./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_monotonic.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_monotonic.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32c4229282aa8583dd78af7db3951b4b02cf6352dc78922adb29bd4d79cf61bb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 21:55:51,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 21:55:51,350 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 21:55:51,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 21:55:51,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 21:55:51,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 21:55:51,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 21:55:51,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 21:55:51,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 21:55:51,374 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 21:55:51,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 21:55:51,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 21:55:51,375 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 21:55:51,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 21:55:51,376 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 21:55:51,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 21:55:51,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 21:55:51,377 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 21:55:51,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 21:55:51,377 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 21:55:51,377 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 21:55:51,380 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 21:55:51,380 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 21:55:51,381 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 21:55:51,381 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 21:55:51,381 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 21:55:51,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 21:55:51,381 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 21:55:51,382 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 21:55:51,382 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 21:55:51,382 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 21:55:51,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 21:55:51,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:55:51,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 21:55:51,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 21:55:51,383 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 21:55:51,383 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 21:55:51,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 21:55:51,384 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 21:55:51,384 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 21:55:51,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 21:55:51,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 21:55:51,386 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32c4229282aa8583dd78af7db3951b4b02cf6352dc78922adb29bd4d79cf61bb [2024-10-10 21:55:51,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 21:55:51,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 21:55:51,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 21:55:51,602 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 21:55:51,603 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 21:55:51,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_monotonic.i [2024-10-10 21:55:52,826 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 21:55:52,966 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 21:55:52,966 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_monotonic.i [2024-10-10 21:55:52,975 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/41007e707/d6c86770ce6747478e2d607e3858d837/FLAG3e20aed52 [2024-10-10 21:55:52,985 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/41007e707/d6c86770ce6747478e2d607e3858d837 [2024-10-10 21:55:52,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 21:55:52,988 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 21:55:52,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 21:55:52,991 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 21:55:52,995 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 21:55:52,996 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:55:52" (1/1) ... [2024-10-10 21:55:52,997 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a05db6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:52, skipping insertion in model container [2024-10-10 21:55:52,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:55:52" (1/1) ... [2024-10-10 21:55:53,013 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 21:55:53,176 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/array-industry-pattern/array_of_struct_ptr_monotonic.i[999,1012] [2024-10-10 21:55:53,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:55:53,205 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 21:55:53,228 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/array-industry-pattern/array_of_struct_ptr_monotonic.i[999,1012] [2024-10-10 21:55:53,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:55:53,255 INFO L204 MainTranslator]: Completed translation [2024-10-10 21:55:53,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:53 WrapperNode [2024-10-10 21:55:53,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 21:55:53,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 21:55:53,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 21:55:53,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 21:55:53,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:53" (1/1) ... [2024-10-10 21:55:53,268 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:53" (1/1) ... [2024-10-10 21:55:53,280 INFO L138 Inliner]: procedures = 19, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-10-10 21:55:53,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 21:55:53,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 21:55:53,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 21:55:53,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 21:55:53,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:53" (1/1) ... [2024-10-10 21:55:53,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:53" (1/1) ... [2024-10-10 21:55:53,290 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:53" (1/1) ... [2024-10-10 21:55:53,304 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 3, 5]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-10-10 21:55:53,304 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:53" (1/1) ... [2024-10-10 21:55:53,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:53" (1/1) ... [2024-10-10 21:55:53,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:53" (1/1) ... [2024-10-10 21:55:53,313 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:53" (1/1) ... [2024-10-10 21:55:53,315 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:53" (1/1) ... [2024-10-10 21:55:53,315 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:53" (1/1) ... [2024-10-10 21:55:53,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 21:55:53,318 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 21:55:53,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 21:55:53,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 21:55:53,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:53" (1/1) ... [2024-10-10 21:55:53,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:55:53,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:55:53,351 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) [2024-10-10 21:55:53,353 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 [2024-10-10 21:55:53,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-10 21:55:53,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-10 21:55:53,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-10 21:55:53,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 21:55:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 21:55:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 21:55:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-10 21:55:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-10 21:55:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-10 21:55:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-10 21:55:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 21:55:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 21:55:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-10 21:55:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-10 21:55:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 21:55:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 21:55:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 21:55:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 21:55:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-10 21:55:53,476 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 21:55:53,478 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 21:55:53,587 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-10-10 21:55:53,587 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 21:55:53,604 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 21:55:53,604 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-10 21:55:53,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:55:53 BoogieIcfgContainer [2024-10-10 21:55:53,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 21:55:53,606 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 21:55:53,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 21:55:53,609 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 21:55:53,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 09:55:52" (1/3) ... [2024-10-10 21:55:53,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23307db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:55:53, skipping insertion in model container [2024-10-10 21:55:53,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:55:53" (2/3) ... [2024-10-10 21:55:53,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23307db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:55:53, skipping insertion in model container [2024-10-10 21:55:53,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:55:53" (3/3) ... [2024-10-10 21:55:53,611 INFO L112 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_monotonic.i [2024-10-10 21:55:53,624 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 21:55:53,625 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 21:55:53,665 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 21:55:53,670 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;@dd18271, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 21:55:53,670 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 21:55:53,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:55:53,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-10 21:55:53,678 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:55:53,679 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:55:53,679 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:55:53,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:55:53,683 INFO L85 PathProgramCache]: Analyzing trace with hash 526819454, now seen corresponding path program 1 times [2024-10-10 21:55:53,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:55:53,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247335018] [2024-10-10 21:55:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:55:53,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:55:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:55:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:55:53,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:55:53,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247335018] [2024-10-10 21:55:53,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247335018] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:55:53,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:55:53,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 21:55:53,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396207578] [2024-10-10 21:55:53,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:55:53,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 21:55:53,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:55:53,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 21:55:53,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 21:55:53,823 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:55:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:55:53,843 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2024-10-10 21:55:53,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 21:55:53,845 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-10 21:55:53,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:55:53,851 INFO L225 Difference]: With dead ends: 24 [2024-10-10 21:55:53,851 INFO L226 Difference]: Without dead ends: 12 [2024-10-10 21:55:53,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 21:55:53,858 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:55:53,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:55:53,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-10-10 21:55:53,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-10 21:55:53,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:55:53,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2024-10-10 21:55:53,890 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2024-10-10 21:55:53,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:55:53,890 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2024-10-10 21:55:53,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:55:53,890 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2024-10-10 21:55:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-10 21:55:53,891 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:55:53,891 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:55:53,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 21:55:53,891 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:55:53,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:55:53,892 INFO L85 PathProgramCache]: Analyzing trace with hash 154640491, now seen corresponding path program 1 times [2024-10-10 21:55:53,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:55:53,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185564619] [2024-10-10 21:55:53,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:55:53,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:55:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:55:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:55:53,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:55:53,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185564619] [2024-10-10 21:55:53,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185564619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:55:53,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:55:53,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 21:55:53,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797458340] [2024-10-10 21:55:53,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:55:53,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:55:53,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:55:53,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:55:53,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:55:53,990 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:55:54,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:55:54,009 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2024-10-10 21:55:54,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:55:54,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-10 21:55:54,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:55:54,010 INFO L225 Difference]: With dead ends: 30 [2024-10-10 21:55:54,010 INFO L226 Difference]: Without dead ends: 22 [2024-10-10 21:55:54,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:55:54,011 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:55:54,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:55:54,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-10 21:55:54,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 13. [2024-10-10 21:55:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:55:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2024-10-10 21:55:54,014 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2024-10-10 21:55:54,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:55:54,015 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-10-10 21:55:54,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:55:54,015 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2024-10-10 21:55:54,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-10 21:55:54,015 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:55:54,016 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:55:54,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 21:55:54,016 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:55:54,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:55:54,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1444557877, now seen corresponding path program 1 times [2024-10-10 21:55:54,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:55:54,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561860501] [2024-10-10 21:55:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:55:54,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:55:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:55:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:55:54,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:55:54,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561860501] [2024-10-10 21:55:54,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561860501] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:55:54,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550528997] [2024-10-10 21:55:54,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:55:54,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:55:54,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:55:54,130 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) [2024-10-10 21:55:54,131 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 [2024-10-10 21:55:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:55:54,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 21:55:54,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:55:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:55:54,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:55:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:55:54,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550528997] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:55:54,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:55:54,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-10 21:55:54,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187232154] [2024-10-10 21:55:54,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:55:54,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 21:55:54,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:55:54,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 21:55:54,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:55:54,265 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:55:54,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:55:54,307 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2024-10-10 21:55:54,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-10 21:55:54,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-10 21:55:54,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:55:54,308 INFO L225 Difference]: With dead ends: 52 [2024-10-10 21:55:54,308 INFO L226 Difference]: Without dead ends: 44 [2024-10-10 21:55:54,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:55:54,309 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 60 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:55:54,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 34 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:55:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-10 21:55:54,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 22. [2024-10-10 21:55:54,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:55:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2024-10-10 21:55:54,318 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 10 [2024-10-10 21:55:54,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:55:54,318 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2024-10-10 21:55:54,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:55:54,318 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2024-10-10 21:55:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-10 21:55:54,319 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:55:54,319 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:55:54,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 21:55:54,519 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 [2024-10-10 21:55:54,520 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:55:54,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:55:54,520 INFO L85 PathProgramCache]: Analyzing trace with hash 360691691, now seen corresponding path program 2 times [2024-10-10 21:55:54,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:55:54,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792971735] [2024-10-10 21:55:54,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:55:54,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:55:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:55:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:55:54,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:55:54,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792971735] [2024-10-10 21:55:54,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792971735] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:55:54,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558399060] [2024-10-10 21:55:54,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:55:54,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:55:54,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:55:54,748 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) [2024-10-10 21:55:54,749 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 [2024-10-10 21:55:54,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:55:54,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:55:54,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 21:55:54,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:55:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:55:54,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:55:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:55:54,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558399060] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:55:54,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:55:54,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-10 21:55:54,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203610025] [2024-10-10 21:55:54,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:55:54,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-10 21:55:54,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:55:54,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-10 21:55:54,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-10 21:55:54,966 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:55:55,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:55:55,056 INFO L93 Difference]: Finished difference Result 112 states and 140 transitions. [2024-10-10 21:55:55,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-10 21:55:55,057 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-10 21:55:55,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:55:55,058 INFO L225 Difference]: With dead ends: 112 [2024-10-10 21:55:55,058 INFO L226 Difference]: Without dead ends: 104 [2024-10-10 21:55:55,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-10 21:55:55,060 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 148 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:55:55,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 82 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:55:55,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-10 21:55:55,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 40. [2024-10-10 21:55:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:55:55,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2024-10-10 21:55:55,069 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 19 [2024-10-10 21:55:55,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:55:55,070 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2024-10-10 21:55:55,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:55:55,070 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2024-10-10 21:55:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-10 21:55:55,071 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:55:55,071 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:55:55,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 21:55:55,271 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 [2024-10-10 21:55:55,272 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:55:55,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:55:55,272 INFO L85 PathProgramCache]: Analyzing trace with hash 270549803, now seen corresponding path program 3 times [2024-10-10 21:55:55,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:55:55,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675463333] [2024-10-10 21:55:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:55:55,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:55:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:55:55,692 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:55:55,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:55:55,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675463333] [2024-10-10 21:55:55,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675463333] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:55:55,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629597048] [2024-10-10 21:55:55,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:55:55,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:55:55,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:55:55,695 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) [2024-10-10 21:55:55,696 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 [2024-10-10 21:56:55,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-10 21:56:55,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:56:55,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-10 21:56:55,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:56:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:56:55,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:56:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:56:55,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629597048] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:56:55,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:56:55,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-10-10 21:56:55,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632668699] [2024-10-10 21:56:55,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:56:55,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-10 21:56:55,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:56:55,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-10 21:56:55,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-10 21:56:55,470 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:56:55,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:56:55,653 INFO L93 Difference]: Finished difference Result 232 states and 290 transitions. [2024-10-10 21:56:55,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-10 21:56:55,653 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-10 21:56:55,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:56:55,655 INFO L225 Difference]: With dead ends: 232 [2024-10-10 21:56:55,655 INFO L226 Difference]: Without dead ends: 224 [2024-10-10 21:56:55,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-10 21:56:55,656 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 380 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:56:55,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 178 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:56:55,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-10-10 21:56:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 76. [2024-10-10 21:56:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3333333333333333) internal successors, (100), 75 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:56:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2024-10-10 21:56:55,669 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 37 [2024-10-10 21:56:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:56:55,669 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2024-10-10 21:56:55,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:56:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2024-10-10 21:56:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-10 21:56:55,671 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:56:55,671 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:56:55,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 21:56:55,871 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 [2024-10-10 21:56:55,872 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:56:55,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:56:55,873 INFO L85 PathProgramCache]: Analyzing trace with hash -992450133, now seen corresponding path program 4 times [2024-10-10 21:56:55,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:56:55,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676550303] [2024-10-10 21:56:55,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:56:55,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:56:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:56:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:56:56,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:56:56,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676550303] [2024-10-10 21:56:56,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676550303] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:56:56,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378097079] [2024-10-10 21:56:56,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 21:56:56,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:56:56,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:56:56,947 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) [2024-10-10 21:56:56,948 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