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 05:13:49,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:13:49,580 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 05:13:49,583 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 05:13:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 05:13:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-11 05:13:49,630 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-11 05:13:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 05:13:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 05:13:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 05:13:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 05:13:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 05:13:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 05:13:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 05:13:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 05:13:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 05:13:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 05:13:49,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 05:13:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 05:13:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 05:13:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 05:13:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 05:13:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 05:13:50,101 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 05:13:50,104 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 05:13:53,425 INFO L? ?]: Removed 1909 outVars from TransFormulas that were not future-live. [2024-10-11 05:13:53,425 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 05:13:53,539 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 05:13:53,542 INFO L314 CfgBuilder]: Removed 19 assume(true) statements. [2024-10-11 05:13:53,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:13:53 BoogieIcfgContainer [2024-10-11 05:13:53,542 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 05:13:53,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 05:13:53,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 05:13:53,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 05:13:53,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:13:47" (1/3) ... [2024-10-11 05:13:53,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f06ec20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:13:53, skipping insertion in model container [2024-10-11 05:13:53,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:13:48" (2/3) ... [2024-10-11 05:13:53,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f06ec20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:13:53, skipping insertion in model container [2024-10-11 05:13:53,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:13:53" (3/3) ... [2024-10-11 05:13:53,553 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2024-10-11 05:13:53,569 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 05:13:53,570 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 05:13:53,675 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 05:13:53,682 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;@4bc864d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 05:13:53,682 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 05:13:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 1128 states, 1120 states have (on average 1.5133928571428572) internal successors, (1695), 1121 states have internal predecessors, (1695), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 05:13:53,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-10-11 05:13:53,715 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:13:53,716 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:53,716 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:13:53,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:13:53,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1419869946, now seen corresponding path program 1 times [2024-10-11 05:13:53,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:13:53,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977482124] [2024-10-11 05:13:53,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:13:53,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:13:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:54,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-10-11 05:13:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:54,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-10-11 05:13:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:54,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-11 05:13:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:54,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-10-11 05:13:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:54,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-10-11 05:13:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 05:13:54,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:13:54,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977482124] [2024-10-11 05:13:54,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977482124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:13:54,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 05:13:54,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 05:13:54,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398381780] [2024-10-11 05:13:54,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:13:54,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 05:13:54,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:13:54,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 05:13:54,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 05:13:54,564 INFO L87 Difference]: Start difference. First operand has 1128 states, 1120 states have (on average 1.5133928571428572) internal successors, (1695), 1121 states have internal predecessors, (1695), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 05:13:54,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:13:54,702 INFO L93 Difference]: Finished difference Result 2249 states and 3405 transitions. [2024-10-11 05:13:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 05:13:54,705 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 334 [2024-10-11 05:13:54,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:13:54,729 INFO L225 Difference]: With dead ends: 2249 [2024-10-11 05:13:54,729 INFO L226 Difference]: Without dead ends: 1127 [2024-10-11 05:13:54,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 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 05:13:54,738 INFO L432 NwaCegarLoop]: 1665 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 05:13:54,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1665 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 05:13:54,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2024-10-11 05:13:54,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1127. [2024-10-11 05:13:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1120 states have (on average 1.4946428571428572) internal successors, (1674), 1120 states have internal predecessors, (1674), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 05:13:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1684 transitions. [2024-10-11 05:13:54,851 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1684 transitions. Word has length 334 [2024-10-11 05:13:54,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:13:54,855 INFO L471 AbstractCegarLoop]: Abstraction has 1127 states and 1684 transitions. [2024-10-11 05:13:54,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 05:13:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1684 transitions. [2024-10-11 05:13:54,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-10-11 05:13:54,863 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:13:54,863 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:54,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 05:13:54,864 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:13:54,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:13:54,865 INFO L85 PathProgramCache]: Analyzing trace with hash 976040752, now seen corresponding path program 1 times [2024-10-11 05:13:54,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:13:54,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605081275] [2024-10-11 05:13:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:13:54,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:13:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:55,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-10-11 05:13:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:55,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-10-11 05:13:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:55,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-11 05:13:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:55,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-10-11 05:13:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:55,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-10-11 05:13:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 05:13:55,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:13:55,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605081275] [2024-10-11 05:13:55,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605081275] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:13:55,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 05:13:55,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 05:13:55,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602367411] [2024-10-11 05:13:55,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:13:55,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 05:13:55,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:13:55,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 05:13:55,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 05:13:55,621 INFO L87 Difference]: Start difference. First operand 1127 states and 1684 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:13:55,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:13:55,703 INFO L93 Difference]: Finished difference Result 2253 states and 3367 transitions. [2024-10-11 05:13:55,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 05:13:55,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 334 [2024-10-11 05:13:55,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:13:55,710 INFO L225 Difference]: With dead ends: 2253 [2024-10-11 05:13:55,711 INFO L226 Difference]: Without dead ends: 1132 [2024-10-11 05:13:55,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 05:13:55,715 INFO L432 NwaCegarLoop]: 1664 mSDtfsCounter, 6 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3326 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 05:13:55,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3326 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 05:13:55,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2024-10-11 05:13:55,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1128. [2024-10-11 05:13:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1121 states have (on average 1.4942016057091883) internal successors, (1675), 1121 states have internal predecessors, (1675), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 05:13:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1685 transitions. [2024-10-11 05:13:55,745 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1685 transitions. Word has length 334 [2024-10-11 05:13:55,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:13:55,746 INFO L471 AbstractCegarLoop]: Abstraction has 1128 states and 1685 transitions. [2024-10-11 05:13:55,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:13:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1685 transitions. [2024-10-11 05:13:55,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-10-11 05:13:55,751 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:13:55,754 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:55,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 05:13:55,755 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:13:55,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:13:55,755 INFO L85 PathProgramCache]: Analyzing trace with hash 111076941, now seen corresponding path program 1 times [2024-10-11 05:13:55,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:13:55,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17462188] [2024-10-11 05:13:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:13:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:13:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:56,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-11 05:13:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:56,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-10-11 05:13:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:56,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-10-11 05:13:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:56,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-10-11 05:13:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:56,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-10-11 05:13:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 05:13:56,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:13:56,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17462188] [2024-10-11 05:13:56,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17462188] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:13:56,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179515193] [2024-10-11 05:13:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:13:56,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:13:56,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:13:56,377 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 05:13:56,378 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 05:13:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:56,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 05:13:56,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:13:57,041 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 05:13:57,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 05:13:57,104 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-11 05:13:57,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179515193] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 05:13:57,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 05:13:57,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 05:13:57,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297906527] [2024-10-11 05:13:57,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:13:57,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 05:13:57,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:13:57,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 05:13:57,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 05:13:57,110 INFO L87 Difference]: Start difference. First operand 1128 states and 1685 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:13:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:13:57,188 INFO L93 Difference]: Finished difference Result 2070 states and 3092 transitions. [2024-10-11 05:13:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 05:13:57,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 337 [2024-10-11 05:13:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:13:57,194 INFO L225 Difference]: With dead ends: 2070 [2024-10-11 05:13:57,195 INFO L226 Difference]: Without dead ends: 1129 [2024-10-11 05:13:57,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 05:13:57,199 INFO L432 NwaCegarLoop]: 1664 mSDtfsCounter, 6 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 05:13:57,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3320 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 05:13:57,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2024-10-11 05:13:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1129. [2024-10-11 05:13:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1122 states have (on average 1.4937611408199643) internal successors, (1676), 1122 states have internal predecessors, (1676), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 05:13:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1686 transitions. [2024-10-11 05:13:57,223 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1686 transitions. Word has length 337 [2024-10-11 05:13:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:13:57,225 INFO L471 AbstractCegarLoop]: Abstraction has 1129 states and 1686 transitions. [2024-10-11 05:13:57,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:13:57,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1686 transitions. [2024-10-11 05:13:57,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-10-11 05:13:57,229 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:13:57,229 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:57,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 05:13:57,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:13:57,434 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:13:57,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:13:57,435 INFO L85 PathProgramCache]: Analyzing trace with hash 137529801, now seen corresponding path program 1 times [2024-10-11 05:13:57,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:13:57,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498346029] [2024-10-11 05:13:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:13:57,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:13:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:57,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-10-11 05:13:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:57,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-10-11 05:13:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:57,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-10-11 05:13:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:57,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-10-11 05:13:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:57,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-10-11 05:13:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-11 05:13:57,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:13:57,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498346029] [2024-10-11 05:13:57,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498346029] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:13:57,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978197693] [2024-10-11 05:13:57,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:13:57,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:13:57,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:13:57,940 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 05:13:57,942 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 05:13:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:58,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 05:13:58,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:13:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-11 05:13:58,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 05:13:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-11 05:13:58,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978197693] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 05:13:58,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 05:13:58,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 3] total 7 [2024-10-11 05:13:58,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846805559] [2024-10-11 05:13:58,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:13:58,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 05:13:58,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:13:58,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 05:13:58,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 05:13:58,732 INFO L87 Difference]: Start difference. First operand 1129 states and 1686 transitions. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:13:58,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:13:58,865 INFO L93 Difference]: Finished difference Result 2246 states and 3355 transitions. [2024-10-11 05:13:58,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 05:13:58,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 340 [2024-10-11 05:13:58,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:13:58,870 INFO L225 Difference]: With dead ends: 2246 [2024-10-11 05:13:58,871 INFO L226 Difference]: Without dead ends: 1130 [2024-10-11 05:13:58,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 05:13:58,873 INFO L432 NwaCegarLoop]: 1661 mSDtfsCounter, 7 mSDsluCounter, 3310 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4971 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 05:13:58,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4971 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 05:13:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2024-10-11 05:13:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1130. [2024-10-11 05:13:58,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1123 states have (on average 1.4933214603739982) internal successors, (1677), 1123 states have internal predecessors, (1677), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 05:13:58,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1687 transitions. [2024-10-11 05:13:58,905 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1687 transitions. Word has length 340 [2024-10-11 05:13:58,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:13:58,906 INFO L471 AbstractCegarLoop]: Abstraction has 1130 states and 1687 transitions. [2024-10-11 05:13:58,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:13:58,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1687 transitions. [2024-10-11 05:13:58,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-10-11 05:13:58,910 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:13:58,910 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:58,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 05:13:59,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:13:59,115 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:13:59,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:13:59,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1109823619, now seen corresponding path program 1 times [2024-10-11 05:13:59,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:13:59,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525654714] [2024-10-11 05:13:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:13:59,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:13:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:59,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-10-11 05:13:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:59,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-10-11 05:13:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:59,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-10-11 05:13:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:59,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-10-11 05:13:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:59,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-10-11 05:13:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:13:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-11 05:13:59,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:13:59,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525654714] [2024-10-11 05:13:59,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525654714] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:13:59,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486047685] [2024-10-11 05:13:59,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:13:59,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:13:59,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:13:59,637 INFO L229 MonitoredProcess]: Starting monitored process 4 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 05:13:59,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 05:14:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:00,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-11 05:14:00,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-11 05:14:00,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 05:14:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-11 05:14:01,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486047685] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 05:14:01,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 05:14:01,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 9] total 13 [2024-10-11 05:14:01,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40753956] [2024-10-11 05:14:01,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 05:14:01,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 05:14:01,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 05:14:01,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-10-11 05:14:01,042 INFO L87 Difference]: Start difference. First operand 1130 states and 1687 transitions. Second operand has 13 states, 13 states have (on average 44.38461538461539) internal successors, (577), 13 states have internal predecessors, (577), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-10-11 05:14:04,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:04,098 INFO L93 Difference]: Finished difference Result 2262 states and 3378 transitions. [2024-10-11 05:14:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 05:14:04,100 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 44.38461538461539) internal successors, (577), 13 states have internal predecessors, (577), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 343 [2024-10-11 05:14:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:04,105 INFO L225 Difference]: With dead ends: 2262 [2024-10-11 05:14:04,106 INFO L226 Difference]: Without dead ends: 1139 [2024-10-11 05:14:04,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 05:14:04,108 INFO L432 NwaCegarLoop]: 988 mSDtfsCounter, 4302 mSDsluCounter, 5857 mSDsCounter, 0 mSdLazyCounter, 4971 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4307 SdHoareTripleChecker+Valid, 6845 SdHoareTripleChecker+Invalid, 4984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:04,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4307 Valid, 6845 Invalid, 4984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4971 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-11 05:14:04,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2024-10-11 05:14:04,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1135. [2024-10-11 05:14:04,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1128 states have (on average 1.4920212765957446) internal successors, (1683), 1128 states have internal predecessors, (1683), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 05:14:04,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1693 transitions. [2024-10-11 05:14:04,140 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1693 transitions. Word has length 343 [2024-10-11 05:14:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:04,141 INFO L471 AbstractCegarLoop]: Abstraction has 1135 states and 1693 transitions. [2024-10-11 05:14:04,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 44.38461538461539) internal successors, (577), 13 states have internal predecessors, (577), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-10-11 05:14:04,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1693 transitions. [2024-10-11 05:14:04,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-10-11 05:14:04,147 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:04,148 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:04,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 05:14:04,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:04,353 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:04,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:04,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1429131294, now seen corresponding path program 1 times [2024-10-11 05:14:04,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:04,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122484577] [2024-10-11 05:14:04,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:04,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:04,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-10-11 05:14:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:04,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-11 05:14:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:04,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-10-11 05:14:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:04,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-10-11 05:14:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:04,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-10-11 05:14:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-11 05:14:04,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:04,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122484577] [2024-10-11 05:14:04,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122484577] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513964] [2024-10-11 05:14:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:04,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:04,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:04,983 INFO L229 MonitoredProcess]: Starting monitored process 5 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 05:14:04,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 05:14:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:05,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 05:14:05,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-11 05:14:05,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 05:14:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-11 05:14:05,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513964] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 05:14:05,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 05:14:05,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-11 05:14:05,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730159460] [2024-10-11 05:14:05,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 05:14:05,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 05:14:05,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:05,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 05:14:05,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-11 05:14:05,707 INFO L87 Difference]: Start difference. First operand 1135 states and 1693 transitions. Second operand has 9 states, 9 states have (on average 48.111111111111114) internal successors, (433), 9 states have internal predecessors, (433), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-10-11 05:14:05,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:05,880 INFO L93 Difference]: Finished difference Result 2282 states and 3407 transitions. [2024-10-11 05:14:05,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 05:14:05,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 48.111111111111114) internal successors, (433), 9 states have internal predecessors, (433), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 347 [2024-10-11 05:14:05,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:05,885 INFO L225 Difference]: With dead ends: 2282 [2024-10-11 05:14:05,885 INFO L226 Difference]: Without dead ends: 1159 [2024-10-11 05:14:05,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 05:14:05,888 INFO L432 NwaCegarLoop]: 1672 mSDtfsCounter, 44 mSDsluCounter, 9986 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 11658 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:05,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 11658 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 05:14:05,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-10-11 05:14:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1155. [2024-10-11 05:14:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1148 states have (on average 1.490418118466899) internal successors, (1711), 1148 states have internal predecessors, (1711), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 05:14:05,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1721 transitions. [2024-10-11 05:14:05,916 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1721 transitions. Word has length 347 [2024-10-11 05:14:05,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:05,919 INFO L471 AbstractCegarLoop]: Abstraction has 1155 states and 1721 transitions. [2024-10-11 05:14:05,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 48.111111111111114) internal successors, (433), 9 states have internal predecessors, (433), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-10-11 05:14:05,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1721 transitions. [2024-10-11 05:14:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-10-11 05:14:05,922 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:05,922 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:05,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 05:14:06,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-11 05:14:06,123 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:06,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:06,124 INFO L85 PathProgramCache]: Analyzing trace with hash 911629637, now seen corresponding path program 2 times [2024-10-11 05:14:06,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:06,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256864896] [2024-10-11 05:14:06,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:06,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:06,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-10-11 05:14:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:06,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-10-11 05:14:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:06,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-10-11 05:14:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:06,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-10-11 05:14:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:06,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-10-11 05:14:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-11 05:14:06,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:06,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256864896] [2024-10-11 05:14:06,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256864896] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:06,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018030689] [2024-10-11 05:14:06,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 05:14:06,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:06,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:06,684 INFO L229 MonitoredProcess]: Starting monitored process 6 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 05:14:06,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 05:14:07,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 05:14:07,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 05:14:07,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 05:14:07,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-11 05:14:07,650 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 05:14:07,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018030689] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:14:07,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 05:14:07,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-11 05:14:07,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283780934] [2024-10-11 05:14:07,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:07,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 05:14:07,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:07,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 05:14:07,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-11 05:14:07,653 INFO L87 Difference]: Start difference. First operand 1155 states and 1721 transitions. Second operand has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:14:09,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:09,260 INFO L93 Difference]: Finished difference Result 1835 states and 2734 transitions. [2024-10-11 05:14:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 05:14:09,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 359 [2024-10-11 05:14:09,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:09,266 INFO L225 Difference]: With dead ends: 1835 [2024-10-11 05:14:09,266 INFO L226 Difference]: Without dead ends: 1159 [2024-10-11 05:14:09,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-10-11 05:14:09,268 INFO L432 NwaCegarLoop]: 986 mSDtfsCounter, 1431 mSDsluCounter, 3942 mSDsCounter, 0 mSdLazyCounter, 3493 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 4928 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:09,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 4928 Invalid, 3494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3493 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-11 05:14:09,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-10-11 05:14:09,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1159. [2024-10-11 05:14:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1152 states have (on average 1.4887152777777777) internal successors, (1715), 1152 states have internal predecessors, (1715), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 05:14:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1725 transitions. [2024-10-11 05:14:09,295 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1725 transitions. Word has length 359 [2024-10-11 05:14:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:09,296 INFO L471 AbstractCegarLoop]: Abstraction has 1159 states and 1725 transitions. [2024-10-11 05:14:09,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:14:09,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1725 transitions. [2024-10-11 05:14:09,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-10-11 05:14:09,299 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:09,300 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:09,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 05:14:09,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:09,501 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:09,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:09,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1802555162, now seen corresponding path program 1 times [2024-10-11 05:14:09,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:09,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887429181] [2024-10-11 05:14:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:09,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:10,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-10-11 05:14:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:10,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-10-11 05:14:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:10,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-10-11 05:14:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:10,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-10-11 05:14:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:10,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-10-11 05:14:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-11 05:14:10,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:10,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887429181] [2024-10-11 05:14:10,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887429181] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:10,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184084428] [2024-10-11 05:14:10,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:10,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:10,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:10,026 INFO L229 MonitoredProcess]: Starting monitored process 7 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 05:14:10,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 05:14:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:10,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 1238 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 05:14:10,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-11 05:14:10,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 05:14:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-11 05:14:10,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184084428] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 05:14:10,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 05:14:10,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 10] total 15 [2024-10-11 05:14:10,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753345160] [2024-10-11 05:14:10,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 05:14:10,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 05:14:10,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:10,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 05:14:10,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-10-11 05:14:10,828 INFO L87 Difference]: Start difference. First operand 1159 states and 1725 transitions. Second operand has 15 states, 15 states have (on average 23.733333333333334) internal successors, (356), 15 states have internal predecessors, (356), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-10-11 05:14:11,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:11,018 INFO L93 Difference]: Finished difference Result 2310 states and 3440 transitions. [2024-10-11 05:14:11,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 05:14:11,019 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 23.733333333333334) internal successors, (356), 15 states have internal predecessors, (356), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 360 [2024-10-11 05:14:11,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:11,023 INFO L225 Difference]: With dead ends: 2310 [2024-10-11 05:14:11,023 INFO L226 Difference]: Without dead ends: 1168 [2024-10-11 05:14:11,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-10-11 05:14:11,025 INFO L432 NwaCegarLoop]: 1678 mSDtfsCounter, 69 mSDsluCounter, 13390 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 15068 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:11,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 15068 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 05:14:11,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-10-11 05:14:11,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1164. [2024-10-11 05:14:11,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1157 states have (on average 1.4883318928262748) internal successors, (1722), 1157 states have internal predecessors, (1722), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 05:14:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1732 transitions. [2024-10-11 05:14:11,052 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1732 transitions. Word has length 360 [2024-10-11 05:14:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:11,053 INFO L471 AbstractCegarLoop]: Abstraction has 1164 states and 1732 transitions. [2024-10-11 05:14:11,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.733333333333334) internal successors, (356), 15 states have internal predecessors, (356), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-10-11 05:14:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1732 transitions. [2024-10-11 05:14:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2024-10-11 05:14:11,056 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:11,056 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:11,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 05:14:11,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 05:14:11,257 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:11,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:11,258 INFO L85 PathProgramCache]: Analyzing trace with hash -223999549, now seen corresponding path program 2 times [2024-10-11 05:14:11,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:11,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056014906] [2024-10-11 05:14:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:11,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:11,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-10-11 05:14:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:11,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-10-11 05:14:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:11,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-10-11 05:14:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:11,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-10-11 05:14:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:11,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-10-11 05:14:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:11,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:11,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056014906] [2024-10-11 05:14:11,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056014906] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:11,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018857568] [2024-10-11 05:14:11,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 05:14:11,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:11,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:11,681 INFO L229 MonitoredProcess]: Starting monitored process 8 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 05:14:11,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 05:14:12,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 05:14:12,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 05:14:12,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-11 05:14:12,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-11 05:14:13,130 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 05:14:13,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018857568] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:14:13,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 05:14:13,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-11 05:14:13,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156435867] [2024-10-11 05:14:13,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:13,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 05:14:13,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:13,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 05:14:13,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 05:14:13,136 INFO L87 Difference]: Start difference. First operand 1164 states and 1732 transitions. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 3 states have internal predecessors, (323), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:14:14,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:14,012 INFO L93 Difference]: Finished difference Result 1844 states and 2743 transitions. [2024-10-11 05:14:14,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 05:14:14,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 3 states have internal predecessors, (323), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 363 [2024-10-11 05:14:14,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:14,017 INFO L225 Difference]: With dead ends: 1844 [2024-10-11 05:14:14,018 INFO L226 Difference]: Without dead ends: 1164 [2024-10-11 05:14:14,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 05:14:14,020 INFO L432 NwaCegarLoop]: 972 mSDtfsCounter, 1426 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:14,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 1935 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 05:14:14,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2024-10-11 05:14:14,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1164. [2024-10-11 05:14:14,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1157 states have (on average 1.487467588591184) internal successors, (1721), 1157 states have internal predecessors, (1721), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 05:14:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1731 transitions. [2024-10-11 05:14:14,045 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1731 transitions. Word has length 363 [2024-10-11 05:14:14,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:14,046 INFO L471 AbstractCegarLoop]: Abstraction has 1164 states and 1731 transitions. [2024-10-11 05:14:14,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 3 states have internal predecessors, (323), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:14:14,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1731 transitions. [2024-10-11 05:14:14,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-10-11 05:14:14,048 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:14,048 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:14,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 05:14:14,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:14,253 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:14,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:14,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1156821368, now seen corresponding path program 1 times [2024-10-11 05:14:14,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:14,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326101443] [2024-10-11 05:14:14,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:14,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:14,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-10-11 05:14:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:14,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-10-11 05:14:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:14,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-10-11 05:14:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:14,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-10-11 05:14:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:14,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-10-11 05:14:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:14,826 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:14,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:14,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326101443] [2024-10-11 05:14:14,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326101443] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:14,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138168465] [2024-10-11 05:14:14,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:14,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:14,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:14,829 INFO L229 MonitoredProcess]: Starting monitored process 9 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 05:14:14,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 05:14:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:15,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 05:14:15,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-11 05:14:15,615 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 05:14:15,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138168465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:14:15,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 05:14:15,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-10-11 05:14:15,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682432088] [2024-10-11 05:14:15,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:15,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 05:14:15,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:15,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 05:14:15,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 05:14:15,619 INFO L87 Difference]: Start difference. First operand 1164 states and 1731 transitions. Second operand has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:14:16,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:16,492 INFO L93 Difference]: Finished difference Result 2260 states and 3357 transitions. [2024-10-11 05:14:16,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 05:14:16,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 364 [2024-10-11 05:14:16,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:16,499 INFO L225 Difference]: With dead ends: 2260 [2024-10-11 05:14:16,499 INFO L226 Difference]: Without dead ends: 1580 [2024-10-11 05:14:16,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-11 05:14:16,501 INFO L432 NwaCegarLoop]: 2045 mSDtfsCounter, 1168 mSDsluCounter, 5093 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 7138 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:16,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 7138 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 05:14:16,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2024-10-11 05:14:16,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1182. [2024-10-11 05:14:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1175 states have (on average 1.4851063829787234) internal successors, (1745), 1175 states have internal predecessors, (1745), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 05:14:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1755 transitions. [2024-10-11 05:14:16,528 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1755 transitions. Word has length 364 [2024-10-11 05:14:16,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:16,529 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1755 transitions. [2024-10-11 05:14:16,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:14:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1755 transitions. [2024-10-11 05:14:16,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-10-11 05:14:16,531 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:16,532 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:16,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 05:14:16,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 05:14:16,733 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:16,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:16,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1843910969, now seen corresponding path program 1 times [2024-10-11 05:14:16,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:16,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340707517] [2024-10-11 05:14:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:16,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:17,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-11 05:14:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:17,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-10-11 05:14:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:17,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-10-11 05:14:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:17,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-10-11 05:14:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:17,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-10-11 05:14:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:17,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:17,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340707517] [2024-10-11 05:14:17,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340707517] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:17,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551981015] [2024-10-11 05:14:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:17,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:17,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:17,138 INFO L229 MonitoredProcess]: Starting monitored process 10 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 05:14:17,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 05:14:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:17,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 05:14:17,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:18,139 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-11 05:14:18,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 05:14:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-11 05:14:18,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551981015] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:18,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 05:14:18,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 7] total 12 [2024-10-11 05:14:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466873095] [2024-10-11 05:14:18,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:18,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 05:14:18,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:18,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 05:14:18,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-11 05:14:18,676 INFO L87 Difference]: Start difference. First operand 1182 states and 1755 transitions. Second operand has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:14:19,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:19,757 INFO L93 Difference]: Finished difference Result 1883 states and 2794 transitions. [2024-10-11 05:14:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 05:14:19,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 365 [2024-10-11 05:14:19,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:19,761 INFO L225 Difference]: With dead ends: 1883 [2024-10-11 05:14:19,762 INFO L226 Difference]: Without dead ends: 1185 [2024-10-11 05:14:19,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-10-11 05:14:19,763 INFO L432 NwaCegarLoop]: 989 mSDtfsCounter, 1359 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 2091 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:19,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 2961 Invalid, 2092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2091 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-11 05:14:19,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2024-10-11 05:14:19,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2024-10-11 05:14:19,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 1178 states have (on average 1.4847198641765704) internal successors, (1749), 1178 states have internal predecessors, (1749), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 05:14:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1759 transitions. [2024-10-11 05:14:19,785 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1759 transitions. Word has length 365 [2024-10-11 05:14:19,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:19,786 INFO L471 AbstractCegarLoop]: Abstraction has 1185 states and 1759 transitions. [2024-10-11 05:14:19,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:14:19,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1759 transitions. [2024-10-11 05:14:19,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-10-11 05:14:19,788 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:19,788 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:19,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 05:14:19,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:19,989 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:19,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:19,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1324878655, now seen corresponding path program 1 times [2024-10-11 05:14:19,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:19,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399429463] [2024-10-11 05:14:19,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:19,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:20,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-11 05:14:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:20,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-10-11 05:14:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:20,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-10-11 05:14:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:20,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-10-11 05:14:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:20,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-10-11 05:14:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:20,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399429463] [2024-10-11 05:14:20,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399429463] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:20,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198209540] [2024-10-11 05:14:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:20,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:20,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:20,337 INFO L229 MonitoredProcess]: Starting monitored process 11 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 05:14:20,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 05:14:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:21,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-11 05:14:21,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-11 05:14:21,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 05:14:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-11 05:14:21,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198209540] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:21,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 05:14:21,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 11 [2024-10-11 05:14:21,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701975634] [2024-10-11 05:14:21,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:21,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 05:14:21,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:21,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 05:14:21,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-11 05:14:21,235 INFO L87 Difference]: Start difference. First operand 1185 states and 1759 transitions. Second operand has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:14:21,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:21,338 INFO L93 Difference]: Finished difference Result 1896 states and 2812 transitions. [2024-10-11 05:14:21,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 05:14:21,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 366 [2024-10-11 05:14:21,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:21,343 INFO L225 Difference]: With dead ends: 1896 [2024-10-11 05:14:21,343 INFO L226 Difference]: Without dead ends: 1195 [2024-10-11 05:14:21,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 735 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-11 05:14:21,344 INFO L432 NwaCegarLoop]: 1657 mSDtfsCounter, 10 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6622 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:21,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 6622 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 05:14:21,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2024-10-11 05:14:21,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1195. [2024-10-11 05:14:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1188 states have (on average 1.484006734006734) internal successors, (1763), 1188 states have internal predecessors, (1763), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 05:14:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1773 transitions. [2024-10-11 05:14:21,364 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1773 transitions. Word has length 366 [2024-10-11 05:14:21,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:21,365 INFO L471 AbstractCegarLoop]: Abstraction has 1195 states and 1773 transitions. [2024-10-11 05:14:21,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:14:21,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1773 transitions. [2024-10-11 05:14:21,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-10-11 05:14:21,368 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:21,368 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:21,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 05:14:21,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 05:14:21,569 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:21,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:21,570 INFO L85 PathProgramCache]: Analyzing trace with hash -140419502, now seen corresponding path program 1 times [2024-10-11 05:14:21,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:21,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151810159] [2024-10-11 05:14:21,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:21,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:21,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-11 05:14:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:21,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-10-11 05:14:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:21,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-10-11 05:14:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:21,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-10-11 05:14:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:21,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-10-11 05:14:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:21,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:21,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151810159] [2024-10-11 05:14:21,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151810159] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:21,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946207021] [2024-10-11 05:14:21,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:21,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:21,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:21,979 INFO L229 MonitoredProcess]: Starting monitored process 12 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 05:14:21,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 05:14:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:22,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 05:14:22,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-11 05:14:22,773 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 05:14:22,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946207021] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:14:22,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 05:14:22,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-10-11 05:14:22,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563849560] [2024-10-11 05:14:22,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:22,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 05:14:22,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:22,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 05:14:22,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 05:14:22,775 INFO L87 Difference]: Start difference. First operand 1195 states and 1773 transitions. Second operand has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 05:14:23,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:23,519 INFO L93 Difference]: Finished difference Result 2587 states and 3833 transitions. [2024-10-11 05:14:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 05:14:23,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 367 [2024-10-11 05:14:23,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:23,526 INFO L225 Difference]: With dead ends: 2587 [2024-10-11 05:14:23,527 INFO L226 Difference]: Without dead ends: 1876 [2024-10-11 05:14:23,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-11 05:14:23,529 INFO L432 NwaCegarLoop]: 1475 mSDtfsCounter, 1860 mSDsluCounter, 4094 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 5569 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:23,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 5569 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 05:14:23,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2024-10-11 05:14:23,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1259. [2024-10-11 05:14:23,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1250 states have (on average 1.4792) internal successors, (1849), 1250 states have internal predecessors, (1849), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-11 05:14:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1863 transitions. [2024-10-11 05:14:23,555 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1863 transitions. Word has length 367 [2024-10-11 05:14:23,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:23,556 INFO L471 AbstractCegarLoop]: Abstraction has 1259 states and 1863 transitions. [2024-10-11 05:14:23,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 05:14:23,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1863 transitions. [2024-10-11 05:14:23,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2024-10-11 05:14:23,559 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:23,559 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:23,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 05:14:23,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 05:14:23,760 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:23,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:23,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1308774801, now seen corresponding path program 1 times [2024-10-11 05:14:23,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:23,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196532297] [2024-10-11 05:14:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:23,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:24,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-11 05:14:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:24,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-10-11 05:14:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:24,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-10-11 05:14:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:24,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-10-11 05:14:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:24,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-10-11 05:14:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:24,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:24,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196532297] [2024-10-11 05:14:24,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196532297] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:24,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050141858] [2024-10-11 05:14:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:24,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:24,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:24,119 INFO L229 MonitoredProcess]: Starting monitored process 13 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 05:14:24,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 05:14:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:24,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 05:14:24,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-11 05:14:25,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 05:14:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-11 05:14:25,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050141858] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:25,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 05:14:25,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 7] total 14 [2024-10-11 05:14:25,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818314461] [2024-10-11 05:14:25,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:25,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 05:14:25,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:25,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 05:14:25,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-10-11 05:14:25,641 INFO L87 Difference]: Start difference. First operand 1259 states and 1863 transitions. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:14:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:27,147 INFO L93 Difference]: Finished difference Result 2511 states and 3709 transitions. [2024-10-11 05:14:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 05:14:27,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 368 [2024-10-11 05:14:27,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:27,152 INFO L225 Difference]: With dead ends: 2511 [2024-10-11 05:14:27,152 INFO L226 Difference]: Without dead ends: 1736 [2024-10-11 05:14:27,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-10-11 05:14:27,153 INFO L432 NwaCegarLoop]: 979 mSDtfsCounter, 2609 mSDsluCounter, 2927 mSDsCounter, 0 mSdLazyCounter, 2830 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 3906 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:27,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2614 Valid, 3906 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2830 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-11 05:14:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2024-10-11 05:14:27,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1289. [2024-10-11 05:14:27,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1280 states have (on average 1.47578125) internal successors, (1889), 1280 states have internal predecessors, (1889), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-11 05:14:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1903 transitions. [2024-10-11 05:14:27,180 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1903 transitions. Word has length 368 [2024-10-11 05:14:27,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:27,180 INFO L471 AbstractCegarLoop]: Abstraction has 1289 states and 1903 transitions. [2024-10-11 05:14:27,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 05:14:27,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1903 transitions. [2024-10-11 05:14:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2024-10-11 05:14:27,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:27,184 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:27,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-11 05:14:27,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 05:14:27,385 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:27,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:27,385 INFO L85 PathProgramCache]: Analyzing trace with hash 839336462, now seen corresponding path program 1 times [2024-10-11 05:14:27,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:27,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603992274] [2024-10-11 05:14:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:27,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:27,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-11 05:14:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:27,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-10-11 05:14:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:27,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-10-11 05:14:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:27,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-10-11 05:14:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:27,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-10-11 05:14:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:27,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:27,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603992274] [2024-10-11 05:14:27,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603992274] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:27,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608848547] [2024-10-11 05:14:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:27,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:27,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:27,726 INFO L229 MonitoredProcess]: Starting monitored process 14 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 05:14:27,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 05:14:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:28,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-11 05:14:28,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:29,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 05:14:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-11 05:14:29,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608848547] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:29,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 05:14:29,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 6] total 18 [2024-10-11 05:14:29,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745185017] [2024-10-11 05:14:29,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:29,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 05:14:29,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:29,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 05:14:29,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-10-11 05:14:29,625 INFO L87 Difference]: Start difference. First operand 1289 states and 1903 transitions. Second operand has 11 states, 11 states have (on average 29.818181818181817) internal successors, (328), 11 states have internal predecessors, (328), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 05:14:29,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:29,946 INFO L93 Difference]: Finished difference Result 2106 states and 3103 transitions. [2024-10-11 05:14:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 05:14:29,947 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 29.818181818181817) internal successors, (328), 11 states have internal predecessors, (328), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 368 [2024-10-11 05:14:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:29,952 INFO L225 Difference]: With dead ends: 2106 [2024-10-11 05:14:29,952 INFO L226 Difference]: Without dead ends: 1301 [2024-10-11 05:14:29,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2024-10-11 05:14:29,956 INFO L432 NwaCegarLoop]: 1636 mSDtfsCounter, 1676 mSDsluCounter, 6545 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 8181 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:29,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1680 Valid, 8181 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 05:14:29,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2024-10-11 05:14:29,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1299. [2024-10-11 05:14:29,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 1290 states have (on average 1.4736434108527132) internal successors, (1901), 1290 states have internal predecessors, (1901), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-11 05:14:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1915 transitions. [2024-10-11 05:14:29,996 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1915 transitions. Word has length 368 [2024-10-11 05:14:29,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:29,996 INFO L471 AbstractCegarLoop]: Abstraction has 1299 states and 1915 transitions. [2024-10-11 05:14:29,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 29.818181818181817) internal successors, (328), 11 states have internal predecessors, (328), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 05:14:29,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1915 transitions. [2024-10-11 05:14:30,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-10-11 05:14:30,001 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:30,001 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:30,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-11 05:14:30,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:30,203 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:30,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:30,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1952173879, now seen corresponding path program 1 times [2024-10-11 05:14:30,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:30,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520472362] [2024-10-11 05:14:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:30,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:30,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-11 05:14:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:30,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-10-11 05:14:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:30,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-10-11 05:14:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:30,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-10-11 05:14:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:30,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-10-11 05:14:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:30,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:30,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520472362] [2024-10-11 05:14:30,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520472362] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:30,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484901389] [2024-10-11 05:14:30,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:30,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:30,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:30,625 INFO L229 MonitoredProcess]: Starting monitored process 15 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 05:14:30,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 05:14:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:31,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 05:14:31,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-11 05:14:31,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 05:14:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-11 05:14:32,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484901389] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:32,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 05:14:32,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 6] total 10 [2024-10-11 05:14:32,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661619262] [2024-10-11 05:14:32,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:32,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 05:14:32,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:32,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 05:14:32,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-11 05:14:32,079 INFO L87 Difference]: Start difference. First operand 1299 states and 1915 transitions. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 05:14:32,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:32,182 INFO L93 Difference]: Finished difference Result 2114 states and 3109 transitions. [2024-10-11 05:14:32,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 05:14:32,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 369 [2024-10-11 05:14:32,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:32,186 INFO L225 Difference]: With dead ends: 2114 [2024-10-11 05:14:32,186 INFO L226 Difference]: Without dead ends: 1299 [2024-10-11 05:14:32,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 05:14:32,188 INFO L432 NwaCegarLoop]: 1640 mSDtfsCounter, 1405 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 3287 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:32,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1409 Valid, 3287 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 05:14:32,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2024-10-11 05:14:32,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1299. [2024-10-11 05:14:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 1290 states have (on average 1.472093023255814) internal successors, (1899), 1290 states have internal predecessors, (1899), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-11 05:14:32,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1913 transitions. [2024-10-11 05:14:32,213 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1913 transitions. Word has length 369 [2024-10-11 05:14:32,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:32,214 INFO L471 AbstractCegarLoop]: Abstraction has 1299 states and 1913 transitions. [2024-10-11 05:14:32,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 05:14:32,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1913 transitions. [2024-10-11 05:14:32,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-10-11 05:14:32,216 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:32,217 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:32,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-11 05:14:32,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 05:14:32,418 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:32,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:32,418 INFO L85 PathProgramCache]: Analyzing trace with hash 301913623, now seen corresponding path program 1 times [2024-10-11 05:14:32,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:32,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389807429] [2024-10-11 05:14:32,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:32,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:32,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-11 05:14:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:32,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-10-11 05:14:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:32,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-10-11 05:14:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:32,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-10-11 05:14:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:32,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-10-11 05:14:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:32,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:32,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389807429] [2024-10-11 05:14:32,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389807429] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:32,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907597404] [2024-10-11 05:14:32,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:32,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:32,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:32,846 INFO L229 MonitoredProcess]: Starting monitored process 16 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 05:14:32,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 05:14:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:33,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 05:14:33,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-11 05:14:33,880 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 05:14:33,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907597404] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:14:33,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 05:14:33,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2024-10-11 05:14:33,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417623596] [2024-10-11 05:14:33,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:33,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 05:14:33,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:33,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 05:14:33,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-11 05:14:33,882 INFO L87 Difference]: Start difference. First operand 1299 states and 1913 transitions. Second operand has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 05:14:35,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:35,458 INFO L93 Difference]: Finished difference Result 3697 states and 5423 transitions. [2024-10-11 05:14:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 05:14:35,458 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 369 [2024-10-11 05:14:35,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:35,468 INFO L225 Difference]: With dead ends: 3697 [2024-10-11 05:14:35,468 INFO L226 Difference]: Without dead ends: 2882 [2024-10-11 05:14:35,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-10-11 05:14:35,471 INFO L432 NwaCegarLoop]: 2133 mSDtfsCounter, 2997 mSDsluCounter, 9703 mSDsCounter, 0 mSdLazyCounter, 2569 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3007 SdHoareTripleChecker+Valid, 11836 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:35,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3007 Valid, 11836 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2569 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-11 05:14:35,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2024-10-11 05:14:35,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1407. [2024-10-11 05:14:35,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1396 states have (on average 1.4663323782234956) internal successors, (2047), 1396 states have internal predecessors, (2047), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-11 05:14:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 2065 transitions. [2024-10-11 05:14:35,498 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 2065 transitions. Word has length 369 [2024-10-11 05:14:35,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:35,498 INFO L471 AbstractCegarLoop]: Abstraction has 1407 states and 2065 transitions. [2024-10-11 05:14:35,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 05:14:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 2065 transitions. [2024-10-11 05:14:35,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2024-10-11 05:14:35,501 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:35,502 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:35,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-11 05:14:35,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 05:14:35,703 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:35,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:35,703 INFO L85 PathProgramCache]: Analyzing trace with hash -134210196, now seen corresponding path program 1 times [2024-10-11 05:14:35,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:35,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796095185] [2024-10-11 05:14:35,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:35,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:36,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-10-11 05:14:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:36,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-10-11 05:14:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:36,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-10-11 05:14:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:36,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-10-11 05:14:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:36,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-10-11 05:14:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:36,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:36,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796095185] [2024-10-11 05:14:36,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796095185] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:36,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044811379] [2024-10-11 05:14:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:36,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:36,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:36,032 INFO L229 MonitoredProcess]: Starting monitored process 17 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 05:14:36,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 05:14:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:36,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 132 conjuncts are in the unsatisfiable core [2024-10-11 05:14:36,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-11 05:14:38,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 05:14:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-11 05:14:39,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044811379] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:39,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 05:14:39,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [4, 22] total 41 [2024-10-11 05:14:39,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178695651] [2024-10-11 05:14:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:39,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 05:14:39,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:39,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 05:14:39,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1225, Unknown=0, NotChecked=0, Total=1640 [2024-10-11 05:14:39,971 INFO L87 Difference]: Start difference. First operand 1407 states and 2065 transitions. Second operand has 19 states, 19 states have (on average 17.36842105263158) internal successors, (330), 19 states have internal predecessors, (330), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 05:14:44,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:44,656 INFO L93 Difference]: Finished difference Result 3594 states and 5265 transitions. [2024-10-11 05:14:44,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 05:14:44,657 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 17.36842105263158) internal successors, (330), 19 states have internal predecessors, (330), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 370 [2024-10-11 05:14:44,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:44,665 INFO L225 Difference]: With dead ends: 3594 [2024-10-11 05:14:44,666 INFO L226 Difference]: Without dead ends: 2671 [2024-10-11 05:14:44,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=760, Invalid=1892, Unknown=0, NotChecked=0, Total=2652 [2024-10-11 05:14:44,668 INFO L432 NwaCegarLoop]: 1318 mSDtfsCounter, 15965 mSDsluCounter, 11210 mSDsCounter, 0 mSdLazyCounter, 5257 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15967 SdHoareTripleChecker+Valid, 12528 SdHoareTripleChecker+Invalid, 5802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 5257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:44,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15967 Valid, 12528 Invalid, 5802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 5257 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-10-11 05:14:44,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2024-10-11 05:14:44,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 1413. [2024-10-11 05:14:44,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1402 states have (on average 1.4657631954350927) internal successors, (2055), 1402 states have internal predecessors, (2055), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-11 05:14:44,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 2073 transitions. [2024-10-11 05:14:44,706 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 2073 transitions. Word has length 370 [2024-10-11 05:14:44,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:44,706 INFO L471 AbstractCegarLoop]: Abstraction has 1413 states and 2073 transitions. [2024-10-11 05:14:44,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.36842105263158) internal successors, (330), 19 states have internal predecessors, (330), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 05:14:44,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 2073 transitions. [2024-10-11 05:14:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2024-10-11 05:14:44,709 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:44,710 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:44,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-11 05:14:44,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 05:14:44,915 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:44,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:44,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1153830452, now seen corresponding path program 1 times [2024-10-11 05:14:44,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:44,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000944752] [2024-10-11 05:14:44,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:44,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:45,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-10-11 05:14:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:45,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-10-11 05:14:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:45,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-10-11 05:14:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:45,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-10-11 05:14:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:45,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-10-11 05:14:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:45,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:45,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000944752] [2024-10-11 05:14:45,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000944752] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:45,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560432760] [2024-10-11 05:14:45,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:45,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:45,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:45,369 INFO L229 MonitoredProcess]: Starting monitored process 18 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 05:14:45,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 05:14:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:46,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 05:14:46,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-11 05:14:46,565 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 05:14:46,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560432760] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:14:46,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 05:14:46,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-10-11 05:14:46,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219273428] [2024-10-11 05:14:46,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:46,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 05:14:46,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:46,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 05:14:46,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 05:14:46,568 INFO L87 Difference]: Start difference. First operand 1413 states and 2073 transitions. Second operand has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 05:14:46,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:46,711 INFO L93 Difference]: Finished difference Result 2697 states and 3925 transitions. [2024-10-11 05:14:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 05:14:46,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 371 [2024-10-11 05:14:46,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:46,716 INFO L225 Difference]: With dead ends: 2697 [2024-10-11 05:14:46,716 INFO L226 Difference]: Without dead ends: 1768 [2024-10-11 05:14:46,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 05:14:46,718 INFO L432 NwaCegarLoop]: 1640 mSDtfsCounter, 1546 mSDsluCounter, 3278 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 4918 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:46,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 4918 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 05:14:46,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2024-10-11 05:14:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1748. [2024-10-11 05:14:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1730 states have (on average 1.4520231213872832) internal successors, (2512), 1730 states have internal predecessors, (2512), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-11 05:14:46,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2544 transitions. [2024-10-11 05:14:46,755 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2544 transitions. Word has length 371 [2024-10-11 05:14:46,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:46,755 INFO L471 AbstractCegarLoop]: Abstraction has 1748 states and 2544 transitions. [2024-10-11 05:14:46,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 05:14:46,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2544 transitions. [2024-10-11 05:14:46,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2024-10-11 05:14:46,758 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:46,758 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:46,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-11 05:14:46,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:46,959 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:46,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:46,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1106153523, now seen corresponding path program 1 times [2024-10-11 05:14:46,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:46,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053825972] [2024-10-11 05:14:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:46,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:47,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-10-11 05:14:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:47,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-10-11 05:14:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:47,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-10-11 05:14:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:47,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-10-11 05:14:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:47,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-10-11 05:14:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:47,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:47,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053825972] [2024-10-11 05:14:47,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053825972] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:47,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335813686] [2024-10-11 05:14:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:47,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:47,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:47,269 INFO L229 MonitoredProcess]: Starting monitored process 19 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 05:14:47,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 05:14:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:48,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-11 05:14:48,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-11 05:14:48,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 05:14:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-11 05:14:49,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335813686] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:49,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 05:14:49,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 8] total 18 [2024-10-11 05:14:49,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255204573] [2024-10-11 05:14:49,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:49,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 05:14:49,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:49,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 05:14:49,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-10-11 05:14:49,176 INFO L87 Difference]: Start difference. First operand 1748 states and 2544 transitions. Second operand has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-11 05:14:50,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:50,648 INFO L93 Difference]: Finished difference Result 2679 states and 3899 transitions. [2024-10-11 05:14:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 05:14:50,649 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 371 [2024-10-11 05:14:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:50,658 INFO L225 Difference]: With dead ends: 2679 [2024-10-11 05:14:50,658 INFO L226 Difference]: Without dead ends: 1750 [2024-10-11 05:14:50,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-10-11 05:14:50,661 INFO L432 NwaCegarLoop]: 965 mSDtfsCounter, 8270 mSDsluCounter, 2894 mSDsCounter, 0 mSdLazyCounter, 2871 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8274 SdHoareTripleChecker+Valid, 3859 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:50,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8274 Valid, 3859 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2871 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-11 05:14:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2024-10-11 05:14:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1750. [2024-10-11 05:14:50,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1750 states, 1732 states have (on average 1.4509237875288683) internal successors, (2513), 1732 states have internal predecessors, (2513), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-11 05:14:50,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2545 transitions. [2024-10-11 05:14:50,705 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2545 transitions. Word has length 371 [2024-10-11 05:14:50,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:50,706 INFO L471 AbstractCegarLoop]: Abstraction has 1750 states and 2545 transitions. [2024-10-11 05:14:50,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-11 05:14:50,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2545 transitions. [2024-10-11 05:14:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-10-11 05:14:50,708 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:50,708 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:50,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-11 05:14:50,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:50,909 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:50,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:50,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1856282558, now seen corresponding path program 1 times [2024-10-11 05:14:50,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:50,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677945532] [2024-10-11 05:14:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:50,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:51,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-10-11 05:14:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:51,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-10-11 05:14:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:51,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-10-11 05:14:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:51,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-10-11 05:14:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:51,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-10-11 05:14:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:51,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:51,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677945532] [2024-10-11 05:14:51,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677945532] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634760013] [2024-10-11 05:14:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:51,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:51,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:51,232 INFO L229 MonitoredProcess]: Starting monitored process 20 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 05:14:51,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-11 05:14:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:52,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-11 05:14:52,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-11 05:14:52,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 05:14:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-11 05:14:52,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634760013] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:52,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 05:14:52,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 8] total 19 [2024-10-11 05:14:52,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749627722] [2024-10-11 05:14:52,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:52,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 05:14:52,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:52,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 05:14:52,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-10-11 05:14:52,917 INFO L87 Difference]: Start difference. First operand 1750 states and 2545 transitions. Second operand has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 05:14:54,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:54,402 INFO L93 Difference]: Finished difference Result 2684 states and 3903 transitions. [2024-10-11 05:14:54,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 05:14:54,403 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 372 [2024-10-11 05:14:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:54,406 INFO L225 Difference]: With dead ends: 2684 [2024-10-11 05:14:54,406 INFO L226 Difference]: Without dead ends: 1753 [2024-10-11 05:14:54,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 739 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2024-10-11 05:14:54,408 INFO L432 NwaCegarLoop]: 964 mSDtfsCounter, 6568 mSDsluCounter, 2907 mSDsCounter, 0 mSdLazyCounter, 2876 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6570 SdHoareTripleChecker+Valid, 3871 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:54,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6570 Valid, 3871 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2876 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-11 05:14:54,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2024-10-11 05:14:54,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1753. [2024-10-11 05:14:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1735 states have (on average 1.4507204610951008) internal successors, (2517), 1735 states have internal predecessors, (2517), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-11 05:14:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2549 transitions. [2024-10-11 05:14:54,443 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2549 transitions. Word has length 372 [2024-10-11 05:14:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:54,443 INFO L471 AbstractCegarLoop]: Abstraction has 1753 states and 2549 transitions. [2024-10-11 05:14:54,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 05:14:54,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2549 transitions. [2024-10-11 05:14:54,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-10-11 05:14:54,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:54,446 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:54,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-11 05:14:54,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:54,647 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:54,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:54,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1823391120, now seen corresponding path program 1 times [2024-10-11 05:14:54,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:54,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357014794] [2024-10-11 05:14:54,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:54,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:54,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-10-11 05:14:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:54,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-10-11 05:14:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:54,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-10-11 05:14:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:54,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-10-11 05:14:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:54,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-10-11 05:14:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:54,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:54,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357014794] [2024-10-11 05:14:54,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357014794] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:54,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356851116] [2024-10-11 05:14:54,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:54,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:54,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:54,930 INFO L229 MonitoredProcess]: Starting monitored process 21 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 05:14:54,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-11 05:14:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:55,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-11 05:14:55,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:14:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-11 05:14:56,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 05:14:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-11 05:14:56,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356851116] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:56,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 05:14:56,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 9] total 19 [2024-10-11 05:14:56,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97639328] [2024-10-11 05:14:56,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:14:56,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 05:14:56,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:14:56,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 05:14:56,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-10-11 05:14:56,801 INFO L87 Difference]: Start difference. First operand 1753 states and 2549 transitions. Second operand has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-11 05:14:58,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:14:58,281 INFO L93 Difference]: Finished difference Result 2688 states and 3908 transitions. [2024-10-11 05:14:58,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 05:14:58,282 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 372 [2024-10-11 05:14:58,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:14:58,286 INFO L225 Difference]: With dead ends: 2688 [2024-10-11 05:14:58,286 INFO L226 Difference]: Without dead ends: 1754 [2024-10-11 05:14:58,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 739 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2024-10-11 05:14:58,288 INFO L432 NwaCegarLoop]: 965 mSDtfsCounter, 6668 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6672 SdHoareTripleChecker+Valid, 3867 SdHoareTripleChecker+Invalid, 2889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-11 05:14:58,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6672 Valid, 3867 Invalid, 2889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-11 05:14:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2024-10-11 05:14:58,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1754. [2024-10-11 05:14:58,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1736 states have (on average 1.4504608294930876) internal successors, (2518), 1736 states have internal predecessors, (2518), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-11 05:14:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2550 transitions. [2024-10-11 05:14:58,326 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2550 transitions. Word has length 372 [2024-10-11 05:14:58,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:14:58,326 INFO L471 AbstractCegarLoop]: Abstraction has 1754 states and 2550 transitions. [2024-10-11 05:14:58,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-11 05:14:58,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2550 transitions. [2024-10-11 05:14:58,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-10-11 05:14:58,355 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:14:58,356 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:58,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-11 05:14:58,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:58,557 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:14:58,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:14:58,558 INFO L85 PathProgramCache]: Analyzing trace with hash -107456248, now seen corresponding path program 1 times [2024-10-11 05:14:58,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:14:58,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860458541] [2024-10-11 05:14:58,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:58,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:14:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:58,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-10-11 05:14:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:58,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-10-11 05:14:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:58,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-10-11 05:14:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:58,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-10-11 05:14:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:58,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-10-11 05:14:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 05:14:58,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:14:58,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860458541] [2024-10-11 05:14:58,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860458541] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 05:14:58,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725637721] [2024-10-11 05:14:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:14:58,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 05:14:58,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:14:58,871 INFO L229 MonitoredProcess]: Starting monitored process 22 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 05:14:58,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-11 05:14:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:14:59,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-11 05:14:59,747 INFO L278 TraceCheckSpWp]: Computing forward predicates...