./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.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 e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.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 d2bc2a3f53718ecf47344b6d9b2d76a5698712f748ff03cd831a90a334f72c9d --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 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 15:04:31,975 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 15:04:32,054 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 15:04:32,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 15:04:32,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 15:04:32,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 15:04:32,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 15:04:32,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 15:04:32,090 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 15:04:32,092 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 15:04:32,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 15:04:32,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 15:04:32,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 15:04:32,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 15:04:32,096 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 15:04:32,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 15:04:32,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 15:04:32,097 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 15:04:32,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 15:04:32,098 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 15:04:32,098 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 15:04:32,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 15:04:32,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 15:04:32,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 15:04:32,102 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 15:04:32,103 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 15:04:32,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 15:04:32,103 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 15:04:32,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 15:04:32,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 15:04:32,104 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 15:04:32,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 15:04:32,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:04:32,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 15:04:32,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 15:04:32,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 15:04:32,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 15:04:32,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 15:04:32,107 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 15:04:32,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 15:04:32,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 15:04:32,108 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 15:04:32,108 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2bc2a3f53718ecf47344b6d9b2d76a5698712f748ff03cd831a90a334f72c9d Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 15:04:32,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 15:04:32,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 15:04:32,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 15:04:32,394 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 15:04:32,394 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 15:04:32,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c [2024-10-15 15:04:33,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 15:04:34,011 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 15:04:34,012 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c [2024-10-15 15:04:34,023 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9767b2562/e333d00faf1b4ec3ba6dcb33486a2fca/FLAG2c315993a [2024-10-15 15:04:34,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9767b2562/e333d00faf1b4ec3ba6dcb33486a2fca [2024-10-15 15:04:34,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 15:04:34,398 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 15:04:34,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 15:04:34,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 15:04:34,406 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 15:04:34,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:04:34" (1/1) ... [2024-10-15 15:04:34,408 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@933aaf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34, skipping insertion in model container [2024-10-15 15:04:34,408 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:04:34" (1/1) ... [2024-10-15 15:04:34,428 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 15:04:34,582 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/prodbin-ll_valuebound2.c[537,550] [2024-10-15 15:04:34,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:04:34,603 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 15:04:34,614 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/prodbin-ll_valuebound2.c[537,550] [2024-10-15 15:04:34,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:04:34,633 INFO L204 MainTranslator]: Completed translation [2024-10-15 15:04:34,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34 WrapperNode [2024-10-15 15:04:34,634 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 15:04:34,635 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 15:04:34,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 15:04:34,636 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 15:04:34,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34" (1/1) ... [2024-10-15 15:04:34,648 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34" (1/1) ... [2024-10-15 15:04:34,653 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 15:04:34,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 15:04:34,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 15:04:34,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 15:04:34,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 15:04:34,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34" (1/1) ... [2024-10-15 15:04:34,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34" (1/1) ... [2024-10-15 15:04:34,663 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34" (1/1) ... [2024-10-15 15:04:34,674 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]. [2024-10-15 15:04:34,674 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34" (1/1) ... [2024-10-15 15:04:34,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34" (1/1) ... [2024-10-15 15:04:34,680 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34" (1/1) ... [2024-10-15 15:04:34,685 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34" (1/1) ... [2024-10-15 15:04:34,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34" (1/1) ... [2024-10-15 15:04:34,686 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34" (1/1) ... [2024-10-15 15:04:34,689 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 15:04:34,690 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 15:04:34,690 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 15:04:34,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 15:04:34,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34" (1/1) ... [2024-10-15 15:04:34,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:04:34,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:04:34,717 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) [2024-10-15 15:04:34,719 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 [2024-10-15 15:04:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 15:04:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-15 15:04:34,760 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-15 15:04:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 15:04:34,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 15:04:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 15:04:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 15:04:34,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 15:04:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 15:04:34,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 15:04:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-15 15:04:34,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-15 15:04:34,842 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 15:04:34,844 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 15:04:35,024 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-15 15:04:35,025 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 15:04:35,041 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 15:04:35,041 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-15 15:04:35,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:04:35 BoogieIcfgContainer [2024-10-15 15:04:35,041 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 15:04:35,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 15:04:35,043 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 15:04:35,046 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 15:04:35,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:04:34" (1/3) ... [2024-10-15 15:04:35,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be58121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:04:35, skipping insertion in model container [2024-10-15 15:04:35,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:34" (2/3) ... [2024-10-15 15:04:35,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be58121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:04:35, skipping insertion in model container [2024-10-15 15:04:35,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:04:35" (3/3) ... [2024-10-15 15:04:35,050 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound2.c [2024-10-15 15:04:35,062 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 15:04:35,062 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 15:04:35,102 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 15:04:35,107 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@30d3c17c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 15:04:35,108 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 15:04:35,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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) [2024-10-15 15:04:35,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-15 15:04:35,116 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:04:35,116 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:04:35,117 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:04:35,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:35,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2062108722, now seen corresponding path program 1 times [2024-10-15 15:04:35,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:04:35,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802445870] [2024-10-15 15:04:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:04:35,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:04:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:35,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:04:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:35,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:04:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:35,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-15 15:04:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:35,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 15:04:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 15:04:35,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:04:35,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802445870] [2024-10-15 15:04:35,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802445870] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:04:35,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:04:35,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 15:04:35,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528454876] [2024-10-15 15:04:35,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:04:35,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-15 15:04:35,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:04:35,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-15 15:04:35,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 15:04:35,302 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-15 15:04:35,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:04:35,324 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2024-10-15 15:04:35,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-15 15:04:35,326 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-10-15 15:04:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:04:35,332 INFO L225 Difference]: With dead ends: 54 [2024-10-15 15:04:35,332 INFO L226 Difference]: Without dead ends: 26 [2024-10-15 15:04:35,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 15:04:35,338 INFO L432 NwaCegarLoop]: 32 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, 32 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 [2024-10-15 15:04:35,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 15:04:35,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-15 15:04:35,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-15 15:04:35,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2024-10-15 15:04:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-10-15 15:04:35,369 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 27 [2024-10-15 15:04:35,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:04:35,370 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-10-15 15:04:35,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-15 15:04:35,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:35,371 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-10-15 15:04:35,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-15 15:04:35,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:04:35,372 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:04:35,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 15:04:35,373 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:04:35,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:35,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1085938704, now seen corresponding path program 1 times [2024-10-15 15:04:35,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:04:35,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393276222] [2024-10-15 15:04:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:04:35,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:04:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:04:35,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458971380] [2024-10-15 15:04:35,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:04:35,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:04:35,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:04:35,422 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) [2024-10-15 15:04:35,423 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 15:04:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:35,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-15 15:04:35,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:04:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 15:04:35,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:04:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 15:04:35,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:04:35,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393276222] [2024-10-15 15:04:35,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:04:35,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458971380] [2024-10-15 15:04:35,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458971380] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-15 15:04:35,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 15:04:35,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2024-10-15 15:04:35,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740510839] [2024-10-15 15:04:35,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:04:35,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:04:35,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:04:35,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:04:35,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-15 15:04:35,841 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-15 15:04:35,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:04:35,950 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-10-15 15:04:35,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:04:35,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2024-10-15 15:04:35,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:04:35,953 INFO L225 Difference]: With dead ends: 37 [2024-10-15 15:04:35,953 INFO L226 Difference]: Without dead ends: 35 [2024-10-15 15:04:35,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-15 15:04:35,955 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:04:35,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:04:35,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-10-15 15:04:35,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-10-15 15:04:35,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 15:04:35,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-10-15 15:04:35,969 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 27 [2024-10-15 15:04:35,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:04:35,971 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-10-15 15:04:35,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-15 15:04:35,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:35,972 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-10-15 15:04:35,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-15 15:04:35,973 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:04:35,973 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:04:35,985 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 15:04:36,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:04:36,174 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:04:36,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:36,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1368497365, now seen corresponding path program 1 times [2024-10-15 15:04:36,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:04:36,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119419569] [2024-10-15 15:04:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:04:36,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:04:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:36,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:04:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:36,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:04:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:36,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-15 15:04:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:36,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 15:04:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:36,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:04:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 15:04:36,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:04:36,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119419569] [2024-10-15 15:04:36,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119419569] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:04:36,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:04:36,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-15 15:04:36,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835486256] [2024-10-15 15:04:36,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:04:36,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 15:04:36,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:04:36,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 15:04:36,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-15 15:04:36,432 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 15:04:36,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:04:36,506 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-10-15 15:04:36,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 15:04:36,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-10-15 15:04:36,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:04:36,508 INFO L225 Difference]: With dead ends: 42 [2024-10-15 15:04:36,509 INFO L226 Difference]: Without dead ends: 35 [2024-10-15 15:04:36,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-15 15:04:36,512 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:04:36,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:04:36,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-10-15 15:04:36,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-10-15 15:04:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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) [2024-10-15 15:04:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-10-15 15:04:36,522 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2024-10-15 15:04:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:04:36,522 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-10-15 15:04:36,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 15:04:36,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-10-15 15:04:36,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-15 15:04:36,524 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:04:36,524 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:04:36,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-15 15:04:36,524 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:04:36,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash -65395240, now seen corresponding path program 1 times [2024-10-15 15:04:36,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:04:36,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002407279] [2024-10-15 15:04:36,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:04:36,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:04:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:04:36,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455302472] [2024-10-15 15:04:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:04:36,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:04:36,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:04:36,582 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) [2024-10-15 15:04:36,584 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 15:04:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:36,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-15 15:04:36,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:04:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 15:04:36,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:04:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 15:04:40,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:04:40,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002407279] [2024-10-15 15:04:40,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:04:40,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455302472] [2024-10-15 15:04:40,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455302472] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-15 15:04:40,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 15:04:40,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-10-15 15:04:40,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061866481] [2024-10-15 15:04:40,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:04:40,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-15 15:04:40,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:04:40,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-15 15:04:40,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-15 15:04:40,881 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 15:04:41,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:04:41,052 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2024-10-15 15:04:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 15:04:41,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-10-15 15:04:41,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:04:41,054 INFO L225 Difference]: With dead ends: 45 [2024-10-15 15:04:41,054 INFO L226 Difference]: Without dead ends: 43 [2024-10-15 15:04:41,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-15 15:04:41,056 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:04:41,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 117 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:04:41,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-15 15:04:41,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-10-15 15:04:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-15 15:04:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-10-15 15:04:41,065 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 36 [2024-10-15 15:04:41,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:04:41,066 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-10-15 15:04:41,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 15:04:41,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:41,067 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-10-15 15:04:41,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-15 15:04:41,067 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:04:41,068 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:04:41,085 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 15:04:41,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:04:41,269 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:04:41,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:41,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1709612122, now seen corresponding path program 1 times [2024-10-15 15:04:41,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:04:41,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384722946] [2024-10-15 15:04:41,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:04:41,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:04:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:04:41,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971504792] [2024-10-15 15:04:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:04:41,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:04:41,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:04:41,300 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) [2024-10-15 15:04:41,304 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 15:04:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:41,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-15 15:04:41,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:04:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 15:04:41,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:04:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 15:04:42,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:04:42,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384722946] [2024-10-15 15:04:42,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:04:42,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971504792] [2024-10-15 15:04:42,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971504792] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:04:42,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 15:04:42,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 19 [2024-10-15 15:04:42,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561661993] [2024-10-15 15:04:42,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 15:04:42,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 15:04:42,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:04:42,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 15:04:42,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-10-15 15:04:42,248 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 16 states have internal predecessors, (31), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-15 15:04:42,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:04:42,755 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-10-15 15:04:42,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-15 15:04:42,755 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 16 states have internal predecessors, (31), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 36 [2024-10-15 15:04:42,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:04:42,759 INFO L225 Difference]: With dead ends: 67 [2024-10-15 15:04:42,759 INFO L226 Difference]: Without dead ends: 60 [2024-10-15 15:04:42,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2024-10-15 15:04:42,761 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 15:04:42,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 146 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 15:04:42,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-15 15:04:42,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-15 15:04:42,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 43 states have internal predecessors, (50), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-15 15:04:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2024-10-15 15:04:42,787 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 36 [2024-10-15 15:04:42,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:04:42,787 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2024-10-15 15:04:42,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 16 states have internal predecessors, (31), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-15 15:04:42,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2024-10-15 15:04:42,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-15 15:04:42,792 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:04:42,792 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:04:42,811 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 15:04:42,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:04:42,996 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:04:42,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1894068381, now seen corresponding path program 1 times [2024-10-15 15:04:42,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:04:42,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352331253] [2024-10-15 15:04:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:04:42,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:04:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:04:43,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888878230] [2024-10-15 15:04:43,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:04:43,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:04:43,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:04:43,016 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) [2024-10-15 15:04:43,018 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 15:04:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:43,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 15:04:43,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:04:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-15 15:04:43,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:04:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-15 15:04:43,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:04:43,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352331253] [2024-10-15 15:04:43,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:04:43,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888878230] [2024-10-15 15:04:43,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888878230] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:04:43,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 15:04:43,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2024-10-15 15:04:43,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468645918] [2024-10-15 15:04:43,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 15:04:43,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 15:04:43,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:04:43,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 15:04:43,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-15 15:04:43,197 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-15 15:04:43,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:04:43,292 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-10-15 15:04:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 15:04:43,293 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 42 [2024-10-15 15:04:43,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:04:43,294 INFO L225 Difference]: With dead ends: 67 [2024-10-15 15:04:43,294 INFO L226 Difference]: Without dead ends: 60 [2024-10-15 15:04:43,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-15 15:04:43,295 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:04:43,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 142 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:04:43,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-15 15:04:43,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-10-15 15:04:43,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-15 15:04:43,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2024-10-15 15:04:43,313 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 42 [2024-10-15 15:04:43,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:04:43,314 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2024-10-15 15:04:43,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-15 15:04:43,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:43,314 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2024-10-15 15:04:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-15 15:04:43,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:04:43,315 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:04:43,331 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 15:04:43,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:04:43,520 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:04:43,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:43,520 INFO L85 PathProgramCache]: Analyzing trace with hash -455011438, now seen corresponding path program 1 times [2024-10-15 15:04:43,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:04:43,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234047494] [2024-10-15 15:04:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:04:43,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:04:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:43,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:04:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:43,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:04:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:43,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-15 15:04:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:43,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 15:04:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:43,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:04:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:43,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 15:04:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-15 15:04:43,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:04:43,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234047494] [2024-10-15 15:04:43,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234047494] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:04:43,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484076844] [2024-10-15 15:04:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:04:43,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:04:43,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:04:43,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:04:43,968 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 15:04:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:44,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-15 15:04:44,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:04:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-15 15:04:44,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:04:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-15 15:04:44,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484076844] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:04:44,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:04:44,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-10-15 15:04:44,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338080133] [2024-10-15 15:04:44,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:04:44,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 15:04:44,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:04:44,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 15:04:44,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-15 15:04:44,240 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-15 15:04:44,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:04:44,355 INFO L93 Difference]: Finished difference Result 89 states and 100 transitions. [2024-10-15 15:04:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 15:04:44,355 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 45 [2024-10-15 15:04:44,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:04:44,357 INFO L225 Difference]: With dead ends: 89 [2024-10-15 15:04:44,357 INFO L226 Difference]: Without dead ends: 50 [2024-10-15 15:04:44,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 95 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-10-15 15:04:44,358 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:04:44,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 136 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:04:44,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-15 15:04:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-15 15:04:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-15 15:04:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2024-10-15 15:04:44,373 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 45 [2024-10-15 15:04:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:04:44,373 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2024-10-15 15:04:44,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-15 15:04:44,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2024-10-15 15:04:44,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-15 15:04:44,374 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:04:44,374 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:04:44,394 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-15 15:04:44,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-15 15:04:44,575 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:04:44,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash 499200656, now seen corresponding path program 2 times [2024-10-15 15:04:44,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:04:44,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468699844] [2024-10-15 15:04:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:04:44,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:04:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:45,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:04:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:45,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:04:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:45,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-15 15:04:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:45,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 15:04:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:45,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:04:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:45,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 15:04:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:45,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 15:04:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:45,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 15:04:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:04:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 36 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-15 15:04:45,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:04:45,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468699844] [2024-10-15 15:04:45,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468699844] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:04:45,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874276711] [2024-10-15 15:04:45,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:04:45,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:04:45,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:04:45,068 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:04:45,069 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 15:04:45,119 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:04:45,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:04:45,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 15:04:45,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:04:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-15 15:04:45,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:04:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-15 15:04:45,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874276711] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:04:45,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:04:45,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2024-10-15 15:04:45,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696465667] [2024-10-15 15:04:45,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:04:45,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 15:04:45,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:04:45,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 15:04:45,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-10-15 15:04:45,516 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 16 states have internal predecessors, (51), 12 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2024-10-15 15:04:45,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:04:45,621 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2024-10-15 15:04:45,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 15:04:45,622 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 16 states have internal predecessors, (51), 12 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) Word has length 63 [2024-10-15 15:04:45,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:04:45,622 INFO L225 Difference]: With dead ends: 54 [2024-10-15 15:04:45,623 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 15:04:45,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2024-10-15 15:04:45,624 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:04:45,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 138 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:04:45,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 15:04:45,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 15:04:45,625 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) [2024-10-15 15:04:45,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 15:04:45,625 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2024-10-15 15:04:45,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:04:45,625 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 15:04:45,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 16 states have internal predecessors, (51), 12 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2024-10-15 15:04:45,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:04:45,626 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 15:04:45,626 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 15:04:45,628 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 15:04:45,645 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 15:04:45,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:04:45,832 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-10-15 15:04:45,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 15:04:46,411 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 15:04:46,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:04:46 BoogieIcfgContainer [2024-10-15 15:04:46,429 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 15:04:46,429 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 15:04:46,429 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 15:04:46,430 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 15:04:46,430 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:04:35" (3/4) ... [2024-10-15 15:04:46,431 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 15:04:46,482 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-10-15 15:04:46,483 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 15:04:46,483 INFO L158 Benchmark]: Toolchain (without parser) took 12085.15ms. Allocated memory was 182.5MB in the beginning and 255.9MB in the end (delta: 73.4MB). Free memory was 112.7MB in the beginning and 84.8MB in the end (delta: 27.9MB). Peak memory consumption was 101.8MB. Max. memory is 16.1GB. [2024-10-15 15:04:46,484 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 182.5MB. Free memory is still 138.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:04:46,484 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.41ms. Allocated memory is still 182.5MB. Free memory was 112.5MB in the beginning and 100.1MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 15:04:46,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.44ms. Allocated memory is still 182.5MB. Free memory was 100.1MB in the beginning and 99.2MB in the end (delta: 967.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:04:46,485 INFO L158 Benchmark]: Boogie Preprocessor took 35.10ms. Allocated memory is still 182.5MB. Free memory was 99.2MB in the beginning and 97.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:04:46,485 INFO L158 Benchmark]: RCFGBuilder took 351.55ms. Allocated memory is still 182.5MB. Free memory was 97.4MB in the beginning and 145.2MB in the end (delta: -47.8MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2024-10-15 15:04:46,486 INFO L158 Benchmark]: TraceAbstraction took 11385.76ms. Allocated memory was 182.5MB in the beginning and 255.9MB in the end (delta: 73.4MB). Free memory was 144.3MB in the beginning and 86.9MB in the end (delta: 57.4MB). Peak memory consumption was 132.7MB. Max. memory is 16.1GB. [2024-10-15 15:04:46,486 INFO L158 Benchmark]: Witness Printer took 53.44ms. Allocated memory is still 255.9MB. Free memory was 86.9MB in the beginning and 84.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:04:46,488 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 182.5MB. Free memory is still 138.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.41ms. Allocated memory is still 182.5MB. Free memory was 112.5MB in the beginning and 100.1MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.44ms. Allocated memory is still 182.5MB. Free memory was 100.1MB in the beginning and 99.2MB in the end (delta: 967.3kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.10ms. Allocated memory is still 182.5MB. Free memory was 99.2MB in the beginning and 97.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 351.55ms. Allocated memory is still 182.5MB. Free memory was 97.4MB in the beginning and 145.2MB in the end (delta: -47.8MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11385.76ms. Allocated memory was 182.5MB in the beginning and 255.9MB in the end (delta: 73.4MB). Free memory was 144.3MB in the beginning and 86.9MB in the end (delta: 57.4MB). Peak memory consumption was 132.7MB. Max. memory is 16.1GB. * Witness Printer took 53.44ms. Allocated memory is still 255.9MB. Free memory was 86.9MB in the beginning and 84.8MB 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: 15]: 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, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.7s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 878 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 703 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 644 IncrementalHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 175 mSDtfsCounter, 644 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 586 GetRequests, 479 SyntacticMatches, 16 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=5, InterpolantAutomatonStates: 63, 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, 8 MinimizatonAttempts, 7 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 558 NumberOfCodeBlocks, 558 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 650 ConstructedInterpolants, 2 QuantifiedInterpolants, 2119 SizeOfPredicates, 11 NumberOfNonLiveVariables, 620 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 454/493 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: 34]: Loop Invariant Derived loop invariant: ((((((z == ((long long) b * a)) && (b <= 2)) && (1 <= b)) && (y == 0)) || (((((z == 0) && (y <= 2)) && (b == y)) && (1 <= y)) && (a == x))) || (((((z == 0) && (y == 1)) && (((long long) a * 2) == x)) && (((b >= 0) ? (b / 2) : ((b / 2) - 1)) == 1)) && (((b >= 0) ? (b % 2) : ((b % 2) + 2)) != 1))) - ProcedureContractResult [Line: 9]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 12]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-10-15 15:04:46,510 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