./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/simple_4-2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fb1cb0b9 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-acceleration/simple_4-2.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --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 62bcb708de755b88a1a7e669e7098af987fbf7eaf8ee29cdc64c62ec3900629f --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-fb1cb0b-m [2024-09-25 10:19:41,265 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 10:19:41,323 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 10:19:41,327 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 10:19:41,327 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 10:19:41,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 10:19:41,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 10:19:41,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 10:19:41,353 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 10:19:41,354 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 10:19:41,356 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 10:19:41,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 10:19:41,356 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 10:19:41,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 10:19:41,357 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 10:19:41,357 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 10:19:41,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 10:19:41,358 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 10:19:41,358 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 10:19:41,358 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 10:19:41,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 10:19:41,359 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 10:19:41,359 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 10:19:41,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 10:19:41,359 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 10:19:41,360 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 10:19:41,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 10:19:41,360 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 10:19:41,360 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 10:19:41,361 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 10:19:41,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 10:19:41,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 10:19:41,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 10:19:41,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 10:19:41,368 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 10:19:41,368 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 10:19:41,368 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 10:19:41,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 10:19:41,369 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 10:19:41,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 10:19:41,369 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 10:19:41,369 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 10:19:41,369 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/certificate-witnesses-artifact/automizer/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/certificate-witnesses-artifact/automizer 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 -> 62bcb708de755b88a1a7e669e7098af987fbf7eaf8ee29cdc64c62ec3900629f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Encode 'modifies' clause in 'ensures' clause of contracts -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 10:19:41,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 10:19:41,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 10:19:41,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 10:19:41,616 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 10:19:41,616 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 10:19:41,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-acceleration/simple_4-2.c [2024-09-25 10:19:42,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 10:19:42,931 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 10:19:42,931 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-acceleration/simple_4-2.c [2024-09-25 10:19:42,939 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e979bceb2/775ea47132854215b850686e36a8aeab/FLAG591a45848 [2024-09-25 10:19:42,953 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e979bceb2/775ea47132854215b850686e36a8aeab [2024-09-25 10:19:42,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 10:19:42,958 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 10:19:42,960 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 10:19:42,961 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 10:19:42,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 10:19:42,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:19:42" (1/1) ... [2024-09-25 10:19:42,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23880acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:42, skipping insertion in model container [2024-09-25 10:19:42,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:19:42" (1/1) ... [2024-09-25 10:19:42,980 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 10:19:43,107 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-acceleration/simple_4-2.c[322,335] [2024-09-25 10:19:43,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 10:19:43,129 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 10:19:43,139 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-acceleration/simple_4-2.c[322,335] [2024-09-25 10:19:43,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 10:19:43,154 INFO L204 MainTranslator]: Completed translation [2024-09-25 10:19:43,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:43 WrapperNode [2024-09-25 10:19:43,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 10:19:43,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 10:19:43,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 10:19:43,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 10:19:43,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:43" (1/1) ... [2024-09-25 10:19:43,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:43" (1/1) ... [2024-09-25 10:19:43,171 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 10:19:43,171 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 10:19:43,172 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 10:19:43,172 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 10:19:43,172 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 10:19:43,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:43" (1/1) ... [2024-09-25 10:19:43,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:43" (1/1) ... [2024-09-25 10:19:43,181 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:43" (1/1) ... [2024-09-25 10:19:43,189 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-25 10:19:43,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:43" (1/1) ... [2024-09-25 10:19:43,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:43" (1/1) ... [2024-09-25 10:19:43,191 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:43" (1/1) ... [2024-09-25 10:19:43,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:43" (1/1) ... [2024-09-25 10:19:43,194 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:43" (1/1) ... [2024-09-25 10:19:43,197 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:43" (1/1) ... [2024-09-25 10:19:43,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 10:19:43,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 10:19:43,199 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 10:19:43,199 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 10:19:43,200 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:43" (1/1) ... [2024-09-25 10:19:43,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 10:19:43,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:19:43,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-25 10:19:43,233 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-25 10:19:43,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 10:19:43,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 10:19:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 10:19:43,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 10:19:43,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 10:19:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 10:19:43,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 10:19:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 10:19:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 10:19:43,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 10:19:43,315 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 10:19:43,316 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 10:19:43,411 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-09-25 10:19:43,411 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 10:19:43,431 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 10:19:43,435 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-25 10:19:43,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:19:43 BoogieIcfgContainer [2024-09-25 10:19:43,435 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 10:19:43,442 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 10:19:43,442 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 10:19:43,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 10:19:43,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:19:42" (1/3) ... [2024-09-25 10:19:43,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f18d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:19:43, skipping insertion in model container [2024-09-25 10:19:43,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:43" (2/3) ... [2024-09-25 10:19:43,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f18d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:19:43, skipping insertion in model container [2024-09-25 10:19:43,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:19:43" (3/3) ... [2024-09-25 10:19:43,447 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_4-2.c [2024-09-25 10:19:43,459 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 10:19:43,459 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 10:19:43,508 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 10:19:43,513 INFO L336 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=All, 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;@43e22027, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 10:19:43,513 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 10:19:43,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-25 10:19:43,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-25 10:19:43,521 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:19:43,521 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:19:43,522 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:19:43,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:19:43,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1861917190, now seen corresponding path program 1 times [2024-09-25 10:19:43,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:19:43,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439740084] [2024-09-25 10:19:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:19:43,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:19:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:19:43,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:19:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:19:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:19:43,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:19:43,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439740084] [2024-09-25 10:19:43,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439740084] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:19:43,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:19:43,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 10:19:43,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067520848] [2024-09-25 10:19:43,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:19:43,653 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 10:19:43,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:19:43,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 10:19:43,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 10:19:43,674 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:19:43,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:19:43,692 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2024-09-25 10:19:43,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 10:19:43,694 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-25 10:19:43,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:19:43,699 INFO L225 Difference]: With dead ends: 28 [2024-09-25 10:19:43,699 INFO L226 Difference]: Without dead ends: 11 [2024-09-25 10:19:43,701 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 10:19:43,704 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:19:43,706 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:19:43,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-09-25 10:19:43,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-09-25 10:19:43,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:19:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2024-09-25 10:19:43,732 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 10 [2024-09-25 10:19:43,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:19:43,733 INFO L474 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2024-09-25 10:19:43,733 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:19:43,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:19:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2024-09-25 10:19:43,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-25 10:19:43,734 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:19:43,734 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:19:43,734 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 10:19:43,734 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:19:43,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:19:43,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1858223106, now seen corresponding path program 1 times [2024-09-25 10:19:43,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:19:43,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131203290] [2024-09-25 10:19:43,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:19:43,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:19:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:19:43,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:19:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:19:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:19:43,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:19:43,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131203290] [2024-09-25 10:19:43,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131203290] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:19:43,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:19:43,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-25 10:19:43,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076135209] [2024-09-25 10:19:43,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:19:43,897 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-25 10:19:43,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:19:43,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-25 10:19:43,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-25 10:19:43,898 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:19:43,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:19:43,907 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2024-09-25 10:19:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-25 10:19:43,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-25 10:19:43,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:19:43,908 INFO L225 Difference]: With dead ends: 17 [2024-09-25 10:19:43,908 INFO L226 Difference]: Without dead ends: 12 [2024-09-25 10:19:43,908 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-25 10:19:43,909 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:19:43,910 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:19:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-09-25 10:19:43,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-09-25 10:19:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:19:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-09-25 10:19:43,914 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2024-09-25 10:19:43,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:19:43,914 INFO L474 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-09-25 10:19:43,914 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:19:43,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:19:43,915 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-09-25 10:19:43,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-25 10:19:43,915 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:19:43,915 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:19:43,915 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-25 10:19:43,916 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:19:43,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:19:43,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1806802702, now seen corresponding path program 1 times [2024-09-25 10:19:43,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:19:43,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415679433] [2024-09-25 10:19:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:19:43,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:19:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:19:44,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:19:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:19:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:19:44,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:19:44,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415679433] [2024-09-25 10:19:44,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415679433] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:19:44,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262445267] [2024-09-25 10:19:44,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:19:44,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:19:44,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:19:44,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:19:44,015 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 10:19:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:19:44,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-25 10:19:44,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:19:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:19:44,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:19:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:19:44,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262445267] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:19:44,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:19:44,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-25 10:19:44,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132491411] [2024-09-25 10:19:44,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:19:44,146 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-25 10:19:44,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:19:44,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-25 10:19:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-09-25 10:19:44,147 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:19:44,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:19:44,184 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2024-09-25 10:19:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 10:19:44,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-25 10:19:44,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:19:44,185 INFO L225 Difference]: With dead ends: 20 [2024-09-25 10:19:44,185 INFO L226 Difference]: Without dead ends: 15 [2024-09-25 10:19:44,186 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-09-25 10:19:44,186 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:19:44,187 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:19:44,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-09-25 10:19:44,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-09-25 10:19:44,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:19:44,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-09-25 10:19:44,195 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2024-09-25 10:19:44,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:19:44,195 INFO L474 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-09-25 10:19:44,195 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:19:44,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:19:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-09-25 10:19:44,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-25 10:19:44,197 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:19:44,197 INFO L216 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:19:44,210 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-25 10:19:44,398 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:19:44,398 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:19:44,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:19:44,399 INFO L85 PathProgramCache]: Analyzing trace with hash -519528702, now seen corresponding path program 2 times [2024-09-25 10:19:44,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:19:44,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239363790] [2024-09-25 10:19:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:19:44,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:19:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:19:44,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:19:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:19:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:19:44,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:19:44,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239363790] [2024-09-25 10:19:44,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239363790] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:19:44,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788852874] [2024-09-25 10:19:44,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:19:44,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:19:44,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:19:44,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:19:44,541 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 10:19:44,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-25 10:19:44,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:19:44,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-25 10:19:44,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:19:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-25 10:19:44,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:19:44,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788852874] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:19:44,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 10:19:44,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-09-25 10:19:44,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993855538] [2024-09-25 10:19:44,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:19:44,646 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:19:44,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:19:44,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:19:44,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-09-25 10:19:44,647 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:19:44,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:19:44,671 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2024-09-25 10:19:44,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 10:19:44,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-09-25 10:19:44,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:19:44,671 INFO L225 Difference]: With dead ends: 15 [2024-09-25 10:19:44,672 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 10:19:44,672 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-09-25 10:19:44,673 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:19:44,673 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:19:44,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 10:19:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 10:19:44,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-09-25 10:19:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 10:19:44,674 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2024-09-25 10:19:44,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:19:44,674 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 10:19:44,674 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 10:19:44,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:19:44,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 10:19:44,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 10:19:44,679 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 10:19:44,693 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 10:19:44,880 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:19:44,883 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-09-25 10:19:44,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 10:19:44,929 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 10:19:44,938 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:19:44,938 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:19:44,939 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:19:44,939 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:19:44,939 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:19:44,939 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:19:44,939 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:19:44,939 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:19:44,940 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:19:44,940 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:19:44,940 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:19:44,940 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:19:44,940 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:19:44,940 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:19:44,940 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:19:44,940 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:19:44,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:19:44 BoogieIcfgContainer [2024-09-25 10:19:44,941 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 10:19:44,941 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 10:19:44,941 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 10:19:44,942 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 10:19:44,942 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:19:43" (3/4) ... [2024-09-25 10:19:44,943 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 10:19:44,980 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 10:19:44,980 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 10:19:44,981 INFO L158 Benchmark]: Toolchain (without parser) took 2022.99ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 38.3MB in the beginning and 52.5MB in the end (delta: -14.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 10:19:44,983 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory is still 31.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 10:19:44,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.59ms. Allocated memory is still 69.2MB. Free memory was 38.0MB in the beginning and 43.0MB in the end (delta: -5.0MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2024-09-25 10:19:44,984 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.52ms. Allocated memory is still 69.2MB. Free memory was 43.0MB in the beginning and 42.1MB in the end (delta: 829.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 10:19:44,984 INFO L158 Benchmark]: Boogie Preprocessor took 26.39ms. Allocated memory is still 69.2MB. Free memory was 41.9MB in the beginning and 40.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 10:19:44,985 INFO L158 Benchmark]: RCFGBuilder took 236.37ms. Allocated memory is still 69.2MB. Free memory was 40.3MB in the beginning and 29.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-25 10:19:44,985 INFO L158 Benchmark]: TraceAbstraction took 1499.31ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 48.7MB in the beginning and 54.7MB in the end (delta: -5.9MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2024-09-25 10:19:44,985 INFO L158 Benchmark]: Witness Printer took 39.11ms. Allocated memory is still 83.9MB. Free memory was 54.7MB in the beginning and 52.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 10:19:44,986 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory is still 31.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.59ms. Allocated memory is still 69.2MB. Free memory was 38.0MB in the beginning and 43.0MB in the end (delta: -5.0MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.52ms. Allocated memory is still 69.2MB. Free memory was 43.0MB in the beginning and 42.1MB in the end (delta: 829.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.39ms. Allocated memory is still 69.2MB. Free memory was 41.9MB in the beginning and 40.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 236.37ms. Allocated memory is still 69.2MB. Free memory was 40.3MB in the beginning and 29.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1499.31ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 48.7MB in the beginning and 54.7MB in the end (delta: -5.9MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Witness Printer took 39.11ms. Allocated memory is still 83.9MB. Free memory was 54.7MB in the beginning and 52.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 41 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 70 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 130 SizeOfPredicates, 1 NumberOfNonLiveVariables, 83 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 10/23 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-25 10:19:45,011 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE