./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/vnew2.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/loops-crafted-1/vnew2.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 6cb26fc448cefa547e2463448c16c0efba841bf620bbd2ba420ae15e288e3a3f --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 19:35:32,946 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:35:33,010 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:35:33,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:35:33,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:35:33,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:35:33,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:35:33,046 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:35:33,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:35:33,051 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:35:33,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:35:33,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:35:33,063 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:35:33,064 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:35:33,066 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:35:33,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:35:33,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:35:33,067 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:35:33,067 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:35:33,067 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:35:33,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:35:33,068 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:35:33,068 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:35:33,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:35:33,068 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:35:33,069 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:35:33,069 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:35:33,069 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:35:33,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:35:33,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:35:33,069 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:35:33,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:35:33,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:35:33,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:35:33,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:35:33,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:35:33,073 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:35:33,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:35:33,073 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:35:33,073 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:35:33,074 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:35:33,074 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:35:33,074 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cb26fc448cefa547e2463448c16c0efba841bf620bbd2ba420ae15e288e3a3f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:35:33,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:35:33,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:35:33,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:35:33,343 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:35:33,343 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:35:33,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/vnew2.c [2024-09-11 19:35:34,719 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:35:34,890 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:35:34,890 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/vnew2.c [2024-09-11 19:35:34,897 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/f4d8b65db/e0cd6eea1a3445a08c84f0eab18d7ff2/FLAG0783eaff2 [2024-09-11 19:35:34,913 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/f4d8b65db/e0cd6eea1a3445a08c84f0eab18d7ff2 [2024-09-11 19:35:34,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:35:34,918 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:35:34,919 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:35:34,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:35:34,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:35:34,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:35:34" (1/1) ... [2024-09-11 19:35:34,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d50aae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:34, skipping insertion in model container [2024-09-11 19:35:34,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:35:34" (1/1) ... [2024-09-11 19:35:34,944 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:35:35,093 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/loops-crafted-1/vnew2.c[403,416] [2024-09-11 19:35:35,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:35:35,114 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:35:35,126 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/loops-crafted-1/vnew2.c[403,416] [2024-09-11 19:35:35,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:35:35,149 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:35:35,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:35 WrapperNode [2024-09-11 19:35:35,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:35:35,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:35:35,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:35:35,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:35:35,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:35" (1/1) ... [2024-09-11 19:35:35,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:35" (1/1) ... [2024-09-11 19:35:35,187 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2024-09-11 19:35:35,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:35:35,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:35:35,188 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:35:35,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:35:35,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:35" (1/1) ... [2024-09-11 19:35:35,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:35" (1/1) ... [2024-09-11 19:35:35,197 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:35" (1/1) ... [2024-09-11 19:35:35,207 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-09-11 19:35:35,207 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:35" (1/1) ... [2024-09-11 19:35:35,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:35" (1/1) ... [2024-09-11 19:35:35,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:35" (1/1) ... [2024-09-11 19:35:35,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:35" (1/1) ... [2024-09-11 19:35:35,213 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:35" (1/1) ... [2024-09-11 19:35:35,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:35" (1/1) ... [2024-09-11 19:35:35,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:35:35,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:35:35,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:35:35,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:35:35,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:35" (1/1) ... [2024-09-11 19:35:35,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:35:35,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:35,250 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 19:35:35,260 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 19:35:35,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:35:35,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:35:35,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-11 19:35:35,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:35:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:35:35,367 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:35:35,369 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:35:35,506 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-09-11 19:35:35,510 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:35:35,541 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:35:35,544 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-11 19:35:35,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:35:35 BoogieIcfgContainer [2024-09-11 19:35:35,545 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:35:35,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:35:35,547 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:35:35,551 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:35:35,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:35:34" (1/3) ... [2024-09-11 19:35:35,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1642fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:35:35, skipping insertion in model container [2024-09-11 19:35:35,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:35" (2/3) ... [2024-09-11 19:35:35,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1642fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:35:35, skipping insertion in model container [2024-09-11 19:35:35,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:35:35" (3/3) ... [2024-09-11 19:35:35,555 INFO L112 eAbstractionObserver]: Analyzing ICFG vnew2.c [2024-09-11 19:35:35,571 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:35:35,571 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:35:35,635 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:35:35,643 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;@1c5bfeb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:35:35,643 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:35:35,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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 19:35:35,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-11 19:35:35,654 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:35,656 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-11 19:35:35,656 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:35,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:35,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2068321701, now seen corresponding path program 1 times [2024-09-11 19:35:35,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:35,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164645586] [2024-09-11 19:35:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:35,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:35,849 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 19:35:35,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164645586] [2024-09-11 19:35:35,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164645586] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:35:35,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:35:35,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:35:35,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456986783] [2024-09-11 19:35:35,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:35:35,855 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-11 19:35:35,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:35,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-11 19:35:35,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:35:35,874 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 19:35:35,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:35,897 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2024-09-11 19:35:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-11 19:35:35,899 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2024-09-11 19:35:35,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:35,905 INFO L225 Difference]: With dead ends: 19 [2024-09-11 19:35:35,905 INFO L226 Difference]: Without dead ends: 7 [2024-09-11 19:35:35,907 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:35:35,910 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:35,911 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:35:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2024-09-11 19:35:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2024-09-11 19:35:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 19:35:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2024-09-11 19:35:35,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 6 [2024-09-11 19:35:35,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:35,933 INFO L474 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2024-09-11 19:35:35,933 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 19:35:35,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2024-09-11 19:35:35,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-11 19:35:35,934 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:35,935 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-11 19:35:35,935 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:35:35,935 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:35,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:35,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2068202537, now seen corresponding path program 1 times [2024-09-11 19:35:35,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:35,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110463309] [2024-09-11 19:35:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:35,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:36,193 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 19:35:36,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:36,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110463309] [2024-09-11 19:35:36,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110463309] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:35:36,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:35:36,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-11 19:35:36,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187382520] [2024-09-11 19:35:36,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:35:36,196 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:35:36,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:35:36,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:35:36,197 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 19:35:36,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:36,232 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2024-09-11 19:35:36,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:35:36,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) Word has length 6 [2024-09-11 19:35:36,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:36,233 INFO L225 Difference]: With dead ends: 12 [2024-09-11 19:35:36,233 INFO L226 Difference]: Without dead ends: 8 [2024-09-11 19:35:36,234 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:35:36,235 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:36,235 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:35:36,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-09-11 19:35:36,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-09-11 19:35:36,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 19:35:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2024-09-11 19:35:36,240 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2024-09-11 19:35:36,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:36,240 INFO L474 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2024-09-11 19:35:36,240 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 19:35:36,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:36,241 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2024-09-11 19:35:36,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-11 19:35:36,241 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:36,241 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:36,242 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 19:35:36,242 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:36,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:36,243 INFO L85 PathProgramCache]: Analyzing trace with hash -308624997, now seen corresponding path program 1 times [2024-09-11 19:35:36,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:36,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69314810] [2024-09-11 19:35:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:36,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:35:36,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763647932] [2024-09-11 19:35:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:36,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:36,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:36,307 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 19:35:36,308 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 19:35:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:35:36,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-11 19:35:36,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:35:36,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:35:36,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:36,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69314810] [2024-09-11 19:35:36,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:35:36,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763647932] [2024-09-11 19:35:36,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763647932] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:36,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-11 19:35:36,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-09-11 19:35:36,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967535965] [2024-09-11 19:35:36,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:36,904 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-11 19:35:36,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:36,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-11 19:35:36,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:35:36,905 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 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 19:35:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:35:37,500 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2024-09-11 19:35:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-11 19:35:37,502 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 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) Word has length 7 [2024-09-11 19:35:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:35:37,503 INFO L225 Difference]: With dead ends: 17 [2024-09-11 19:35:37,503 INFO L226 Difference]: Without dead ends: 11 [2024-09-11 19:35:37,503 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:35:37,504 INFO L434 NwaCegarLoop]: 2 mSDtfsCounter, 29 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:35:37,505 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 9 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:35:37,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-09-11 19:35:37,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-09-11 19:35:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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 19:35:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2024-09-11 19:35:37,512 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2024-09-11 19:35:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:35:37,512 INFO L474 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2024-09-11 19:35:37,512 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 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 19:35:37,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2024-09-11 19:35:37,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-11 19:35:37,513 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:35:37,513 INFO L216 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2024-09-11 19:35:37,532 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-11 19:35:37,714 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:37,714 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:35:37,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:35:37,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1422716759, now seen corresponding path program 2 times [2024-09-11 19:35:37,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:35:37,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045935863] [2024-09-11 19:35:37,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:35:37,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:35:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:35:37,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376176308] [2024-09-11 19:35:37,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:35:37,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:35:37,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:35:37,788 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 19:35:37,790 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 19:35:37,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:35:37,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:35:37,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-11 19:35:37,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:35:38,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:35:38,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:35:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:35:38,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:35:38,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045935863] [2024-09-11 19:35:38,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:35:38,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376176308] [2024-09-11 19:35:38,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376176308] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:35:38,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-11 19:35:38,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-09-11 19:35:38,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854902306] [2024-09-11 19:35:38,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-11 19:35:38,823 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-11 19:35:38,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:35:38,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-11 19:35:38,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:35:38,825 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 17 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 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 19:35:59,568 WARN L293 SmtUtils]: Spent 11.79s on a formula simplification. DAG size of input: 90 DAG size of output: 55 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-11 19:36:04,373 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse0 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse6 (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse3 (mod (+ 2 c_~SIZE~0) 4294967296))) (and (or (< .cse0 (+ .cse1 1)) (let ((.cse2 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 3) 4294967296))) (and (= .cse2 (mod (+ 3 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (not (= (mod (mod .cse0 .cse3) 4294967296) 0)) (= .cse0 .cse2)))) (let ((.cse4 (mod (+ 9 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (or (let ((.cse5 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 9) 4294967296))) (and (= .cse4 .cse5) (not (= (mod (mod .cse4 .cse3) 4294967296) 0)) (= (mod (+ 9 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse5))) (< .cse4 (+ .cse6 1)))) (or (< .cse1 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296)) (let ((.cse7 (mod |c_ULTIMATE.start_main_~j~0#1| 4294967296))) (and (= .cse1 .cse7) (= .cse7 (mod |c_ULTIMATE.start_main_~k~0#1| 4294967296)) (not (= (mod (mod .cse1 .cse3) 4294967296) 0))))) (= 20000001 c_~SIZE~0) (or (< .cse6 (+ .cse0 1)) (let ((.cse8 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 6) 4294967296))) (and (= .cse8 (mod (+ 6 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (= .cse8 .cse6) (not (= (mod (mod .cse6 .cse3) 4294967296) 0))))))) is different from false [2024-09-11 19:36:09,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:36:09,171 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2024-09-11 19:36:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-11 19:36:09,172 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 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) Word has length 10 [2024-09-11 19:36:09,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:36:09,173 INFO L225 Difference]: With dead ends: 26 [2024-09-11 19:36:09,173 INFO L226 Difference]: Without dead ends: 17 [2024-09-11 19:36:09,174 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=151, Invalid=358, Unknown=1, NotChecked=42, Total=552 [2024-09-11 19:36:09,175 INFO L434 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:36:09,175 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 17 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 28 Unchecked, 2.2s Time] [2024-09-11 19:36:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-11 19:36:09,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-11 19:36:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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 19:36:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2024-09-11 19:36:09,190 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2024-09-11 19:36:09,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:36:09,191 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2024-09-11 19:36:09,192 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 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 19:36:09,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:09,193 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2024-09-11 19:36:09,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-11 19:36:09,194 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:36:09,194 INFO L216 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2024-09-11 19:36:09,211 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 19:36:09,397 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:09,398 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:36:09,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:36:09,398 INFO L85 PathProgramCache]: Analyzing trace with hash 654510953, now seen corresponding path program 3 times [2024-09-11 19:36:09,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:36:09,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880276826] [2024-09-11 19:36:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:36:09,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:36:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 19:36:09,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032393542] [2024-09-11 19:36:09,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:36:09,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:36:09,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:36:09,446 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 19:36:09,448 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 19:36:09,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-11 19:36:09,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:36:09,576 WARN L260 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-09-11 19:36:09,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:36:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:36:09,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:36:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:36:11,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:36:11,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880276826] [2024-09-11 19:36:11,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 19:36:11,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032393542] [2024-09-11 19:36:11,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032393542] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:36:11,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-11 19:36:11,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2024-09-11 19:36:11,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428354079] [2024-09-11 19:36:11,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-11 19:36:11,722 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-11 19:36:11,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:36:11,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-11 19:36:11,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:36:11,724 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 30 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 29 states have internal predecessors, (31), 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 19:39:50,017 WARN L293 SmtUtils]: Spent 3.14m on a formula simplification. DAG size of input: 196 DAG size of output: 113 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-11 19:39:54,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []