./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/trex03-2_abstracted.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 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/trex03-2_abstracted.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 25ec36157cae05963a6c18a739b5ec777339c87a162ad2e43daaca83e0e91f82 --procedureinliner.inline.calls.to.implemented.procedures NEVER --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-5189fb6-m [2024-09-12 21:13:03,786 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 21:13:03,856 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 21:13:03,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 21:13:03,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 21:13:03,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 21:13:03,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 21:13:03,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 21:13:03,897 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 21:13:03,898 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 21:13:03,899 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 21:13:03,900 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 21:13:03,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 21:13:03,902 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 21:13:03,902 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 21:13:03,902 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 21:13:03,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 21:13:03,903 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 21:13:03,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 21:13:03,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 21:13:03,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 21:13:03,907 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 21:13:03,907 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 21:13:03,907 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 21:13:03,907 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 21:13:03,908 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 21:13:03,908 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 21:13:03,908 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 21:13:03,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 21:13:03,909 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 21:13:03,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 21:13:03,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 21:13:03,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 21:13:03,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 21:13:03,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 21:13:03,910 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 21:13:03,910 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 21:13:03,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 21:13:03,911 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 21:13:03,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 21:13:03,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 21:13:03,912 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 21:13:03,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25ec36157cae05963a6c18a739b5ec777339c87a162ad2e43daaca83e0e91f82 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 21:13:04,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 21:13:04,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 21:13:04,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 21:13:04,152 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 21:13:04,153 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 21:13:04,154 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops/trex03-2_abstracted.c [2024-09-12 21:13:05,620 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 21:13:05,799 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 21:13:05,799 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops/trex03-2_abstracted.c [2024-09-12 21:13:05,805 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/dca0d98ec/a037fa600a2f48d98150326d41e37250/FLAG57a873753 [2024-09-12 21:13:05,819 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/dca0d98ec/a037fa600a2f48d98150326d41e37250 [2024-09-12 21:13:05,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 21:13:05,822 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 21:13:05,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 21:13:05,823 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 21:13:05,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 21:13:05,828 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 09:13:05" (1/1) ... [2024-09-12 21:13:05,829 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0723e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:05, skipping insertion in model container [2024-09-12 21:13:05,830 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 09:13:05" (1/1) ... [2024-09-12 21:13:05,846 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 21:13:06,024 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/trex03-2_abstracted.c[738,751] [2024-09-12 21:13:06,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 21:13:06,063 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 21:13:06,076 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/trex03-2_abstracted.c[738,751] [2024-09-12 21:13:06,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 21:13:06,100 INFO L204 MainTranslator]: Completed translation [2024-09-12 21:13:06,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:06 WrapperNode [2024-09-12 21:13:06,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 21:13:06,102 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 21:13:06,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 21:13:06,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 21:13:06,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:06" (1/1) ... [2024-09-12 21:13:06,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:06" (1/1) ... [2024-09-12 21:13:06,121 INFO L138 Inliner]: procedures = 20, calls = 8, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 21:13:06,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 21:13:06,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 21:13:06,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 21:13:06,123 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 21:13:06,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:06" (1/1) ... [2024-09-12 21:13:06,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:06" (1/1) ... [2024-09-12 21:13:06,135 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:06" (1/1) ... [2024-09-12 21:13:06,152 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]. [2024-09-12 21:13:06,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:06" (1/1) ... [2024-09-12 21:13:06,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:06" (1/1) ... [2024-09-12 21:13:06,159 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:06" (1/1) ... [2024-09-12 21:13:06,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:06" (1/1) ... [2024-09-12 21:13:06,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:06" (1/1) ... [2024-09-12 21:13:06,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:06" (1/1) ... [2024-09-12 21:13:06,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 21:13:06,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 21:13:06,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 21:13:06,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 21:13:06,167 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:06" (1/1) ... [2024-09-12 21:13:06,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 21:13:06,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:13:06,199 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) [2024-09-12 21:13:06,201 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 [2024-09-12 21:13:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 21:13:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 21:13:06,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 21:13:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 21:13:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 21:13:06,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 21:13:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 21:13:06,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 21:13:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 21:13:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 21:13:06,310 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 21:13:06,312 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 21:13:06,588 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-09-12 21:13:06,588 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 21:13:06,613 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 21:13:06,613 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-12 21:13:06,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 09:13:06 BoogieIcfgContainer [2024-09-12 21:13:06,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 21:13:06,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 21:13:06,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 21:13:06,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 21:13:06,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 09:13:05" (1/3) ... [2024-09-12 21:13:06,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323a50b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 09:13:06, skipping insertion in model container [2024-09-12 21:13:06,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:13:06" (2/3) ... [2024-09-12 21:13:06,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323a50b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 09:13:06, skipping insertion in model container [2024-09-12 21:13:06,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 09:13:06" (3/3) ... [2024-09-12 21:13:06,623 INFO L112 eAbstractionObserver]: Analyzing ICFG trex03-2_abstracted.c [2024-09-12 21:13:06,640 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 21:13:06,641 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 21:13:06,700 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 21:13:06,708 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;@17513190, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 21:13:06,708 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 21:13:06,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 21:13:06,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 21:13:06,720 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:13:06,721 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:13:06,721 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:13:06,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:13:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash 342776240, now seen corresponding path program 1 times [2024-09-12 21:13:06,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:13:06,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954677005] [2024-09-12 21:13:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:13:06,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:13:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:13:06,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:13:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:13:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:13:06,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:13:06,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954677005] [2024-09-12 21:13:06,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954677005] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:13:06,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:13:06,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 21:13:06,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164925489] [2024-09-12 21:13:06,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:13:06,992 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 21:13:06,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:13:07,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 21:13:07,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 21:13:07,015 INFO L87 Difference]: Start difference. First operand has 30 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:07,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:13:07,099 INFO L93 Difference]: Finished difference Result 49 states and 66 transitions. [2024-09-12 21:13:07,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 21:13:07,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-09-12 21:13:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:13:07,106 INFO L225 Difference]: With dead ends: 49 [2024-09-12 21:13:07,106 INFO L226 Difference]: Without dead ends: 25 [2024-09-12 21:13:07,108 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 21:13:07,111 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:13:07,112 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:13:07,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-12 21:13:07,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-12 21:13:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:07,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2024-09-12 21:13:07,139 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 15 [2024-09-12 21:13:07,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:13:07,139 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2024-09-12 21:13:07,139 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:07,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:13:07,140 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2024-09-12 21:13:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 21:13:07,141 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:13:07,141 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:13:07,141 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 21:13:07,141 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:13:07,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:13:07,142 INFO L85 PathProgramCache]: Analyzing trace with hash -466570386, now seen corresponding path program 1 times [2024-09-12 21:13:07,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:13:07,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743644275] [2024-09-12 21:13:07,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:13:07,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:13:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:13:07,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:13:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:13:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:13:07,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:13:07,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743644275] [2024-09-12 21:13:07,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743644275] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:13:07,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:13:07,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 21:13:07,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124979337] [2024-09-12 21:13:07,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:13:07,581 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 21:13:07,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:13:07,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 21:13:07,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 21:13:07,583 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:13:07,672 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2024-09-12 21:13:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 21:13:07,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-09-12 21:13:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:13:07,675 INFO L225 Difference]: With dead ends: 49 [2024-09-12 21:13:07,676 INFO L226 Difference]: Without dead ends: 28 [2024-09-12 21:13:07,678 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 21:13:07,679 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:13:07,679 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 97 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:13:07,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-12 21:13:07,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-12 21:13:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:07,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-09-12 21:13:07,690 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2024-09-12 21:13:07,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:13:07,691 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-09-12 21:13:07,691 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:07,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:13:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-09-12 21:13:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 21:13:07,697 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:13:07,697 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:13:07,697 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 21:13:07,698 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:13:07,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:13:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash 343340118, now seen corresponding path program 1 times [2024-09-12 21:13:07,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:13:07,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772372863] [2024-09-12 21:13:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:13:07,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:13:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:13:07,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:13:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:13:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:13:07,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:13:07,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772372863] [2024-09-12 21:13:07,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772372863] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:13:07,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:13:07,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 21:13:07,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837886187] [2024-09-12 21:13:07,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:13:07,764 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 21:13:07,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:13:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 21:13:07,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 21:13:07,766 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:13:07,800 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2024-09-12 21:13:07,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 21:13:07,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-09-12 21:13:07,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:13:07,804 INFO L225 Difference]: With dead ends: 43 [2024-09-12 21:13:07,805 INFO L226 Difference]: Without dead ends: 28 [2024-09-12 21:13:07,806 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 21:13:07,807 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:13:07,810 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:13:07,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-12 21:13:07,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-12 21:13:07,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:07,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-09-12 21:13:07,822 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 17 [2024-09-12 21:13:07,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:13:07,823 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-09-12 21:13:07,823 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:07,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:13:07,824 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-09-12 21:13:07,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 21:13:07,826 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:13:07,827 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:13:07,827 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 21:13:07,827 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:13:07,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:13:07,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1256824498, now seen corresponding path program 1 times [2024-09-12 21:13:07,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:13:07,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659928253] [2024-09-12 21:13:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:13:07,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:13:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:13:08,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:13:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:13:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:13:08,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:13:08,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659928253] [2024-09-12 21:13:08,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659928253] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:13:08,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:13:08,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 21:13:08,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223475666] [2024-09-12 21:13:08,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:13:08,133 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 21:13:08,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:13:08,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 21:13:08,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 21:13:08,136 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:08,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:13:08,295 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2024-09-12 21:13:08,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 21:13:08,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-09-12 21:13:08,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:13:08,297 INFO L225 Difference]: With dead ends: 44 [2024-09-12 21:13:08,297 INFO L226 Difference]: Without dead ends: 28 [2024-09-12 21:13:08,298 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 21:13:08,299 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:13:08,299 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 72 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:13:08,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-12 21:13:08,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-09-12 21:13:08,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-09-12 21:13:08,318 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 17 [2024-09-12 21:13:08,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:13:08,319 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-09-12 21:13:08,320 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:08,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:13:08,320 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-09-12 21:13:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 21:13:08,321 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:13:08,321 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:13:08,321 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 21:13:08,322 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:13:08,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:13:08,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1081416993, now seen corresponding path program 1 times [2024-09-12 21:13:08,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:13:08,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372152824] [2024-09-12 21:13:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:13:08,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:13:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:13:08,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:13:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:13:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:13:08,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:13:08,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372152824] [2024-09-12 21:13:08,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372152824] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:13:08,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:13:08,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 21:13:08,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459461572] [2024-09-12 21:13:08,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:13:08,523 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 21:13:08,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:13:08,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 21:13:08,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 21:13:08,525 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:08,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:13:08,632 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2024-09-12 21:13:08,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 21:13:08,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-09-12 21:13:08,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:13:08,634 INFO L225 Difference]: With dead ends: 34 [2024-09-12 21:13:08,635 INFO L226 Difference]: Without dead ends: 28 [2024-09-12 21:13:08,635 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 21:13:08,637 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:13:08,638 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 77 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:13:08,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-12 21:13:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-09-12 21:13:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-12 21:13:08,651 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2024-09-12 21:13:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:13:08,651 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-12 21:13:08,652 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:08,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:13:08,652 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-12 21:13:08,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 21:13:08,653 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:13:08,653 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:13:08,654 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 21:13:08,654 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:13:08,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:13:08,655 INFO L85 PathProgramCache]: Analyzing trace with hash 663506992, now seen corresponding path program 1 times [2024-09-12 21:13:08,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:13:08,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755029050] [2024-09-12 21:13:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:13:08,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:13:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:13:08,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:13:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:13:08,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:13:08,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:13:08,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755029050] [2024-09-12 21:13:08,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755029050] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:13:08,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:13:08,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 21:13:08,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373465730] [2024-09-12 21:13:08,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:13:08,725 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 21:13:08,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:13:08,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 21:13:08,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 21:13:08,727 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:13:08,796 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2024-09-12 21:13:08,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 21:13:08,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-09-12 21:13:08,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:13:08,799 INFO L225 Difference]: With dead ends: 34 [2024-09-12 21:13:08,799 INFO L226 Difference]: Without dead ends: 28 [2024-09-12 21:13:08,799 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-12 21:13:08,799 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:13:08,800 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 56 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:13:08,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-12 21:13:08,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-09-12 21:13:08,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:08,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-09-12 21:13:08,809 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2024-09-12 21:13:08,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:13:08,809 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-09-12 21:13:08,810 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:08,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:13:08,810 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-09-12 21:13:08,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 21:13:08,811 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:13:08,811 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:13:08,811 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-12 21:13:08,811 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:13:08,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:13:08,812 INFO L85 PathProgramCache]: Analyzing trace with hash 679086302, now seen corresponding path program 1 times [2024-09-12 21:13:08,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:13:08,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435325579] [2024-09-12 21:13:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:13:08,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:13:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:13:08,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:13:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:13:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:13:08,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:13:08,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435325579] [2024-09-12 21:13:08,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435325579] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:13:08,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:13:08,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 21:13:08,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48787439] [2024-09-12 21:13:08,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:13:08,952 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 21:13:08,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:13:08,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 21:13:08,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-12 21:13:08,953 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:08,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:13:08,978 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2024-09-12 21:13:08,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 21:13:08,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-09-12 21:13:08,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:13:08,979 INFO L225 Difference]: With dead ends: 28 [2024-09-12 21:13:08,979 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 21:13:08,980 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-12 21:13:08,980 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:13:08,981 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 20 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:13:08,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 21:13:08,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 21:13:08,982 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) [2024-09-12 21:13:08,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 21:13:08,982 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2024-09-12 21:13:08,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:13:08,982 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 21:13:08,982 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:13:08,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:13:08,983 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 21:13:08,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 21:13:08,985 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-12 21:13:08,986 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-12 21:13:08,989 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:13:08,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 21:13:09,226 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-12 21:13:09,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 09:13:09 BoogieIcfgContainer [2024-09-12 21:13:09,239 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-12 21:13:09,239 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-12 21:13:09,239 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-12 21:13:09,240 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-12 21:13:09,240 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 09:13:06" (3/4) ... [2024-09-12 21:13:09,242 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-12 21:13:09,245 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-12 21:13:09,246 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-12 21:13:09,246 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-12 21:13:09,249 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2024-09-12 21:13:09,249 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-09-12 21:13:09,250 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-12 21:13:09,250 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-12 21:13:09,329 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-12 21:13:09,330 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-12 21:13:09,330 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-12 21:13:09,330 INFO L158 Benchmark]: Toolchain (without parser) took 3508.20ms. Allocated memory was 159.4MB in the beginning and 239.1MB in the end (delta: 79.7MB). Free memory was 87.6MB in the beginning and 145.2MB in the end (delta: -57.6MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2024-09-12 21:13:09,330 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 21:13:09,331 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.76ms. Allocated memory is still 159.4MB. Free memory was 87.4MB in the beginning and 128.0MB in the end (delta: -40.6MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2024-09-12 21:13:09,331 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.45ms. Allocated memory is still 159.4MB. Free memory was 128.0MB in the beginning and 127.1MB in the end (delta: 844.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 21:13:09,331 INFO L158 Benchmark]: Boogie Preprocessor took 42.26ms. Allocated memory is still 159.4MB. Free memory was 126.6MB in the beginning and 125.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 21:13:09,331 INFO L158 Benchmark]: RCFGBuilder took 448.65ms. Allocated memory is still 159.4MB. Free memory was 125.0MB in the beginning and 108.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-12 21:13:09,332 INFO L158 Benchmark]: TraceAbstraction took 2622.87ms. Allocated memory was 159.4MB in the beginning and 239.1MB in the end (delta: 79.7MB). Free memory was 107.7MB in the beginning and 150.4MB in the end (delta: -42.7MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2024-09-12 21:13:09,332 INFO L158 Benchmark]: Witness Printer took 90.44ms. Allocated memory is still 239.1MB. Free memory was 150.4MB in the beginning and 145.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-12 21:13:09,333 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.76ms. Allocated memory is still 159.4MB. Free memory was 87.4MB in the beginning and 128.0MB in the end (delta: -40.6MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.45ms. Allocated memory is still 159.4MB. Free memory was 128.0MB in the beginning and 127.1MB in the end (delta: 844.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.26ms. Allocated memory is still 159.4MB. Free memory was 126.6MB in the beginning and 125.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 448.65ms. Allocated memory is still 159.4MB. Free memory was 125.0MB in the beginning and 108.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2622.87ms. Allocated memory was 159.4MB in the beginning and 239.1MB in the end (delta: 79.7MB). Free memory was 107.7MB in the beginning and 150.4MB in the end (delta: -42.7MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * Witness Printer took 90.44ms. Allocated memory is still 239.1MB. Free memory was 150.4MB in the beginning and 145.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: 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 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 434 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 284 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 237 IncrementalHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 150 mSDtfsCounter, 237 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 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 - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-12 21:13:09,358 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