./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/bresenham-ll.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 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/bresenham-ll.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 68505a1040934ea3cdccf61a3fb1a3debf8c6c64330c175637d96b2737c92d5f --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 19:37:28,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:37:28,185 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:37:28,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:37:28,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:37:28,214 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:37:28,215 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:37:28,215 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:37:28,216 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:37:28,217 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:37:28,217 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:37:28,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:37:28,218 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:37:28,218 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:37:28,218 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:37:28,220 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:37:28,220 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:37:28,220 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:37:28,220 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:37:28,221 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:37:28,221 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:37:28,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:37:28,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:37:28,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:37:28,223 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:37:28,224 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:37:28,224 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:37:28,224 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:37:28,224 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:37:28,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:37:28,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:37:28,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:37:28,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:37:28,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:37:28,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:37:28,225 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:37:28,225 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:37:28,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:37:28,226 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:37:28,226 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:37:28,226 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:37:28,226 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:37:28,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68505a1040934ea3cdccf61a3fb1a3debf8c6c64330c175637d96b2737c92d5f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:37:28,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:37:28,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:37:28,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:37:28,451 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:37:28,452 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:37:28,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/bresenham-ll.c [2024-09-11 19:37:29,710 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:37:29,847 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:37:29,847 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/bresenham-ll.c [2024-09-11 19:37:29,853 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/5d72bfef3/3fcf68bf62034b06948b7cc4f397e9d2/FLAG754e7e376 [2024-09-11 19:37:29,864 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/5d72bfef3/3fcf68bf62034b06948b7cc4f397e9d2 [2024-09-11 19:37:29,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:37:29,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:37:29,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:37:29,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:37:29,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:37:29,874 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:37:29" (1/1) ... [2024-09-11 19:37:29,875 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689bc254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:29, skipping insertion in model container [2024-09-11 19:37:29,875 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:37:29" (1/1) ... [2024-09-11 19:37:29,890 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:37:30,030 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/bresenham-ll.c[597,610] [2024-09-11 19:37:30,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:37:30,056 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:37:30,066 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/bresenham-ll.c[597,610] [2024-09-11 19:37:30,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:37:30,089 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:37:30,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:30 WrapperNode [2024-09-11 19:37:30,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:37:30,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:37:30,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:37:30,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:37:30,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:30" (1/1) ... [2024-09-11 19:37:30,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:30" (1/1) ... [2024-09-11 19:37:30,112 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 50 [2024-09-11 19:37:30,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:37:30,113 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:37:30,113 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:37:30,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:37:30,120 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:30" (1/1) ... [2024-09-11 19:37:30,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:30" (1/1) ... [2024-09-11 19:37:30,121 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:30" (1/1) ... [2024-09-11 19:37:30,128 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]. [2024-09-11 19:37:30,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:30" (1/1) ... [2024-09-11 19:37:30,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:30" (1/1) ... [2024-09-11 19:37:30,130 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:30" (1/1) ... [2024-09-11 19:37:30,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:30" (1/1) ... [2024-09-11 19:37:30,134 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:30" (1/1) ... [2024-09-11 19:37:30,135 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:30" (1/1) ... [2024-09-11 19:37:30,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:37:30,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:37:30,136 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:37:30,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:37:30,137 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:30" (1/1) ... [2024-09-11 19:37:30,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:37:30,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:30,164 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) [2024-09-11 19:37:30,166 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 [2024-09-11 19:37:30,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:37:30,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:37:30,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:37:30,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:37:30,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-11 19:37:30,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-11 19:37:30,249 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:37:30,250 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:37:30,338 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-11 19:37:30,338 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:37:30,359 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:37:30,359 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-11 19:37:30,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:37:30 BoogieIcfgContainer [2024-09-11 19:37:30,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:37:30,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:37:30,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:37:30,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:37:30,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:37:29" (1/3) ... [2024-09-11 19:37:30,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61726681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:37:30, skipping insertion in model container [2024-09-11 19:37:30,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:37:30" (2/3) ... [2024-09-11 19:37:30,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61726681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:37:30, skipping insertion in model container [2024-09-11 19:37:30,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:37:30" (3/3) ... [2024-09-11 19:37:30,368 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll.c [2024-09-11 19:37:30,379 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:37:30,380 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:37:30,416 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:37:30,421 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;@617caed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:37:30,422 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:37:30,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-11 19:37:30,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-11 19:37:30,429 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:30,429 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-11 19:37:30,430 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:30,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1964472879, now seen corresponding path program 1 times [2024-09-11 19:37:30,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:30,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707467290] [2024-09-11 19:37:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:30,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:37:30,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711663325] [2024-09-11 19:37:30,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:30,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:30,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:30,530 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) [2024-09-11 19:37:30,535 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-11 19:37:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:30,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-11 19:37:30,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:30,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:37:30,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:37:30,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:30,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707467290] [2024-09-11 19:37:30,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:37:30,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711663325] [2024-09-11 19:37:30,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711663325] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:37:30,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:37:30,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 19:37:30,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252129860] [2024-09-11 19:37:30,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:37:30,755 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-11 19:37:30,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:30,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-11 19:37:30,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:37:30,774 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:37:30,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:30,883 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2024-09-11 19:37:30,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 19:37:30,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-09-11 19:37:30,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:30,890 INFO L225 Difference]: With dead ends: 42 [2024-09-11 19:37:30,891 INFO L226 Difference]: Without dead ends: 24 [2024-09-11 19:37:30,893 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:37:30,898 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 33 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 [2024-09-11 19:37:30,899 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 33 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:37:30,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-11 19:37:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2024-09-11 19:37:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-11 19:37:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-09-11 19:37:30,967 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 6 [2024-09-11 19:37:30,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:30,967 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-09-11 19:37:30,968 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 19:37:30,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-09-11 19:37:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-11 19:37:30,970 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:30,971 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:30,984 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-11 19:37:31,174 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-09-11 19:37:31,175 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:31,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:31,175 INFO L85 PathProgramCache]: Analyzing trace with hash 881939263, now seen corresponding path program 1 times [2024-09-11 19:37:31,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:31,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279602786] [2024-09-11 19:37:31,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:31,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:37:31,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028360437] [2024-09-11 19:37:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:31,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:31,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:31,203 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) [2024-09-11 19:37:31,204 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-11 19:37:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:31,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-11 19:37:31,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:37:31,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:37:31,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:31,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279602786] [2024-09-11 19:37:31,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:37:31,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028360437] [2024-09-11 19:37:31,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028360437] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:37:31,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:37:31,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-11 19:37:31,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088634776] [2024-09-11 19:37:31,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:37:31,333 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-11 19:37:31,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:31,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-11 19:37:31,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:37:31,335 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 19:37:31,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:31,411 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-09-11 19:37:31,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 19:37:31,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-11 19:37:31,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:31,412 INFO L225 Difference]: With dead ends: 30 [2024-09-11 19:37:31,412 INFO L226 Difference]: Without dead ends: 22 [2024-09-11 19:37:31,413 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:37:31,413 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:31,414 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:37:31,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-11 19:37:31,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-09-11 19:37:31,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-11 19:37:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-09-11 19:37:31,421 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 13 [2024-09-11 19:37:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:31,421 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-09-11 19:37:31,421 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 19:37:31,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-09-11 19:37:31,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-11 19:37:31,422 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:31,422 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:31,434 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-11 19:37:31,623 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:31,623 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:31,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:31,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1436156202, now seen corresponding path program 1 times [2024-09-11 19:37:31,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:31,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909077980] [2024-09-11 19:37:31,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:31,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:37:31,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664167347] [2024-09-11 19:37:31,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:31,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:31,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:31,643 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) [2024-09-11 19:37:31,645 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-11 19:37:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:31,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-11 19:37:31,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:37:31,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:31,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:37:31,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:31,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909077980] [2024-09-11 19:37:31,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:37:31,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664167347] [2024-09-11 19:37:31,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664167347] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:31,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-11 19:37:31,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2024-09-11 19:37:31,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538193332] [2024-09-11 19:37:31,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:31,892 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-11 19:37:31,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:31,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-11 19:37:31,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:37:31,893 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-11 19:37:32,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:32,060 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2024-09-11 19:37:32,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-11 19:37:32,072 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-09-11 19:37:32,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:32,073 INFO L225 Difference]: With dead ends: 35 [2024-09-11 19:37:32,073 INFO L226 Difference]: Without dead ends: 31 [2024-09-11 19:37:32,073 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:37:32,074 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:32,074 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 66 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:37:32,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-11 19:37:32,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2024-09-11 19:37:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-11 19:37:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-11 19:37:32,112 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2024-09-11 19:37:32,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:32,112 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-11 19:37:32,112 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-11 19:37:32,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:32,112 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-11 19:37:32,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-11 19:37:32,113 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:32,113 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:32,130 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-11 19:37:32,313 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-09-11 19:37:32,314 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:32,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:32,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2123895238, now seen corresponding path program 1 times [2024-09-11 19:37:32,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:32,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866527705] [2024-09-11 19:37:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:32,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:37:32,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091650988] [2024-09-11 19:37:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:32,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:32,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:32,348 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) [2024-09-11 19:37:32,350 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-11 19:37:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:32,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 19:37:32,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:37:32,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:32,673 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-11 19:37:32,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:32,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866527705] [2024-09-11 19:37:32,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:37:32,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091650988] [2024-09-11 19:37:32,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091650988] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:32,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-11 19:37:32,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2024-09-11 19:37:32,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704139183] [2024-09-11 19:37:32,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:32,675 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-11 19:37:32,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:32,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-11 19:37:32,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:37:32,678 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 14 states, 10 states have (on average 2.2) internal successors, (22), 13 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-11 19:37:32,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:32,850 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2024-09-11 19:37:32,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-11 19:37:32,850 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.2) internal successors, (22), 13 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2024-09-11 19:37:32,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:32,851 INFO L225 Difference]: With dead ends: 34 [2024-09-11 19:37:32,852 INFO L226 Difference]: Without dead ends: 28 [2024-09-11 19:37:32,853 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:37:32,853 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:32,856 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 35 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:37:32,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-11 19:37:32,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-09-11 19:37:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-11 19:37:32,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-09-11 19:37:32,869 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2024-09-11 19:37:32,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:32,869 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-09-11 19:37:32,869 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.2) internal successors, (22), 13 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-11 19:37:32,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:32,870 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-09-11 19:37:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-11 19:37:32,871 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:32,871 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:32,884 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-11 19:37:33,072 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:33,072 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:33,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:33,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1112777988, now seen corresponding path program 1 times [2024-09-11 19:37:33,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:33,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427190257] [2024-09-11 19:37:33,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:33,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:37:33,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772467951] [2024-09-11 19:37:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:33,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:33,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:33,092 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) [2024-09-11 19:37:33,097 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-11 19:37:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:33,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-11 19:37:33,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:37:33,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:37:33,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:33,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427190257] [2024-09-11 19:37:33,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:37:33,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772467951] [2024-09-11 19:37:33,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772467951] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:33,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-11 19:37:33,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2024-09-11 19:37:33,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835777406] [2024-09-11 19:37:33,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:33,790 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-11 19:37:33,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:33,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-11 19:37:33,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:37:33,791 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 22 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-11 19:37:35,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:35,005 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2024-09-11 19:37:35,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 19:37:35,005 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2024-09-11 19:37:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:35,006 INFO L225 Difference]: With dead ends: 51 [2024-09-11 19:37:35,006 INFO L226 Difference]: Without dead ends: 43 [2024-09-11 19:37:35,007 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2024-09-11 19:37:35,007 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:35,008 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-11 19:37:35,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-11 19:37:35,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2024-09-11 19:37:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-11 19:37:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2024-09-11 19:37:35,023 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 22 [2024-09-11 19:37:35,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:35,023 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2024-09-11 19:37:35,023 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-11 19:37:35,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:35,023 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2024-09-11 19:37:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-11 19:37:35,024 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:35,024 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:35,036 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-11 19:37:35,225 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:35,226 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:35,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:35,226 INFO L85 PathProgramCache]: Analyzing trace with hash 38910056, now seen corresponding path program 1 times [2024-09-11 19:37:35,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:35,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965533800] [2024-09-11 19:37:35,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:35,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:35,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 19:37:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:35,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-11 19:37:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:35,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-11 19:37:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:35,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 19:37:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:35,561 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:37:35,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:35,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965533800] [2024-09-11 19:37:35,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965533800] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:35,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010901927] [2024-09-11 19:37:35,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:35,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:35,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:35,564 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) [2024-09-11 19:37:35,566 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-11 19:37:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:35,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-11 19:37:35,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:37:35,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:35,882 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:37:35,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010901927] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:35,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:35,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-09-11 19:37:35,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942112285] [2024-09-11 19:37:35,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:35,883 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-11 19:37:35,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:35,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-11 19:37:35,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:37:35,884 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-11 19:37:36,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:36,241 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2024-09-11 19:37:36,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-11 19:37:36,242 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 40 [2024-09-11 19:37:36,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:36,243 INFO L225 Difference]: With dead ends: 75 [2024-09-11 19:37:36,243 INFO L226 Difference]: Without dead ends: 69 [2024-09-11 19:37:36,243 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2024-09-11 19:37:36,244 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:36,244 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 114 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:37:36,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-11 19:37:36,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 48. [2024-09-11 19:37:36,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-11 19:37:36,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2024-09-11 19:37:36,274 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 40 [2024-09-11 19:37:36,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:36,275 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2024-09-11 19:37:36,275 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-11 19:37:36,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:36,275 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2024-09-11 19:37:36,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-11 19:37:36,276 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:36,276 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:36,288 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-11 19:37:36,476 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:36,477 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:36,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:36,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2119108004, now seen corresponding path program 2 times [2024-09-11 19:37:36,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:36,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893972496] [2024-09-11 19:37:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:36,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:36,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 19:37:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:36,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-11 19:37:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:36,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-11 19:37:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:36,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 19:37:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:37:36,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:36,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893972496] [2024-09-11 19:37:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893972496] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:36,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945501109] [2024-09-11 19:37:36,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:37:36,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:36,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:36,554 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:36,555 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-11 19:37:36,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:37:36,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:36,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-11 19:37:36,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 19:37:36,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:37:36,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945501109] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:36,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:36,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-09-11 19:37:36,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347127172] [2024-09-11 19:37:36,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:36,667 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-11 19:37:36,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:36,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-11 19:37:36,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:37:36,667 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-11 19:37:36,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:36,748 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2024-09-11 19:37:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 19:37:36,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 40 [2024-09-11 19:37:36,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:36,749 INFO L225 Difference]: With dead ends: 88 [2024-09-11 19:37:36,749 INFO L226 Difference]: Without dead ends: 69 [2024-09-11 19:37:36,750 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:37:36,750 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:36,750 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 54 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:37:36,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-11 19:37:36,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2024-09-11 19:37:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 52 states have internal predecessors, (62), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-11 19:37:36,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2024-09-11 19:37:36,794 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 40 [2024-09-11 19:37:36,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:36,795 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2024-09-11 19:37:36,795 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-11 19:37:36,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:36,796 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2024-09-11 19:37:36,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-11 19:37:36,797 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:37:36,797 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:37:36,810 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-11 19:37:36,997 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:36,998 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:37:36,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:36,998 INFO L85 PathProgramCache]: Analyzing trace with hash 313669670, now seen corresponding path program 3 times [2024-09-11 19:37:36,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:37:36,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67636007] [2024-09-11 19:37:36,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:37:36,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:37:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:37,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 19:37:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:37,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-11 19:37:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:37,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-11 19:37:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:37,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 19:37:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:37:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 19:37:37,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:37:37,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67636007] [2024-09-11 19:37:37,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67636007] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:37:37,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261226842] [2024-09-11 19:37:37,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:37:37,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:37,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:37:37,190 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:37:37,191 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-11 19:37:37,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-11 19:37:37,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:37:37,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-11 19:37:37,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:37:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-11 19:37:37,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:37:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-11 19:37:38,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261226842] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:37:38,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:37:38,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 28 [2024-09-11 19:37:38,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203775137] [2024-09-11 19:37:38,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:37:38,188 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-11 19:37:38,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:37:38,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-11 19:37:38,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2024-09-11 19:37:38,190 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 28 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 25 states have internal predecessors, (47), 10 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-11 19:37:44,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:37:44,675 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2024-09-11 19:37:44,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-11 19:37:44,675 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 25 states have internal predecessors, (47), 10 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 40 [2024-09-11 19:37:44,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:37:44,676 INFO L225 Difference]: With dead ends: 83 [2024-09-11 19:37:44,676 INFO L226 Difference]: Without dead ends: 0 [2024-09-11 19:37:44,677 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=376, Invalid=2173, Unknown=1, NotChecked=0, Total=2550 [2024-09-11 19:37:44,677 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:37:44,677 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 137 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-11 19:37:44,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-11 19:37:44,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-11 19:37:44,678 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) [2024-09-11 19:37:44,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-11 19:37:44,678 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2024-09-11 19:37:44,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:37:44,678 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-11 19:37:44,678 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 25 states have internal predecessors, (47), 10 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-11 19:37:44,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:37:44,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-11 19:37:44,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-11 19:37:44,681 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-11 19:37:44,696 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-11 19:37:44,885 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:37:44,888 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2024-09-11 19:37:44,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-11 19:37:48,670 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-11 19:37:48,678 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-11 19:37:48,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 07:37:48 BoogieIcfgContainer [2024-09-11 19:37:48,683 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-11 19:37:48,684 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-11 19:37:48,684 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-11 19:37:48,684 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-11 19:37:48,684 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:37:30" (3/4) ... [2024-09-11 19:37:48,686 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-11 19:37:48,688 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-11 19:37:48,692 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-09-11 19:37:48,692 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-11 19:37:48,692 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-11 19:37:48,692 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-11 19:37:48,757 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-11 19:37:48,757 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-11 19:37:48,757 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-11 19:37:48,758 INFO L158 Benchmark]: Toolchain (without parser) took 18890.22ms. Allocated memory was 184.5MB in the beginning and 318.8MB in the end (delta: 134.2MB). Free memory was 115.5MB in the beginning and 228.0MB in the end (delta: -112.5MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2024-09-11 19:37:48,758 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory is still 144.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 19:37:48,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.48ms. Allocated memory is still 184.5MB. Free memory was 115.4MB in the beginning and 153.6MB in the end (delta: -38.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2024-09-11 19:37:48,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.73ms. Allocated memory is still 184.5MB. Free memory was 153.6MB in the beginning and 152.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-11 19:37:48,759 INFO L158 Benchmark]: Boogie Preprocessor took 22.57ms. Allocated memory is still 184.5MB. Free memory was 152.4MB in the beginning and 150.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-11 19:37:48,759 INFO L158 Benchmark]: RCFGBuilder took 223.38ms. Allocated memory is still 184.5MB. Free memory was 150.3MB in the beginning and 138.6MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-11 19:37:48,759 INFO L158 Benchmark]: TraceAbstraction took 18322.53ms. Allocated memory was 184.5MB in the beginning and 318.8MB in the end (delta: 134.2MB). Free memory was 137.7MB in the beginning and 232.2MB in the end (delta: -94.5MB). Peak memory consumption was 168.9MB. Max. memory is 16.1GB. [2024-09-11 19:37:48,759 INFO L158 Benchmark]: Witness Printer took 73.50ms. Allocated memory is still 318.8MB. Free memory was 232.2MB in the beginning and 228.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-11 19:37:48,760 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory is still 144.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.48ms. Allocated memory is still 184.5MB. Free memory was 115.4MB in the beginning and 153.6MB in the end (delta: -38.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.73ms. Allocated memory is still 184.5MB. Free memory was 153.6MB in the beginning and 152.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.57ms. Allocated memory is still 184.5MB. Free memory was 152.4MB in the beginning and 150.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 223.38ms. Allocated memory is still 184.5MB. Free memory was 150.3MB in the beginning and 138.6MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 18322.53ms. Allocated memory was 184.5MB in the beginning and 318.8MB in the end (delta: 134.2MB). Free memory was 137.7MB in the beginning and 232.2MB in the end (delta: -94.5MB). Peak memory consumption was 168.9MB. Max. memory is 16.1GB. * Witness Printer took 73.50ms. Allocated memory is still 318.8MB. Free memory was 232.2MB in the beginning and 228.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.5s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 527 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 459 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1439 IncrementalHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 68 mSDtfsCounter, 1439 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 465 GetRequests, 303 SyntacticMatches, 9 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=7, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 42 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 396 NumberOfCodeBlocks, 378 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 480 ConstructedInterpolants, 3 QuantifiedInterpolants, 2934 SizeOfPredicates, 26 NumberOfNonLiveVariables, 632 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 17 InterpolantComputations, 2 PerfectInterpolantSequences, 409/558 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: 30]: Loop Invariant Derived loop invariant: ((((((__int128) X * y) * 2) + X) + v) == ((((__int128) Y * x) * 2) + ((long long) 2 * Y))) - InvariantResult [Line: 48]: Location Invariant Derived location invariant: 1 - 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! [2024-09-11 19:37:48,785 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