./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound20.c --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/nla-digbench-scaling/ps5-ll_valuebound20.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7921702b8cbecd5225031321150d70ea7b40d7d08ee6ac9909ff47d4f7b99139 --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 [2024-09-17 19:14:36,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:14:36,465 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:14:36,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:14:36,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:14:36,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:14:36,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:14:36,490 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:14:36,490 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:14:36,491 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:14:36,491 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:14:36,491 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:14:36,492 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:14:36,492 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:14:36,492 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:14:36,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:14:36,493 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:14:36,493 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:14:36,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:14:36,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:14:36,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:14:36,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:14:36,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:14:36,497 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:14:36,497 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:14:36,498 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:14:36,498 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:14:36,498 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:14:36,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:14:36,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:14:36,499 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:14:36,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:14:36,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:14:36,500 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:14:36,500 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:14:36,500 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:14:36,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:14:36,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:14:36,501 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:14:36,501 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:14:36,501 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:14:36,502 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:14:36,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7921702b8cbecd5225031321150d70ea7b40d7d08ee6ac9909ff47d4f7b99139 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 19:14:36,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:14:36,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:14:36,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:14:36,769 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:14:36,769 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:14:36,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound20.c [2024-09-17 19:14:38,176 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:14:38,357 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:14:38,357 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound20.c [2024-09-17 19:14:38,364 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/781fe4810/c30e48a66f3d40da83cdb948e05b160a/FLAG0ff6790ce [2024-09-17 19:14:38,754 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/781fe4810/c30e48a66f3d40da83cdb948e05b160a [2024-09-17 19:14:38,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:14:38,758 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 19:14:38,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:14:38,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:14:38,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:14:38,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:14:38" (1/1) ... [2024-09-17 19:14:38,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790007db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38, skipping insertion in model container [2024-09-17 19:14:38,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:14:38" (1/1) ... [2024-09-17 19:14:38,780 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:14:38,937 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/nla-digbench-scaling/ps5-ll_valuebound20.c[458,471] [2024-09-17 19:14:38,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:14:38,961 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 19:14:38,973 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/nla-digbench-scaling/ps5-ll_valuebound20.c[458,471] [2024-09-17 19:14:38,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:14:38,996 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:14:38,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38 WrapperNode [2024-09-17 19:14:38,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:14:38,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:14:38,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:14:38,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:14:39,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38" (1/1) ... [2024-09-17 19:14:39,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38" (1/1) ... [2024-09-17 19:14:39,023 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 19:14:39,024 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:14:39,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:14:39,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:14:39,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:14:39,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38" (1/1) ... [2024-09-17 19:14:39,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38" (1/1) ... [2024-09-17 19:14:39,039 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38" (1/1) ... [2024-09-17 19:14:39,056 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]. [2024-09-17 19:14:39,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38" (1/1) ... [2024-09-17 19:14:39,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38" (1/1) ... [2024-09-17 19:14:39,060 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38" (1/1) ... [2024-09-17 19:14:39,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38" (1/1) ... [2024-09-17 19:14:39,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38" (1/1) ... [2024-09-17 19:14:39,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38" (1/1) ... [2024-09-17 19:14:39,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:14:39,073 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:14:39,073 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:14:39,073 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:14:39,074 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38" (1/1) ... [2024-09-17 19:14:39,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:14:39,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:14:39,114 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) [2024-09-17 19:14:39,117 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 [2024-09-17 19:14:39,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:14:39,160 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 19:14:39,161 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 19:14:39,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 19:14:39,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 19:14:39,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 19:14:39,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 19:14:39,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 19:14:39,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:14:39,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:14:39,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 19:14:39,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 19:14:39,215 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:14:39,217 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:14:39,365 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-17 19:14:39,366 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:14:39,393 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:14:39,393 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-17 19:14:39,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:14:39 BoogieIcfgContainer [2024-09-17 19:14:39,394 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:14:39,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:14:39,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:14:39,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:14:39,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:14:38" (1/3) ... [2024-09-17 19:14:39,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ba4b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:14:39, skipping insertion in model container [2024-09-17 19:14:39,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:38" (2/3) ... [2024-09-17 19:14:39,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ba4b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:14:39, skipping insertion in model container [2024-09-17 19:14:39,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:14:39" (3/3) ... [2024-09-17 19:14:39,404 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound20.c [2024-09-17 19:14:39,417 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:14:39,417 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 19:14:39,466 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:14:39,471 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;@f067409, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:14:39,471 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 19:14:39,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-17 19:14:39,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-17 19:14:39,482 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:14:39,483 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:14:39,483 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:14:39,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:39,488 INFO L85 PathProgramCache]: Analyzing trace with hash -620791457, now seen corresponding path program 1 times [2024-09-17 19:14:39,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:14:39,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444908192] [2024-09-17 19:14:39,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:39,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:14:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:39,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:14:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:39,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:14:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:39,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:14:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:14:39,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:14:39,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444908192] [2024-09-17 19:14:39,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444908192] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:14:39,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:14:39,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 19:14:39,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733426952] [2024-09-17 19:14:39,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:14:39,654 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 19:14:39,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:14:39,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 19:14:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 19:14:39,676 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 19:14:39,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:14:39,702 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-09-17 19:14:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 19:14:39,704 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-17 19:14:39,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:14:39,710 INFO L225 Difference]: With dead ends: 48 [2024-09-17 19:14:39,710 INFO L226 Difference]: Without dead ends: 23 [2024-09-17 19:14:39,712 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 19:14:39,716 INFO L434 NwaCegarLoop]: 28 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, 28 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 [2024-09-17 19:14:39,716 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:14:39,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-17 19:14:39,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-17 19:14:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-17 19:14:39,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-17 19:14:39,748 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2024-09-17 19:14:39,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:14:39,749 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-17 19:14:39,749 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 19:14:39,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:39,751 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-17 19:14:39,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-17 19:14:39,752 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:14:39,752 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:14:39,753 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:14:39,753 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:14:39,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:39,753 INFO L85 PathProgramCache]: Analyzing trace with hash -959298087, now seen corresponding path program 1 times [2024-09-17 19:14:39,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:14:39,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086360407] [2024-09-17 19:14:39,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:39,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:14:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:14:39,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808357460] [2024-09-17 19:14:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:39,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:39,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:14:39,788 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) [2024-09-17 19:14:39,793 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 19:14:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:39,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 19:14:39,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:14:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:14:39,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:14:39,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:14:39,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086360407] [2024-09-17 19:14:39,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:14:39,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808357460] [2024-09-17 19:14:39,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808357460] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:14:39,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:14:39,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:14:39,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898719476] [2024-09-17 19:14:39,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:14:39,997 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:14:39,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:14:39,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:14:39,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:14:39,998 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-17 19:14:40,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:14:40,062 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-17 19:14:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:14:40,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-17 19:14:40,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:14:40,064 INFO L225 Difference]: With dead ends: 34 [2024-09-17 19:14:40,064 INFO L226 Difference]: Without dead ends: 30 [2024-09-17 19:14:40,065 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:14:40,067 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:14:40,067 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:14:40,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-17 19:14:40,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-17 19:14:40,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 19:14:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-17 19:14:40,083 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2024-09-17 19:14:40,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:14:40,084 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-17 19:14:40,084 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-17 19:14:40,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:40,085 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-17 19:14:40,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-17 19:14:40,085 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:14:40,086 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:14:40,104 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-17 19:14:40,286 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 [2024-09-17 19:14:40,286 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:14:40,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:40,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1544704875, now seen corresponding path program 1 times [2024-09-17 19:14:40,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:14:40,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309883199] [2024-09-17 19:14:40,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:40,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:14:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:14:40,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042743708] [2024-09-17 19:14:40,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:40,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:40,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:14:40,337 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) [2024-09-17 19:14:40,341 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 19:14:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:40,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-17 19:14:40,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:14:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:14:40,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:14:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-17 19:14:40,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:14:40,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309883199] [2024-09-17 19:14:40,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:14:40,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042743708] [2024-09-17 19:14:40,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042743708] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-17 19:14:40,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 19:14:40,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-17 19:14:40,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669395566] [2024-09-17 19:14:40,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:14:40,607 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:14:40,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:14:40,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:14:40,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-17 19:14:40,608 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 19:14:40,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:14:40,658 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-09-17 19:14:40,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:14:40,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-17 19:14:40,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:14:40,660 INFO L225 Difference]: With dead ends: 36 [2024-09-17 19:14:40,661 INFO L226 Difference]: Without dead ends: 32 [2024-09-17 19:14:40,661 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-17 19:14:40,662 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:14:40,664 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:14:40,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-17 19:14:40,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-17 19:14:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 19:14:40,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-09-17 19:14:40,682 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2024-09-17 19:14:40,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:14:40,683 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-09-17 19:14:40,684 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 19:14:40,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:40,684 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-09-17 19:14:40,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-17 19:14:40,686 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:14:40,686 INFO L216 NwaCegarLoop]: trace histogram [4, 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] [2024-09-17 19:14:40,702 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-17 19:14:40,890 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 [2024-09-17 19:14:40,891 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:14:40,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash 21814286, now seen corresponding path program 1 times [2024-09-17 19:14:40,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:14:40,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517545970] [2024-09-17 19:14:40,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:40,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:14:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:14:40,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715953731] [2024-09-17 19:14:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:40,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:40,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:14:40,921 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) [2024-09-17 19:14:40,924 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 19:14:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:40,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-17 19:14:40,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:14:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-17 19:14:41,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:14:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-17 19:14:41,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:14:41,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517545970] [2024-09-17 19:14:41,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:14:41,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715953731] [2024-09-17 19:14:41,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715953731] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:14:41,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:14:41,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-17 19:14:41,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380468965] [2024-09-17 19:14:41,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:14:41,196 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-17 19:14:41,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:14:41,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-17 19:14:41,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-17 19:14:41,198 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-17 19:14:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:14:41,324 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2024-09-17 19:14:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-17 19:14:41,325 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-09-17 19:14:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:14:41,326 INFO L225 Difference]: With dead ends: 49 [2024-09-17 19:14:41,327 INFO L226 Difference]: Without dead ends: 41 [2024-09-17 19:14:41,328 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-09-17 19:14:41,329 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:14:41,330 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 135 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:14:41,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-17 19:14:41,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-17 19:14:41,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-17 19:14:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-09-17 19:14:41,357 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 39 [2024-09-17 19:14:41,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:14:41,358 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-09-17 19:14:41,358 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-17 19:14:41,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:41,359 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-09-17 19:14:41,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-17 19:14:41,361 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:14:41,361 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:14:41,373 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-17 19:14:41,562 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:41,562 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:14:41,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:41,563 INFO L85 PathProgramCache]: Analyzing trace with hash -244405920, now seen corresponding path program 2 times [2024-09-17 19:14:41,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:14:41,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994249688] [2024-09-17 19:14:41,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:41,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:14:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:14:41,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094726757] [2024-09-17 19:14:41,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:14:41,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:41,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:14:41,642 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) [2024-09-17 19:14:41,644 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 19:14:41,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:14:41,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:14:41,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-17 19:14:41,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:14:41,979 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 46 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-17 19:14:41,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:14:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 46 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-17 19:14:42,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:14:42,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994249688] [2024-09-17 19:14:42,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:14:42,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094726757] [2024-09-17 19:14:42,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094726757] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:14:42,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:14:42,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-09-17 19:14:42,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288697507] [2024-09-17 19:14:42,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:14:42,411 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-17 19:14:42,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:14:42,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-17 19:14:42,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-09-17 19:14:42,414 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2024-09-17 19:14:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:14:42,783 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2024-09-17 19:14:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-17 19:14:42,784 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 60 [2024-09-17 19:14:42,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:14:42,785 INFO L225 Difference]: With dead ends: 46 [2024-09-17 19:14:42,785 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 19:14:42,786 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-09-17 19:14:42,786 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:14:42,787 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 350 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:14:42,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 19:14:42,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 19:14:42,788 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) [2024-09-17 19:14:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 19:14:42,788 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2024-09-17 19:14:42,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:14:42,788 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 19:14:42,789 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2024-09-17 19:14:42,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 19:14:42,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 19:14:42,791 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-17 19:14:42,809 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-17 19:14:42,992 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:42,997 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-09-17 19:14:42,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-17 19:14:43,564 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 19:14:43,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 07:14:43 BoogieIcfgContainer [2024-09-17 19:14:43,587 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 19:14:43,588 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-17 19:14:43,588 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-17 19:14:43,588 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-17 19:14:43,589 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:14:39" (3/4) ... [2024-09-17 19:14:43,590 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-17 19:14:43,638 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-17 19:14:43,638 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-17 19:14:43,639 INFO L158 Benchmark]: Toolchain (without parser) took 4881.17ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 155.0MB in the beginning and 159.6MB in the end (delta: -4.6MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2024-09-17 19:14:43,639 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 121.6MB. Free memory was 81.8MB in the beginning and 81.7MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:14:43,639 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.65ms. Allocated memory is still 184.5MB. Free memory was 155.0MB in the beginning and 142.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 19:14:43,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.63ms. Allocated memory is still 184.5MB. Free memory was 142.8MB in the beginning and 141.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:14:43,640 INFO L158 Benchmark]: Boogie Preprocessor took 44.54ms. Allocated memory is still 184.5MB. Free memory was 141.8MB in the beginning and 140.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:14:43,640 INFO L158 Benchmark]: RCFGBuilder took 321.69ms. Allocated memory is still 184.5MB. Free memory was 140.6MB in the beginning and 127.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 19:14:43,641 INFO L158 Benchmark]: TraceAbstraction took 4190.81ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 126.0MB in the beginning and 161.7MB in the end (delta: -35.7MB). Peak memory consumption was 68.1MB. Max. memory is 16.1GB. [2024-09-17 19:14:43,641 INFO L158 Benchmark]: Witness Printer took 50.39ms. Allocated memory is still 222.3MB. Free memory was 161.7MB in the beginning and 159.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:14:43,642 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 121.6MB. Free memory was 81.8MB in the beginning and 81.7MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.65ms. Allocated memory is still 184.5MB. Free memory was 155.0MB in the beginning and 142.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.63ms. Allocated memory is still 184.5MB. Free memory was 142.8MB in the beginning and 141.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.54ms. Allocated memory is still 184.5MB. Free memory was 141.8MB in the beginning and 140.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 321.69ms. Allocated memory is still 184.5MB. Free memory was 140.6MB in the beginning and 127.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4190.81ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 126.0MB in the beginning and 161.7MB in the end (delta: -35.7MB). Peak memory consumption was 68.1MB. Max. memory is 16.1GB. * Witness Printer took 50.39ms. Allocated memory is still 222.3MB. Free memory was 161.7MB in the beginning and 159.6MB 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: 12]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 663 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 544 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 339 IncrementalHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 119 mSDtfsCounter, 339 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 292 GetRequests, 241 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, InterpolantAutomatonStates: 36, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 1020 SizeOfPredicates, 7 NumberOfNonLiveVariables, 396 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 186/286 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: 28]: Loop Invariant Derived loop invariant: (((((c + ((__int128) c * y)) == (y + ((__int128) y * y))) && ((((__int128) c * 2) + ((__int128) c * y)) == (((__int128) y * 2) + ((__int128) y * y)))) && ((y + ((__int128) 30 * x)) == (((((((__int128) y * y) * y) * y) * 15) + (6 * (((((__int128) y * y) * y) * y) * y))) + ((((__int128) y * y) * y) * 10)))) && ((c < k) || (((__int128) y * y) == ((__int128) k * y)))) - ProcedureContractResult [Line: 9]: 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! [2024-09-17 19:14:43,660 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE