./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-zilu/benchmark43_conjunctive_abstracted.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/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-zilu/benchmark43_conjunctive_abstracted.i -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 95b5179edb030463668b341d624243529de83b4afda6c4d2e0bf3bc1cb57b210 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-18 15:51:01,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 15:51:01,965 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 15:51:01,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 15:51:01,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 15:51:01,999 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 15:51:02,000 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 15:51:02,000 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 15:51:02,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 15:51:02,000 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 15:51:02,001 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 15:51:02,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 15:51:02,001 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 15:51:02,001 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 15:51:02,002 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 15:51:02,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 15:51:02,004 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 15:51:02,006 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 15:51:02,006 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 15:51:02,006 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 15:51:02,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 15:51:02,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 15:51:02,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 15:51:02,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 15:51:02,009 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 15:51:02,009 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 15:51:02,009 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 15:51:02,009 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 15:51:02,010 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 15:51:02,010 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 15:51:02,010 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 15:51:02,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 15:51:02,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:51:02,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 15:51:02,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 15:51:02,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 15:51:02,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 15:51:02,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 15:51:02,011 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 15:51:02,011 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 15:51:02,011 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 15:51:02,013 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 15:51:02,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95b5179edb030463668b341d624243529de83b4afda6c4d2e0bf3bc1cb57b210 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 15:51:02,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 15:51:02,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 15:51:02,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 15:51:02,245 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 15:51:02,245 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 15:51:02,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-zilu/benchmark43_conjunctive_abstracted.i [2024-09-18 15:51:03,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 15:51:03,698 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 15:51:03,698 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-zilu/benchmark43_conjunctive_abstracted.i [2024-09-18 15:51:03,706 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/0a4a0be8e/52dd70dc121b4774953822c730c03a0d/FLAGa59b92e13 [2024-09-18 15:51:04,099 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/0a4a0be8e/52dd70dc121b4774953822c730c03a0d [2024-09-18 15:51:04,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 15:51:04,102 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 15:51:04,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 15:51:04,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 15:51:04,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 15:51:04,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:51:04" (1/1) ... [2024-09-18 15:51:04,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3492e657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04, skipping insertion in model container [2024-09-18 15:51:04,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:51:04" (1/1) ... [2024-09-18 15:51:04,125 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 15:51:04,232 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-zilu/benchmark43_conjunctive_abstracted.i[909,922] [2024-09-18 15:51:04,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:51:04,252 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 15:51:04,261 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-zilu/benchmark43_conjunctive_abstracted.i[909,922] [2024-09-18 15:51:04,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:51:04,284 INFO L204 MainTranslator]: Completed translation [2024-09-18 15:51:04,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04 WrapperNode [2024-09-18 15:51:04,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 15:51:04,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 15:51:04,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 15:51:04,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 15:51:04,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04" (1/1) ... [2024-09-18 15:51:04,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04" (1/1) ... [2024-09-18 15:51:04,308 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 15:51:04,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 15:51:04,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 15:51:04,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 15:51:04,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 15:51:04,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04" (1/1) ... [2024-09-18 15:51:04,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04" (1/1) ... [2024-09-18 15:51:04,320 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04" (1/1) ... [2024-09-18 15:51:04,337 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]. [2024-09-18 15:51:04,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04" (1/1) ... [2024-09-18 15:51:04,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04" (1/1) ... [2024-09-18 15:51:04,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04" (1/1) ... [2024-09-18 15:51:04,341 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04" (1/1) ... [2024-09-18 15:51:04,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04" (1/1) ... [2024-09-18 15:51:04,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04" (1/1) ... [2024-09-18 15:51:04,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 15:51:04,344 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 15:51:04,344 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 15:51:04,344 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 15:51:04,345 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04" (1/1) ... [2024-09-18 15:51:04,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:51:04,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:04,372 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) [2024-09-18 15:51:04,381 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 [2024-09-18 15:51:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 15:51:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 15:51:04,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 15:51:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 15:51:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 15:51:04,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 15:51:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 15:51:04,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 15:51:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-18 15:51:04,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-18 15:51:04,473 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 15:51:04,475 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 15:51:04,706 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-18 15:51:04,707 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 15:51:04,723 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 15:51:04,724 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-18 15:51:04,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:51:04 BoogieIcfgContainer [2024-09-18 15:51:04,724 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 15:51:04,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 15:51:04,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 15:51:04,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 15:51:04,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 03:51:04" (1/3) ... [2024-09-18 15:51:04,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a09b057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:51:04, skipping insertion in model container [2024-09-18 15:51:04,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:04" (2/3) ... [2024-09-18 15:51:04,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a09b057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:51:04, skipping insertion in model container [2024-09-18 15:51:04,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:51:04" (3/3) ... [2024-09-18 15:51:04,733 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark43_conjunctive_abstracted.i [2024-09-18 15:51:04,745 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 15:51:04,746 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 15:51:04,781 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 15:51:04,786 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;@124c0e05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 15:51:04,786 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 15:51:04,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 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) [2024-09-18 15:51:04,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-18 15:51:04,794 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:04,795 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:04,795 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:04,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:04,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1890662889, now seen corresponding path program 1 times [2024-09-18 15:51:04,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:04,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787041714] [2024-09-18 15:51:04,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:04,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:05,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:51:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:51:05,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:05,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787041714] [2024-09-18 15:51:05,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787041714] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:51:05,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:51:05,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-18 15:51:05,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324313443] [2024-09-18 15:51:05,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:51:05,086 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-18 15:51:05,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-18 15:51:05,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-18 15:51:05,103 INFO L87 Difference]: Start difference. First operand has 31 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 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 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-09-18 15:51:05,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:05,144 INFO L93 Difference]: Finished difference Result 58 states and 83 transitions. [2024-09-18 15:51:05,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-18 15:51:05,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 12 [2024-09-18 15:51:05,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:05,151 INFO L225 Difference]: With dead ends: 58 [2024-09-18 15:51:05,152 INFO L226 Difference]: Without dead ends: 25 [2024-09-18 15:51:05,154 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 [2024-09-18 15:51:05,156 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 9 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:05,157 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 48 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:51:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-18 15:51:05,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-09-18 15:51:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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) [2024-09-18 15:51:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-18 15:51:05,181 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 12 [2024-09-18 15:51:05,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:05,182 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-18 15:51:05,182 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-09-18 15:51:05,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-18 15:51:05,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-18 15:51:05,183 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:05,183 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:05,183 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 15:51:05,183 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:05,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:05,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1816780584, now seen corresponding path program 1 times [2024-09-18 15:51:05,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:05,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957981397] [2024-09-18 15:51:05,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:05,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:05,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:51:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:51:05,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:05,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957981397] [2024-09-18 15:51:05,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957981397] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:51:05,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:51:05,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-18 15:51:05,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054147904] [2024-09-18 15:51:05,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:51:05,265 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-18 15:51:05,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:05,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-18 15:51:05,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-18 15:51:05,270 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-09-18 15:51:05,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:05,333 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2024-09-18 15:51:05,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-18 15:51:05,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 13 [2024-09-18 15:51:05,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:05,334 INFO L225 Difference]: With dead ends: 30 [2024-09-18 15:51:05,334 INFO L226 Difference]: Without dead ends: 25 [2024-09-18 15:51:05,335 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:51:05,336 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:05,336 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 50 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:51:05,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-18 15:51:05,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-09-18 15:51:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2024-09-18 15:51:05,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-09-18 15:51:05,341 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 13 [2024-09-18 15:51:05,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:05,342 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-09-18 15:51:05,342 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-09-18 15:51:05,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:05,342 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-09-18 15:51:05,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-18 15:51:05,342 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:05,343 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:05,343 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-18 15:51:05,343 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:05,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1559870199, now seen corresponding path program 1 times [2024-09-18 15:51:05,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:05,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782485042] [2024-09-18 15:51:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:05,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:05,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:51:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:05,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:51:05,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:05,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782485042] [2024-09-18 15:51:05,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782485042] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:51:05,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:51:05,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-18 15:51:05,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925631532] [2024-09-18 15:51:05,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:51:05,385 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-18 15:51:05,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:05,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-18 15:51:05,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-18 15:51:05,386 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-09-18 15:51:05,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:05,392 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2024-09-18 15:51:05,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-18 15:51:05,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 18 [2024-09-18 15:51:05,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:05,393 INFO L225 Difference]: With dead ends: 31 [2024-09-18 15:51:05,394 INFO L226 Difference]: Without dead ends: 21 [2024-09-18 15:51:05,394 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-18 15:51:05,395 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 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 [2024-09-18 15:51:05,395 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:51:05,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-18 15:51:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-18 15:51:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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) [2024-09-18 15:51:05,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2024-09-18 15:51:05,398 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2024-09-18 15:51:05,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:05,399 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2024-09-18 15:51:05,399 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-09-18 15:51:05,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:05,399 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2024-09-18 15:51:05,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-18 15:51:05,400 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:05,400 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:05,400 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-18 15:51:05,400 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:05,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:05,400 INFO L85 PathProgramCache]: Analyzing trace with hash -26542991, now seen corresponding path program 1 times [2024-09-18 15:51:05,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:05,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026836392] [2024-09-18 15:51:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:05,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:05,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:51:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:51:05,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:05,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026836392] [2024-09-18 15:51:05,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026836392] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:51:05,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:51:05,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-18 15:51:05,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247081768] [2024-09-18 15:51:05,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:51:05,601 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-18 15:51:05,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:05,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-18 15:51:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-18 15:51:05,602 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2024-09-18 15:51:05,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:05,639 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2024-09-18 15:51:05,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-18 15:51:05,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 19 [2024-09-18 15:51:05,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:05,640 INFO L225 Difference]: With dead ends: 27 [2024-09-18 15:51:05,640 INFO L226 Difference]: Without dead ends: 21 [2024-09-18 15:51:05,641 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-18 15:51:05,641 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:05,642 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 49 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:51:05,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-18 15:51:05,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-18 15:51:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.0) internal successors, (16), 16 states have internal predecessors, (16), 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) [2024-09-18 15:51:05,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2024-09-18 15:51:05,645 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 19 [2024-09-18 15:51:05,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:05,645 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2024-09-18 15:51:05,645 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2024-09-18 15:51:05,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:05,646 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2024-09-18 15:51:05,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-18 15:51:05,646 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:05,646 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:05,647 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-18 15:51:05,647 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:05,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:05,647 INFO L85 PathProgramCache]: Analyzing trace with hash 674609057, now seen corresponding path program 1 times [2024-09-18 15:51:05,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:05,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858813925] [2024-09-18 15:51:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:05,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:05,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:51:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:51:05,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:05,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858813925] [2024-09-18 15:51:05,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858813925] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:51:05,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:51:05,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-18 15:51:05,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400512750] [2024-09-18 15:51:05,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:51:05,680 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-18 15:51:05,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:05,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-18 15:51:05,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-18 15:51:05,681 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-09-18 15:51:05,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:05,699 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2024-09-18 15:51:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-18 15:51:05,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 20 [2024-09-18 15:51:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:05,700 INFO L225 Difference]: With dead ends: 21 [2024-09-18 15:51:05,700 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 15:51:05,700 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:51:05,701 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:05,701 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:51:05,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 15:51:05,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 15:51:05,702 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) [2024-09-18 15:51:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 15:51:05,702 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2024-09-18 15:51:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:05,702 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 15:51:05,702 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-09-18 15:51:05,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 15:51:05,703 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 15:51:05,705 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 15:51:05,705 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-18 15:51:05,708 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-18 15:51:05,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 15:51:05,795 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 15:51:05,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 03:51:05 BoogieIcfgContainer [2024-09-18 15:51:05,810 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 15:51:05,811 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 15:51:05,811 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 15:51:05,811 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 15:51:05,811 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:51:04" (3/4) ... [2024-09-18 15:51:05,814 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 15:51:05,857 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 15:51:05,857 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 15:51:05,858 INFO L158 Benchmark]: Toolchain (without parser) took 1755.88ms. Allocated memory is still 151.0MB. Free memory was 82.5MB in the beginning and 80.1MB in the end (delta: 2.4MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2024-09-18 15:51:05,859 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory was 74.7MB in the beginning and 74.5MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:51:05,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.68ms. Allocated memory is still 151.0MB. Free memory was 82.3MB in the beginning and 70.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-18 15:51:05,862 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.71ms. Allocated memory is still 151.0MB. Free memory was 70.9MB in the beginning and 70.0MB in the end (delta: 950.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:51:05,862 INFO L158 Benchmark]: Boogie Preprocessor took 34.62ms. Allocated memory is still 151.0MB. Free memory was 70.0MB in the beginning and 68.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:51:05,862 INFO L158 Benchmark]: RCFGBuilder took 379.93ms. Allocated memory is still 151.0MB. Free memory was 68.1MB in the beginning and 118.8MB in the end (delta: -50.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-18 15:51:05,863 INFO L158 Benchmark]: TraceAbstraction took 1082.87ms. Allocated memory is still 151.0MB. Free memory was 118.1MB in the beginning and 83.3MB in the end (delta: 34.8MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. [2024-09-18 15:51:05,863 INFO L158 Benchmark]: Witness Printer took 46.45ms. Allocated memory is still 151.0MB. Free memory was 82.2MB in the beginning and 80.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:51:05,864 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory was 74.7MB in the beginning and 74.5MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.68ms. Allocated memory is still 151.0MB. Free memory was 82.3MB in the beginning and 70.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.71ms. Allocated memory is still 151.0MB. Free memory was 70.9MB in the beginning and 70.0MB in the end (delta: 950.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.62ms. Allocated memory is still 151.0MB. Free memory was 70.0MB in the beginning and 68.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 379.93ms. Allocated memory is still 151.0MB. Free memory was 68.1MB in the beginning and 118.8MB in the end (delta: -50.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1082.87ms. Allocated memory is still 151.0MB. Free memory was 118.1MB in the beginning and 83.3MB in the end (delta: 34.8MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. * Witness Printer took 46.45ms. Allocated memory is still 151.0MB. Free memory was 82.2MB in the beginning and 80.1MB 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.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: 17]: 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, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 207 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 98 IncrementalHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 95 mSDtfsCounter, 98 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 21, 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-18 15:51:05,888 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