./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 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/nla-digbench-scaling/divbin_valuebound1.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 ea97fe631de3abcfa1030cdb800e2845e2e97a42347e391a7c9fd401d3d0b815 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 00:06:33,939 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 00:06:34,011 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 00:06:34,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 00:06:34,016 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 00:06:34,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 00:06:34,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 00:06:34,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 00:06:34,053 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 00:06:34,055 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 00:06:34,055 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 00:06:34,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 00:06:34,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 00:06:34,058 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 00:06:34,058 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 00:06:34,059 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 00:06:34,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 00:06:34,059 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 00:06:34,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 00:06:34,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 00:06:34,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 00:06:34,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 00:06:34,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 00:06:34,063 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 00:06:34,063 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 00:06:34,064 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 00:06:34,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 00:06:34,064 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 00:06:34,064 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 00:06:34,065 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 00:06:34,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 00:06:34,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 00:06:34,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 00:06:34,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 00:06:34,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 00:06:34,066 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 00:06:34,067 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 00:06:34,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 00:06:34,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 00:06:34,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 00:06:34,068 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 00:06:34,069 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 00:06:34,069 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea97fe631de3abcfa1030cdb800e2845e2e97a42347e391a7c9fd401d3d0b815 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 00:06:34,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 00:06:34,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 00:06:34,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 00:06:34,337 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 00:06:34,338 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 00:06:34,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i [2024-09-13 00:06:35,859 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 00:06:36,031 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 00:06:36,031 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i [2024-09-13 00:06:36,039 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3bff9d986/e641f99a947f45d291b602e1482faf08/FLAGa5cf37832 [2024-09-13 00:06:36,053 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3bff9d986/e641f99a947f45d291b602e1482faf08 [2024-09-13 00:06:36,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 00:06:36,057 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 00:06:36,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 00:06:36,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 00:06:36,065 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 00:06:36,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 12:06:36" (1/1) ... [2024-09-13 00:06:36,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a27a7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36, skipping insertion in model container [2024-09-13 00:06:36,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 12:06:36" (1/1) ... [2024-09-13 00:06:36,087 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 00:06:36,236 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i[950,963] [2024-09-13 00:06:36,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 00:06:36,261 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 00:06:36,272 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i[950,963] [2024-09-13 00:06:36,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 00:06:36,292 INFO L204 MainTranslator]: Completed translation [2024-09-13 00:06:36,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36 WrapperNode [2024-09-13 00:06:36,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 00:06:36,294 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 00:06:36,294 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 00:06:36,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 00:06:36,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36" (1/1) ... [2024-09-13 00:06:36,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36" (1/1) ... [2024-09-13 00:06:36,312 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 00:06:36,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 00:06:36,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 00:06:36,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 00:06:36,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 00:06:36,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36" (1/1) ... [2024-09-13 00:06:36,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36" (1/1) ... [2024-09-13 00:06:36,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36" (1/1) ... [2024-09-13 00:06:36,337 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]. [2024-09-13 00:06:36,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36" (1/1) ... [2024-09-13 00:06:36,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36" (1/1) ... [2024-09-13 00:06:36,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36" (1/1) ... [2024-09-13 00:06:36,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36" (1/1) ... [2024-09-13 00:06:36,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36" (1/1) ... [2024-09-13 00:06:36,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36" (1/1) ... [2024-09-13 00:06:36,347 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 00:06:36,348 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 00:06:36,348 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 00:06:36,348 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 00:06:36,349 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36" (1/1) ... [2024-09-13 00:06:36,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 00:06:36,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:06:36,385 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) [2024-09-13 00:06:36,387 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 [2024-09-13 00:06:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 00:06:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 00:06:36,426 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 00:06:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 00:06:36,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 00:06:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 00:06:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 00:06:36,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 00:06:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 00:06:36,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 00:06:36,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 00:06:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 00:06:36,481 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 00:06:36,483 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 00:06:36,625 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-13 00:06:36,626 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 00:06:36,643 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 00:06:36,644 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-13 00:06:36,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 12:06:36 BoogieIcfgContainer [2024-09-13 00:06:36,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 00:06:36,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 00:06:36,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 00:06:36,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 00:06:36,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 12:06:36" (1/3) ... [2024-09-13 00:06:36,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b51a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 12:06:36, skipping insertion in model container [2024-09-13 00:06:36,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:06:36" (2/3) ... [2024-09-13 00:06:36,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b51a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 12:06:36, skipping insertion in model container [2024-09-13 00:06:36,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 12:06:36" (3/3) ... [2024-09-13 00:06:36,657 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin_valuebound1.i [2024-09-13 00:06:36,686 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 00:06:36,686 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 00:06:36,775 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 00:06:36,785 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;@258c10f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 00:06:36,785 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 00:06:36,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 00:06:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-13 00:06:36,803 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:06:36,804 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:06:36,805 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:06:36,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:06:36,811 INFO L85 PathProgramCache]: Analyzing trace with hash -923394275, now seen corresponding path program 1 times [2024-09-13 00:06:36,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:06:36,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934183994] [2024-09-13 00:06:36,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:06:36,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:06:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:36,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 00:06:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:36,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 00:06:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:36,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 00:06:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:36,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 00:06:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:36,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 00:06:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:36,995 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 00:06:36,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:06:36,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934183994] [2024-09-13 00:06:36,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934183994] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 00:06:36,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 00:06:36,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 00:06:36,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444514708] [2024-09-13 00:06:37,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:06:37,004 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 00:06:37,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:06:37,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 00:06:37,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 00:06:37,026 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 00:06:37,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:06:37,052 INFO L93 Difference]: Finished difference Result 58 states and 87 transitions. [2024-09-13 00:06:37,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 00:06:37,055 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-13 00:06:37,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:06:37,062 INFO L225 Difference]: With dead ends: 58 [2024-09-13 00:06:37,062 INFO L226 Difference]: Without dead ends: 28 [2024-09-13 00:06:37,065 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 00:06:37,068 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 00:06:37,069 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 00:06:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-13 00:06:37,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-13 00:06:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 00:06:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-09-13 00:06:37,108 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 33 [2024-09-13 00:06:37,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:06:37,110 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-09-13 00:06:37,110 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 00:06:37,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:06:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-09-13 00:06:37,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-13 00:06:37,116 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:06:37,116 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:06:37,116 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 00:06:37,117 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:06:37,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:06:37,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1193042891, now seen corresponding path program 1 times [2024-09-13 00:06:37,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:06:37,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326630106] [2024-09-13 00:06:37,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:06:37,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:06:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:06:37,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221830893] [2024-09-13 00:06:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:06:37,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:06:37,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:06:37,175 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) [2024-09-13 00:06:37,177 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 00:06:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:37,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-13 00:06:37,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:06:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 00:06:37,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:06:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 00:06:37,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:06:37,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326630106] [2024-09-13 00:06:37,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:06:37,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221830893] [2024-09-13 00:06:37,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221830893] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 00:06:37,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 00:06:37,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2024-09-13 00:06:37,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797675844] [2024-09-13 00:06:37,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:06:37,911 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 00:06:37,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:06:37,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 00:06:37,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-09-13 00:06:37,915 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-13 00:06:38,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:06:38,470 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-09-13 00:06:38,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 00:06:38,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2024-09-13 00:06:38,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:06:38,473 INFO L225 Difference]: With dead ends: 40 [2024-09-13 00:06:38,474 INFO L226 Difference]: Without dead ends: 37 [2024-09-13 00:06:38,474 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-09-13 00:06:38,476 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 00:06:38,476 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 99 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 00:06:38,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-13 00:06:38,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-13 00:06:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 00:06:38,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2024-09-13 00:06:38,491 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 34 [2024-09-13 00:06:38,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:06:38,493 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2024-09-13 00:06:38,493 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-13 00:06:38,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:06:38,495 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2024-09-13 00:06:38,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-13 00:06:38,496 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:06:38,497 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:06:38,511 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 00:06:38,701 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:06:38,702 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:06:38,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:06:38,702 INFO L85 PathProgramCache]: Analyzing trace with hash 336856806, now seen corresponding path program 1 times [2024-09-13 00:06:38,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:06:38,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227870159] [2024-09-13 00:06:38,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:06:38,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:06:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:06:38,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486006184] [2024-09-13 00:06:38,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:06:38,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:06:38,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:06:38,768 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) [2024-09-13 00:06:38,773 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 00:06:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:38,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-13 00:06:38,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:06:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-13 00:06:39,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:06:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-13 00:06:39,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:06:39,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227870159] [2024-09-13 00:06:39,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:06:39,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486006184] [2024-09-13 00:06:39,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486006184] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 00:06:39,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 00:06:39,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2024-09-13 00:06:39,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575342661] [2024-09-13 00:06:39,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:06:39,416 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 00:06:39,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:06:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 00:06:39,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-09-13 00:06:39,418 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-13 00:06:40,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:06:40,322 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2024-09-13 00:06:40,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 00:06:40,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2024-09-13 00:06:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:06:40,324 INFO L225 Difference]: With dead ends: 47 [2024-09-13 00:06:40,325 INFO L226 Difference]: Without dead ends: 44 [2024-09-13 00:06:40,325 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-13 00:06:40,326 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-13 00:06:40,327 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-13 00:06:40,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-13 00:06:40,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2024-09-13 00:06:40,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 00:06:40,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-09-13 00:06:40,339 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 36 [2024-09-13 00:06:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:06:40,340 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-09-13 00:06:40,340 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-13 00:06:40,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:06:40,342 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-09-13 00:06:40,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-13 00:06:40,347 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:06:40,347 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:06:40,366 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 00:06:40,548 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:06:40,549 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:06:40,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:06:40,550 INFO L85 PathProgramCache]: Analyzing trace with hash 513117096, now seen corresponding path program 1 times [2024-09-13 00:06:40,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:06:40,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468658030] [2024-09-13 00:06:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:06:40,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:06:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:41,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 00:06:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:41,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 00:06:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:41,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 00:06:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:41,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 00:06:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:41,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 00:06:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:41,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 00:06:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 00:06:41,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:06:41,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468658030] [2024-09-13 00:06:41,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468658030] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 00:06:41,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 00:06:41,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 00:06:41,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581110292] [2024-09-13 00:06:41,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:06:41,142 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 00:06:41,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:06:41,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 00:06:41,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-13 00:06:41,143 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 00:06:41,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:06:41,185 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2024-09-13 00:06:41,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 00:06:41,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2024-09-13 00:06:41,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:06:41,187 INFO L225 Difference]: With dead ends: 51 [2024-09-13 00:06:41,187 INFO L226 Difference]: Without dead ends: 37 [2024-09-13 00:06:41,187 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-13 00:06:41,188 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 00:06:41,188 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 55 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 00:06:41,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-13 00:06:41,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-13 00:06:41,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 00:06:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-09-13 00:06:41,203 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 42 [2024-09-13 00:06:41,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:06:41,203 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-09-13 00:06:41,204 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 00:06:41,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:06:41,204 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-09-13 00:06:41,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-13 00:06:41,206 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:06:41,206 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:06:41,206 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 00:06:41,207 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:06:41,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:06:41,207 INFO L85 PathProgramCache]: Analyzing trace with hash 980542403, now seen corresponding path program 1 times [2024-09-13 00:06:41,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:06:41,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024591321] [2024-09-13 00:06:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:06:41,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:06:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:06:41,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275147502] [2024-09-13 00:06:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:06:41,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:06:41,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:06:41,255 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 00:06:41,257 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 00:06:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:06:41,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-13 00:06:41,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:06:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-13 00:06:41,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:07:09,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:07:09,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024591321] [2024-09-13 00:07:09,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:07:09,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275147502] [2024-09-13 00:07:09,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275147502] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 00:07:09,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 00:07:09,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-09-13 00:07:09,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446642963] [2024-09-13 00:07:09,769 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 00:07:09,769 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 00:07:09,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:07:09,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 00:07:09,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=194, Unknown=5, NotChecked=0, Total=240 [2024-09-13 00:07:09,771 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-13 00:07:09,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:07:09,998 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2024-09-13 00:07:09,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 00:07:09,998 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 44 [2024-09-13 00:07:09,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:07:09,999 INFO L225 Difference]: With dead ends: 52 [2024-09-13 00:07:09,999 INFO L226 Difference]: Without dead ends: 48 [2024-09-13 00:07:10,000 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=47, Invalid=220, Unknown=5, NotChecked=0, Total=272 [2024-09-13 00:07:10,001 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 00:07:10,001 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 128 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 00:07:10,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-13 00:07:10,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2024-09-13 00:07:10,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 00:07:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-09-13 00:07:10,014 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 44 [2024-09-13 00:07:10,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:07:10,015 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-09-13 00:07:10,015 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-13 00:07:10,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:07:10,016 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-09-13 00:07:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-13 00:07:10,018 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:07:10,018 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:07:10,027 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 00:07:10,222 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:07:10,223 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:07:10,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:07:10,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2109238368, now seen corresponding path program 2 times [2024-09-13 00:07:10,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:07:10,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522843422] [2024-09-13 00:07:10,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:07:10,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:07:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:07:10,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 00:07:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:07:10,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 00:07:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:07:10,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 00:07:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:07:10,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 00:07:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:07:10,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 00:07:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:07:10,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-13 00:07:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:07:10,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 00:07:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:07:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-13 00:07:10,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:07:10,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522843422] [2024-09-13 00:07:10,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522843422] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 00:07:10,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448558936] [2024-09-13 00:07:10,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 00:07:10,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:07:10,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:07:10,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 00:07:10,824 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 00:07:10,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 00:07:10,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 00:07:10,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-13 00:07:10,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:07:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-13 00:07:11,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:07:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-13 00:07:12,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448558936] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 00:07:12,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 00:07:12,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 23 [2024-09-13 00:07:12,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979692030] [2024-09-13 00:07:12,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 00:07:12,677 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-13 00:07:12,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:07:12,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-13 00:07:12,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-09-13 00:07:12,678 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 19 states have internal predecessors, (47), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-13 00:07:13,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:07:13,117 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2024-09-13 00:07:13,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 00:07:13,118 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 19 states have internal predecessors, (47), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) Word has length 52 [2024-09-13 00:07:13,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:07:13,119 INFO L225 Difference]: With dead ends: 69 [2024-09-13 00:07:13,119 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 00:07:13,120 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2024-09-13 00:07:13,120 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 37 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 00:07:13,121 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 213 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 00:07:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 00:07:13,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 00:07:13,122 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) [2024-09-13 00:07:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 00:07:13,122 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2024-09-13 00:07:13,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:07:13,122 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 00:07:13,123 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 19 states have internal predecessors, (47), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-13 00:07:13,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:07:13,123 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 00:07:13,123 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 00:07:13,125 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 00:07:13,134 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 00:07:13,329 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:07:13,333 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-09-13 00:07:13,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 00:07:18,105 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 00:07:18,128 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-13 00:07:18,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 12:07:18 BoogieIcfgContainer [2024-09-13 00:07:18,137 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 00:07:18,137 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 00:07:18,137 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 00:07:18,138 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 00:07:18,138 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 12:06:36" (3/4) ... [2024-09-13 00:07:18,140 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 00:07:18,143 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 00:07:18,144 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-13 00:07:18,144 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 00:07:18,146 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-13 00:07:18,149 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-09-13 00:07:18,152 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-09-13 00:07:18,152 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-13 00:07:18,152 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 00:07:18,268 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 00:07:18,269 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 00:07:18,269 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 00:07:18,270 INFO L158 Benchmark]: Toolchain (without parser) took 42212.83ms. Allocated memory was 146.8MB in the beginning and 218.1MB in the end (delta: 71.3MB). Free memory was 93.4MB in the beginning and 188.0MB in the end (delta: -94.6MB). Peak memory consumption was 104.4MB. Max. memory is 16.1GB. [2024-09-13 00:07:18,270 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 146.8MB. Free memory is still 107.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 00:07:18,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.10ms. Allocated memory is still 146.8MB. Free memory was 93.2MB in the beginning and 81.6MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 00:07:18,271 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.72ms. Allocated memory is still 146.8MB. Free memory was 81.3MB in the beginning and 80.3MB in the end (delta: 966.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 00:07:18,271 INFO L158 Benchmark]: Boogie Preprocessor took 33.55ms. Allocated memory is still 146.8MB. Free memory was 80.3MB in the beginning and 78.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 00:07:18,271 INFO L158 Benchmark]: RCFGBuilder took 296.40ms. Allocated memory is still 146.8MB. Free memory was 78.6MB in the beginning and 65.6MB in the end (delta: 12.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 00:07:18,271 INFO L158 Benchmark]: TraceAbstraction took 41487.97ms. Allocated memory was 146.8MB in the beginning and 218.1MB in the end (delta: 71.3MB). Free memory was 65.3MB in the beginning and 68.6MB in the end (delta: -3.3MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. [2024-09-13 00:07:18,272 INFO L158 Benchmark]: Witness Printer took 132.10ms. Allocated memory is still 218.1MB. Free memory was 67.5MB in the beginning and 188.0MB in the end (delta: -120.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 00:07:18,273 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 146.8MB. Free memory is still 107.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.10ms. Allocated memory is still 146.8MB. Free memory was 93.2MB in the beginning and 81.6MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.72ms. Allocated memory is still 146.8MB. Free memory was 81.3MB in the beginning and 80.3MB in the end (delta: 966.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.55ms. Allocated memory is still 146.8MB. Free memory was 80.3MB in the beginning and 78.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 296.40ms. Allocated memory is still 146.8MB. Free memory was 78.6MB in the beginning and 65.6MB in the end (delta: 12.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 41487.97ms. Allocated memory was 146.8MB in the beginning and 218.1MB in the end (delta: 71.3MB). Free memory was 65.3MB in the beginning and 68.6MB in the end (delta: -3.3MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. * Witness Printer took 132.10ms. Allocated memory is still 218.1MB. Free memory was 67.5MB in the beginning and 188.0MB in the end (delta: -120.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 21]: 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 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.6s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 653 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 491 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 416 IncrementalHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 162 mSDtfsCounter, 416 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 286 SyntacticMatches, 7 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 29.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=5, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 32.6s InterpolantComputationTime, 407 NumberOfCodeBlocks, 407 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 405 ConstructedInterpolants, 4 QuantifiedInterpolants, 2519 SizeOfPredicates, 9 NumberOfNonLiveVariables, 392 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 255/308 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: 37]: Loop Invariant Derived loop invariant: ((((((((B % 4294967296) == 1) && ((r % 4294967296) == (A % 4294967296))) && (0 <= ((2 * ((((-2147483648 * (b / 4294967296)) + (b / 2)) + ((long long) -1 * B)) / 4294967296)) + (b / 4294967296)))) && ((A % 4294967296) <= 1)) && (b <= ((long long) B * 2))) && (q == 0)) || (((((((B % 4294967296) == 1) && ((r % 4294967296) == (A % 4294967296))) && (((A / 4294967296) + (b / 4294967296)) <= ((r / 4294967296) + (B / 4294967296)))) && ((A % 4294967296) <= 1)) && (B == b)) && (q == 0))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((((((B % 4294967296) == 1) && (b == 1)) && ((r % 4294967296) <= 0)) && ((r % 4294967296) == (A % 4294967296))) && (q == 0)) || (((((((B % 4294967296) == 1) && ((r % 4294967296) == (A % 4294967296))) && (0 <= ((2 * ((((-2147483648 * (b / 4294967296)) + (b / 2)) + ((long long) -1 * B)) / 4294967296)) + (b / 4294967296)))) && ((A % 4294967296) <= 1)) && (b <= ((long long) B * 2))) && (q == 0))) || ((((((B % 4294967296) == 1) && (b == 1)) && ((r % 4294967296) <= 0)) && ((A % 4294967296) == (((long long) r + 1) % 4294967296))) && (q == 1))) || (((((b + ((B / 4294967296) * 4294967296)) == (B + ((b / 4294967296) * 4294967296))) && ((B / 4294967296) <= (b / 4294967296))) && (((A / 4294967296) + (b / 4294967296)) <= ((r / 4294967296) + (B / 4294967296)))) && ((A % 4294967296) == ((r + ((unsigned long long) b * q)) % 4294967296)))) - ProcedureContractResult [Line: 15]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 18]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-13 00:07:18,338 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