./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.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 a9fbcd5bc820bcc72ba138482dd1579d30a89debbfe581511878d5fb87d021a2 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-18 15:56:48,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 15:56:48,102 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 15:56:48,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 15:56:48,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 15:56:48,136 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 15:56:48,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 15:56:48,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 15:56:48,137 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 15:56:48,137 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 15:56:48,138 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 15:56:48,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 15:56:48,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 15:56:48,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 15:56:48,139 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 15:56:48,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 15:56:48,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 15:56:48,142 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 15:56:48,142 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 15:56:48,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 15:56:48,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 15:56:48,148 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 15:56:48,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 15:56:48,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 15:56:48,149 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 15:56:48,149 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 15:56:48,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 15:56:48,152 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 15:56:48,153 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 15:56:48,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 15:56:48,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 15:56:48,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 15:56:48,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:56:48,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 15:56:48,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 15:56:48,154 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 15:56:48,154 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 15:56:48,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 15:56:48,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 15:56:48,155 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 15:56:48,156 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 15:56:48,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 15:56:48,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9fbcd5bc820bcc72ba138482dd1579d30a89debbfe581511878d5fb87d021a2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 15:56:48,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 15:56:48,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 15:56:48,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 15:56:48,385 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 15:56:48,386 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 15:56:48,386 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.c [2024-09-18 15:56:49,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 15:56:49,774 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 15:56:49,775 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.c [2024-09-18 15:56:49,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/25ce96cdd/e1b7985be4e34af4a58957b2785aa05c/FLAG6cb280a09 [2024-09-18 15:56:49,794 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/25ce96cdd/e1b7985be4e34af4a58957b2785aa05c [2024-09-18 15:56:49,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 15:56:49,799 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 15:56:49,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 15:56:49,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 15:56:49,804 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 15:56:49,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:56:49" (1/1) ... [2024-09-18 15:56:49,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2147ebd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49, skipping insertion in model container [2024-09-18 15:56:49,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:56:49" (1/1) ... [2024-09-18 15:56:49,820 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 15:56:49,941 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/bresenham-ll_valuebound5.c[597,610] [2024-09-18 15:56:49,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:56:49,966 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 15:56:49,974 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/bresenham-ll_valuebound5.c[597,610] [2024-09-18 15:56:49,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:56:49,995 INFO L204 MainTranslator]: Completed translation [2024-09-18 15:56:49,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49 WrapperNode [2024-09-18 15:56:49,995 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 15:56:49,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 15:56:49,996 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 15:56:49,996 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 15:56:50,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49" (1/1) ... [2024-09-18 15:56:50,006 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49" (1/1) ... [2024-09-18 15:56:50,010 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 15:56:50,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 15:56:50,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 15:56:50,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 15:56:50,011 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 15:56:50,018 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49" (1/1) ... [2024-09-18 15:56:50,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49" (1/1) ... [2024-09-18 15:56:50,019 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49" (1/1) ... [2024-09-18 15:56:50,050 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-18 15:56:50,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49" (1/1) ... [2024-09-18 15:56:50,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49" (1/1) ... [2024-09-18 15:56:50,054 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49" (1/1) ... [2024-09-18 15:56:50,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49" (1/1) ... [2024-09-18 15:56:50,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49" (1/1) ... [2024-09-18 15:56:50,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49" (1/1) ... [2024-09-18 15:56:50,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 15:56:50,062 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 15:56:50,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 15:56:50,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 15:56:50,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49" (1/1) ... [2024-09-18 15:56:50,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:56:50,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:56:50,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-18 15:56:50,108 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-18 15:56:50,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 15:56:50,138 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-18 15:56:50,138 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-18 15:56:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 15:56:50,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 15:56:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 15:56:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 15:56:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 15:56:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 15:56:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 15:56:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-18 15:56:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-18 15:56:50,200 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 15:56:50,201 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 15:56:50,298 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-18 15:56:50,298 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 15:56:50,310 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 15:56:50,311 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-18 15:56:50,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:56:50 BoogieIcfgContainer [2024-09-18 15:56:50,311 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 15:56:50,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 15:56:50,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 15:56:50,315 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 15:56:50,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 03:56:49" (1/3) ... [2024-09-18 15:56:50,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54071911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:56:50, skipping insertion in model container [2024-09-18 15:56:50,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:56:49" (2/3) ... [2024-09-18 15:56:50,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54071911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:56:50, skipping insertion in model container [2024-09-18 15:56:50,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:56:50" (3/3) ... [2024-09-18 15:56:50,317 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound5.c [2024-09-18 15:56:50,327 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 15:56:50,328 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 15:56:50,364 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 15:56:50,368 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1ef0ec23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 15:56:50,368 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 15:56:50,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-18 15:56:50,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-18 15:56:50,376 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:56:50,376 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:56:50,376 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:56:50,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:56:50,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1345059158, now seen corresponding path program 1 times [2024-09-18 15:56:50,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:56:50,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387202492] [2024-09-18 15:56:50,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:56:50,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:56:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:50,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:56:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:50,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:56:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:50,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 15:56:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:50,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:56:50,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:56:50,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387202492] [2024-09-18 15:56:50,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387202492] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:56:50,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:56:50,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-18 15:56:50,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304183250] [2024-09-18 15:56:50,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:56:50,543 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-18 15:56:50,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:56:50,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-18 15:56:50,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 15:56:50,562 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 15:56:50,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:56:50,581 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2024-09-18 15:56:50,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-18 15:56:50,587 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-09-18 15:56:50,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:56:50,592 INFO L225 Difference]: With dead ends: 54 [2024-09-18 15:56:50,592 INFO L226 Difference]: Without dead ends: 26 [2024-09-18 15:56:50,595 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 15:56:50,598 INFO L434 NwaCegarLoop]: 31 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, 31 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:56:50,598 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:56:50,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-18 15:56:50,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-18 15:56:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-18 15:56:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-18 15:56:50,630 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 22 [2024-09-18 15:56:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:56:50,631 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-18 15:56:50,631 INFO L475 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 15:56:50,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:56:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-18 15:56:50,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-18 15:56:50,634 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:56:50,634 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:56:50,635 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 15:56:50,635 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:56:50,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:56:50,636 INFO L85 PathProgramCache]: Analyzing trace with hash 745253850, now seen corresponding path program 1 times [2024-09-18 15:56:50,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:56:50,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017387096] [2024-09-18 15:56:50,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:56:50,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:56:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:56:50,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747881330] [2024-09-18 15:56:50,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:56:50,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:56:50,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:56:50,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:56:50,683 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 15:56:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:50,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-18 15:56:50,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:56:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:56:50,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:56:50,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:56:50,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017387096] [2024-09-18 15:56:50,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:56:50,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747881330] [2024-09-18 15:56:50,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747881330] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:56:50,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:56:50,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-18 15:56:50,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919643040] [2024-09-18 15:56:50,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:56:50,851 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-18 15:56:50,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:56:50,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-18 15:56:50,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:56:50,854 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-18 15:56:50,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:56:50,953 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-09-18 15:56:50,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-18 15:56:50,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2024-09-18 15:56:50,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:56:50,955 INFO L225 Difference]: With dead ends: 38 [2024-09-18 15:56:50,955 INFO L226 Difference]: Without dead ends: 36 [2024-09-18 15:56:50,955 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-18 15:56:50,956 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:56:50,956 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 88 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:56:50,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-18 15:56:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2024-09-18 15:56:50,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-18 15:56:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-09-18 15:56:50,970 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2024-09-18 15:56:50,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:56:50,971 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-09-18 15:56:50,971 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-18 15:56:50,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:56:50,972 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-09-18 15:56:50,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-18 15:56:50,974 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:56:50,974 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:56:50,997 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-18 15:56:51,174 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:56:51,175 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:56:51,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:56:51,176 INFO L85 PathProgramCache]: Analyzing trace with hash -291852925, now seen corresponding path program 1 times [2024-09-18 15:56:51,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:56:51,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993608103] [2024-09-18 15:56:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:56:51,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:56:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:51,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:56:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:51,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:56:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:51,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 15:56:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:51,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-18 15:56:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-18 15:56:51,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:56:51,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993608103] [2024-09-18 15:56:51,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993608103] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:56:51,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653498132] [2024-09-18 15:56:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:56:51,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:56:51,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:56:51,361 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:56:51,362 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 15:56:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:51,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-18 15:56:51,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:56:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:56:51,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:56:51,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653498132] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:56:51,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-18 15:56:51,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-09-18 15:56:51,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112938445] [2024-09-18 15:56:51,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:56:51,506 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-18 15:56:51,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:56:51,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-18 15:56:51,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-09-18 15:56:51,509 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-18 15:56:51,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:56:51,574 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-09-18 15:56:51,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-18 15:56:51,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-09-18 15:56:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:56:51,575 INFO L225 Difference]: With dead ends: 42 [2024-09-18 15:56:51,576 INFO L226 Difference]: Without dead ends: 34 [2024-09-18 15:56:51,576 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-09-18 15:56:51,577 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:56:51,579 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:56:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-18 15:56:51,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-09-18 15:56:51,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-18 15:56:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-09-18 15:56:51,587 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2024-09-18 15:56:51,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:56:51,587 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-09-18 15:56:51,588 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-18 15:56:51,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:56:51,588 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-09-18 15:56:51,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-18 15:56:51,589 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:56:51,589 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:56:51,605 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-18 15:56:51,792 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:56:51,794 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:56:51,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:56:51,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1466394034, now seen corresponding path program 1 times [2024-09-18 15:56:51,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:56:51,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563898545] [2024-09-18 15:56:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:56:51,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:56:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:56:51,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831411826] [2024-09-18 15:56:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:56:51,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:56:51,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:56:51,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:56:51,838 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 15:56:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:51,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-18 15:56:51,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:56:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:56:52,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:56:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-18 15:56:52,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:56:52,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563898545] [2024-09-18 15:56:52,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:56:52,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831411826] [2024-09-18 15:56:52,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831411826] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:56:52,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:56:52,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2024-09-18 15:56:52,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833094206] [2024-09-18 15:56:52,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:56:52,128 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-18 15:56:52,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:56:52,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-18 15:56:52,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-18 15:56:52,129 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-18 15:56:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:56:52,277 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2024-09-18 15:56:52,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-18 15:56:52,278 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 31 [2024-09-18 15:56:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:56:52,279 INFO L225 Difference]: With dead ends: 47 [2024-09-18 15:56:52,279 INFO L226 Difference]: Without dead ends: 43 [2024-09-18 15:56:52,279 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-18 15:56:52,280 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:56:52,280 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 166 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:56:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-18 15:56:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2024-09-18 15:56:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-18 15:56:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2024-09-18 15:56:52,290 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2024-09-18 15:56:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:56:52,290 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-09-18 15:56:52,290 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-18 15:56:52,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:56:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2024-09-18 15:56:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-18 15:56:52,291 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:56:52,292 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:56:52,306 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-18 15:56:52,495 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:56:52,496 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:56:52,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:56:52,497 INFO L85 PathProgramCache]: Analyzing trace with hash 313414799, now seen corresponding path program 1 times [2024-09-18 15:56:52,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:56:52,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638152178] [2024-09-18 15:56:52,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:56:52,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:56:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:52,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:56:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:52,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:56:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:52,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 15:56:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:52,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-18 15:56:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:52,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-18 15:56:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-18 15:56:52,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:56:52,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638152178] [2024-09-18 15:56:52,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638152178] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:56:52,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486085548] [2024-09-18 15:56:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:56:52,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:56:52,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:56:52,694 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:56:52,695 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 15:56:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:56:52,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-18 15:56:52,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:56:53,067 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-18 15:56:53,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:56:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-18 15:56:53,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486085548] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:56:53,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:56:53,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 11] total 27 [2024-09-18 15:56:53,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231255224] [2024-09-18 15:56:53,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:56:53,580 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-18 15:56:53,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:56:53,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-18 15:56:53,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2024-09-18 15:56:53,582 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 27 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 10 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-18 15:56:55,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:56:55,104 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2024-09-18 15:56:55,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-18 15:56:55,105 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 10 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) Word has length 38 [2024-09-18 15:56:55,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:56:55,105 INFO L225 Difference]: With dead ends: 51 [2024-09-18 15:56:55,105 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 15:56:55,106 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=386, Invalid=1684, Unknown=0, NotChecked=0, Total=2070 [2024-09-18 15:56:55,107 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:56:55,107 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 193 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:56:55,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 15:56:55,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 15:56:55,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-18 15:56:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 15:56:55,108 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2024-09-18 15:56:55,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:56:55,108 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 15:56:55,108 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 10 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-18 15:56:55,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:56:55,109 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 15:56:55,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 15:56:55,111 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 15:56:55,126 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-18 15:56:55,314 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:56:55,317 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-18 15:56:55,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 15:56:55,944 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 15:56:55,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 03:56:55 BoogieIcfgContainer [2024-09-18 15:56:55,956 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 15:56:55,957 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 15:56:55,957 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 15:56:55,957 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 15:56:55,957 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:56:50" (3/4) ... [2024-09-18 15:56:55,958 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 15:56:55,996 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 15:56:55,996 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 15:56:55,997 INFO L158 Benchmark]: Toolchain (without parser) took 6197.30ms. Allocated memory was 184.5MB in the beginning and 266.3MB in the end (delta: 81.8MB). Free memory was 113.4MB in the beginning and 207.4MB in the end (delta: -94.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:56:55,997 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 184.5MB. Free memory is still 136.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:56:55,997 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.39ms. Allocated memory is still 184.5MB. Free memory was 113.2MB in the beginning and 101.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-18 15:56:55,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 14.77ms. Allocated memory is still 184.5MB. Free memory was 101.5MB in the beginning and 100.6MB in the end (delta: 957.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:56:55,997 INFO L158 Benchmark]: Boogie Preprocessor took 50.34ms. Allocated memory is still 184.5MB. Free memory was 100.6MB in the beginning and 153.6MB in the end (delta: -53.1MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2024-09-18 15:56:55,998 INFO L158 Benchmark]: RCFGBuilder took 249.15ms. Allocated memory is still 184.5MB. Free memory was 153.6MB in the beginning and 145.1MB in the end (delta: 8.5MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2024-09-18 15:56:55,998 INFO L158 Benchmark]: TraceAbstraction took 5643.65ms. Allocated memory was 184.5MB in the beginning and 266.3MB in the end (delta: 81.8MB). Free memory was 144.1MB in the beginning and 209.4MB in the end (delta: -65.4MB). Peak memory consumption was 148.7MB. Max. memory is 16.1GB. [2024-09-18 15:56:55,998 INFO L158 Benchmark]: Witness Printer took 39.62ms. Allocated memory is still 266.3MB. Free memory was 209.4MB in the beginning and 207.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:56:55,999 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 184.5MB. Free memory is still 136.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.39ms. Allocated memory is still 184.5MB. Free memory was 113.2MB in the beginning and 101.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 14.77ms. Allocated memory is still 184.5MB. Free memory was 101.5MB in the beginning and 100.6MB in the end (delta: 957.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.34ms. Allocated memory is still 184.5MB. Free memory was 100.6MB in the beginning and 153.6MB in the end (delta: -53.1MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * RCFGBuilder took 249.15ms. Allocated memory is still 184.5MB. Free memory was 153.6MB in the beginning and 145.1MB in the end (delta: 8.5MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * TraceAbstraction took 5643.65ms. Allocated memory was 184.5MB in the beginning and 266.3MB in the end (delta: 81.8MB). Free memory was 144.1MB in the beginning and 209.4MB in the end (delta: -65.4MB). Peak memory consumption was 148.7MB. Max. memory is 16.1GB. * Witness Printer took 39.62ms. Allocated memory is still 266.3MB. Free memory was 209.4MB in the beginning and 207.4MB 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: 16]: 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: 5.0s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 80 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 80 mSDsluCounter, 566 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 466 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 593 IncrementalHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 100 mSDtfsCounter, 593 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 181 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=4, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 269 ConstructedInterpolants, 3 QuantifiedInterpolants, 1063 SizeOfPredicates, 11 NumberOfNonLiveVariables, 342 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 64/81 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: 32]: Loop Invariant Derived loop invariant: ((((((x < ((long long) X + 1)) || (((__int128) y * x) == (((__int128) X * y) + y))) && ((((long long) Y * 2) + (2 * ((__int128) Y * x))) == (((((__int128) X * y) * 2) + X) + v))) && (0 <= Y)) && (0 <= X)) && (X <= 5)) - ProcedureContractResult [Line: 10]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-18 15:56:56,013 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