./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Ackermann03.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 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/recursive/Ackermann03.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 c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd --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-a9b967e-m [2024-09-12 16:26:00,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 16:26:00,905 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 16:26:00,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 16:26:00,914 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 16:26:00,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 16:26:00,937 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 16:26:00,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 16:26:00,938 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 16:26:00,941 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 16:26:00,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 16:26:00,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 16:26:00,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 16:26:00,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 16:26:00,944 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 16:26:00,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 16:26:00,944 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 16:26:00,944 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 16:26:00,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 16:26:00,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 16:26:00,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 16:26:00,948 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 16:26:00,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 16:26:00,948 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 16:26:00,949 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 16:26:00,949 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 16:26:00,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 16:26:00,949 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 16:26:00,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 16:26:00,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 16:26:00,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 16:26:00,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 16:26:00,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:26:00,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 16:26:00,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 16:26:00,951 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 16:26:00,952 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 16:26:00,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 16:26:00,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 16:26:00,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 16:26:00,953 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 16:26:00,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 16:26:00,953 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 16:26:01,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 16:26:01,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 16:26:01,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 16:26:01,210 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 16:26:01,210 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 16:26:01,211 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Ackermann03.c [2024-09-12 16:26:02,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 16:26:02,543 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 16:26:02,543 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann03.c [2024-09-12 16:26:02,548 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9d6765eb6/437351327c994a1cb33bf94a5680ccd9/FLAG314f1b7b5 [2024-09-12 16:26:02,558 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9d6765eb6/437351327c994a1cb33bf94a5680ccd9 [2024-09-12 16:26:02,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 16:26:02,560 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 16:26:02,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 16:26:02,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 16:26:02,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 16:26:02,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:26:02" (1/1) ... [2024-09-12 16:26:02,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7400d8f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02, skipping insertion in model container [2024-09-12 16:26:02,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:26:02" (1/1) ... [2024-09-12 16:26:02,593 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 16:26:02,717 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/recursive/Ackermann03.c[1168,1181] [2024-09-12 16:26:02,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:26:02,734 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 16:26:02,746 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/recursive/Ackermann03.c[1168,1181] [2024-09-12 16:26:02,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:26:02,762 INFO L204 MainTranslator]: Completed translation [2024-09-12 16:26:02,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02 WrapperNode [2024-09-12 16:26:02,762 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 16:26:02,763 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 16:26:02,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 16:26:02,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 16:26:02,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02" (1/1) ... [2024-09-12 16:26:02,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02" (1/1) ... [2024-09-12 16:26:02,778 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 16:26:02,778 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 16:26:02,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 16:26:02,780 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 16:26:02,780 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 16:26:02,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02" (1/1) ... [2024-09-12 16:26:02,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02" (1/1) ... [2024-09-12 16:26:02,789 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02" (1/1) ... [2024-09-12 16:26:02,800 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 16:26:02,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02" (1/1) ... [2024-09-12 16:26:02,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02" (1/1) ... [2024-09-12 16:26:02,807 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02" (1/1) ... [2024-09-12 16:26:02,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02" (1/1) ... [2024-09-12 16:26:02,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02" (1/1) ... [2024-09-12 16:26:02,809 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02" (1/1) ... [2024-09-12 16:26:02,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 16:26:02,812 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 16:26:02,812 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 16:26:02,812 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 16:26:02,813 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02" (1/1) ... [2024-09-12 16:26:02,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:26:02,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:02,837 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 16:26:02,841 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 16:26:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 16:26:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 16:26:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 16:26:02,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 16:26:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 16:26:02,874 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-09-12 16:26:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-09-12 16:26:02,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 16:26:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 16:26:02,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 16:26:02,919 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 16:26:02,920 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 16:26:03,050 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-09-12 16:26:03,050 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 16:26:03,068 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 16:26:03,068 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-12 16:26:03,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:26:03 BoogieIcfgContainer [2024-09-12 16:26:03,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 16:26:03,070 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 16:26:03,070 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 16:26:03,074 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 16:26:03,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 04:26:02" (1/3) ... [2024-09-12 16:26:03,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647228fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:26:03, skipping insertion in model container [2024-09-12 16:26:03,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:02" (2/3) ... [2024-09-12 16:26:03,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647228fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:26:03, skipping insertion in model container [2024-09-12 16:26:03,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:26:03" (3/3) ... [2024-09-12 16:26:03,078 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2024-09-12 16:26:03,090 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 16:26:03,091 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 16:26:03,138 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 16:26:03,144 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;@70143525, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 16:26:03,144 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 16:26:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 16:26:03,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 16:26:03,152 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:03,153 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:03,153 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:03,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:03,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2113269736, now seen corresponding path program 1 times [2024-09-12 16:26:03,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:03,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187344938] [2024-09-12 16:26:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:03,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:03,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:03,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-12 16:26:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:03,392 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 16:26:03,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:03,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187344938] [2024-09-12 16:26:03,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187344938] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:03,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:03,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 16:26:03,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899703372] [2024-09-12 16:26:03,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:03,401 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:26:03,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:03,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:26:03,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:26:03,425 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 16:26:03,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:03,543 INFO L93 Difference]: Finished difference Result 55 states and 81 transitions. [2024-09-12 16:26:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 16:26:03,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-09-12 16:26:03,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:03,550 INFO L225 Difference]: With dead ends: 55 [2024-09-12 16:26:03,551 INFO L226 Difference]: Without dead ends: 30 [2024-09-12 16:26:03,553 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 16:26:03,555 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:03,557 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 84 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:26:03,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-12 16:26:03,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-12 16:26:03,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 16:26:03,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-09-12 16:26:03,594 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2024-09-12 16:26:03,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:03,594 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-09-12 16:26:03,595 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 16:26:03,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-09-12 16:26:03,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 16:26:03,598 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:03,598 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:03,599 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 16:26:03,599 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:03,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:03,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2051125499, now seen corresponding path program 1 times [2024-09-12 16:26:03,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:03,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983585134] [2024-09-12 16:26:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:03,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:03,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:03,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-12 16:26:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:03,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:03,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:26:03,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:03,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983585134] [2024-09-12 16:26:03,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983585134] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:03,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810225073] [2024-09-12 16:26:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:03,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:03,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:03,751 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) [2024-09-12 16:26:03,756 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 16:26:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:03,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 16:26:03,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:26:03,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:03,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:26:03,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810225073] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:03,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:03,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-12 16:26:03,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004485288] [2024-09-12 16:26:03,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:03,971 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 16:26:03,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:03,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 16:26:03,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-12 16:26:03,974 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-12 16:26:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:04,150 INFO L93 Difference]: Finished difference Result 83 states and 138 transitions. [2024-09-12 16:26:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 16:26:04,151 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 22 [2024-09-12 16:26:04,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:04,153 INFO L225 Difference]: With dead ends: 83 [2024-09-12 16:26:04,153 INFO L226 Difference]: Without dead ends: 59 [2024-09-12 16:26:04,154 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 16:26:04,156 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 26 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:04,156 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 119 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:26:04,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-12 16:26:04,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2024-09-12 16:26:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 34 states have internal predecessors, (39), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (28), 13 states have call predecessors, (28), 11 states have call successors, (28) [2024-09-12 16:26:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2024-09-12 16:26:04,173 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 22 [2024-09-12 16:26:04,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:04,173 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 79 transitions. [2024-09-12 16:26:04,173 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-12 16:26:04,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:04,174 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2024-09-12 16:26:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 16:26:04,175 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:04,176 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:04,190 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 16:26:04,379 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:04,380 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:04,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:04,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1636113567, now seen corresponding path program 1 times [2024-09-12 16:26:04,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:04,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161161753] [2024-09-12 16:26:04,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:04,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:04,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:04,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-12 16:26:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:04,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:04,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:04,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:04,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:04,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:26:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-12 16:26:04,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:04,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161161753] [2024-09-12 16:26:04,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161161753] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:04,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869880943] [2024-09-12 16:26:04,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:04,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:04,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:04,726 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) [2024-09-12 16:26:04,728 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 16:26:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:04,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 16:26:04,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-12 16:26:04,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-12 16:26:05,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869880943] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:05,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:05,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2024-09-12 16:26:05,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026288219] [2024-09-12 16:26:05,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:05,284 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 16:26:05,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:05,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 16:26:05,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-12 16:26:05,285 INFO L87 Difference]: Start difference. First operand 53 states and 79 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-12 16:26:05,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:05,385 INFO L93 Difference]: Finished difference Result 123 states and 230 transitions. [2024-09-12 16:26:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 16:26:05,385 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 48 [2024-09-12 16:26:05,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:05,387 INFO L225 Difference]: With dead ends: 123 [2024-09-12 16:26:05,387 INFO L226 Difference]: Without dead ends: 56 [2024-09-12 16:26:05,391 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-09-12 16:26:05,392 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:05,392 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 85 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:26:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-12 16:26:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-12 16:26:05,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (29), 12 states have call predecessors, (29), 9 states have call successors, (29) [2024-09-12 16:26:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2024-09-12 16:26:05,410 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 48 [2024-09-12 16:26:05,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:05,410 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2024-09-12 16:26:05,411 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-12 16:26:05,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:05,411 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2024-09-12 16:26:05,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-12 16:26:05,413 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:05,413 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:05,425 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:05,617 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:05,617 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:05,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:05,618 INFO L85 PathProgramCache]: Analyzing trace with hash 732471144, now seen corresponding path program 2 times [2024-09-12 16:26:05,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:05,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043732214] [2024-09-12 16:26:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:05,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:05,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:05,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-12 16:26:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:05,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:05,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:05,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:05,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:05,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:05,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:06,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 16:26:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:06,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:06,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 16:26:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:06,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 101 proven. 59 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-12 16:26:06,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:06,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043732214] [2024-09-12 16:26:06,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043732214] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:06,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444620117] [2024-09-12 16:26:06,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:26:06,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:06,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:06,053 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) [2024-09-12 16:26:06,054 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 16:26:06,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:26:06,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:06,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-12 16:26:06,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 141 proven. 37 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-09-12 16:26:06,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-12 16:26:07,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444620117] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:07,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:07,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 29 [2024-09-12 16:26:07,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941014720] [2024-09-12 16:26:07,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:07,371 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-12 16:26:07,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:07,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-12 16:26:07,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-09-12 16:26:07,372 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-12 16:26:07,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:07,716 INFO L93 Difference]: Finished difference Result 122 states and 225 transitions. [2024-09-12 16:26:07,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 16:26:07,717 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) Word has length 82 [2024-09-12 16:26:07,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:07,719 INFO L225 Difference]: With dead ends: 122 [2024-09-12 16:26:07,722 INFO L226 Difference]: Without dead ends: 74 [2024-09-12 16:26:07,723 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=381, Invalid=1599, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 16:26:07,725 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:07,725 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 192 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:26:07,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-12 16:26:07,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2024-09-12 16:26:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (25), 12 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-12 16:26:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2024-09-12 16:26:07,760 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 82 [2024-09-12 16:26:07,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:07,761 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2024-09-12 16:26:07,761 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-12 16:26:07,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:07,762 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2024-09-12 16:26:07,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-12 16:26:07,767 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:07,767 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:07,779 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:07,968 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:07,968 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:07,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1096714260, now seen corresponding path program 3 times [2024-09-12 16:26:07,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:07,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301957054] [2024-09-12 16:26:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:07,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-12 16:26:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 16:26:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 16:26:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 163 proven. 157 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-09-12 16:26:08,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:08,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301957054] [2024-09-12 16:26:08,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301957054] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:08,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911171241] [2024-09-12 16:26:08,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:26:08,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:08,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:08,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:08,488 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 16:26:08,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-12 16:26:08,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:08,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 16:26:08,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 190 proven. 71 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-09-12 16:26:08,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 208 proven. 61 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-09-12 16:26:09,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911171241] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:09,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:09,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 15] total 28 [2024-09-12 16:26:09,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569895859] [2024-09-12 16:26:09,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:09,539 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 16:26:09,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:09,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 16:26:09,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2024-09-12 16:26:09,540 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2024-09-12 16:26:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:09,959 INFO L93 Difference]: Finished difference Result 122 states and 209 transitions. [2024-09-12 16:26:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-12 16:26:09,959 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) Word has length 108 [2024-09-12 16:26:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:09,961 INFO L225 Difference]: With dead ends: 122 [2024-09-12 16:26:09,961 INFO L226 Difference]: Without dead ends: 67 [2024-09-12 16:26:09,962 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 235 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=492, Invalid=1958, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 16:26:09,963 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:09,963 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 240 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:26:09,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-12 16:26:09,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2024-09-12 16:26:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 40 states have internal predecessors, (45), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2024-09-12 16:26:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2024-09-12 16:26:09,971 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 108 [2024-09-12 16:26:09,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:09,972 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2024-09-12 16:26:09,972 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2024-09-12 16:26:09,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2024-09-12 16:26:09,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-09-12 16:26:09,977 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:09,977 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 20, 13, 12, 12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:09,989 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 16:26:10,181 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:10,182 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:10,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:10,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1260803800, now seen corresponding path program 4 times [2024-09-12 16:26:10,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:10,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351305573] [2024-09-12 16:26:10,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:10,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-12 16:26:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 16:26:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 16:26:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 16:26:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 16:26:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 16:26:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 16:26:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 16:26:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 16:26:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 219 proven. 706 refuted. 0 times theorem prover too weak. 1697 trivial. 0 not checked. [2024-09-12 16:26:10,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:10,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351305573] [2024-09-12 16:26:10,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351305573] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:10,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577798580] [2024-09-12 16:26:10,904 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 16:26:10,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:10,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:10,906 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:10,907 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 16:26:11,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 16:26:11,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:11,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 16:26:11,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 282 proven. 646 refuted. 0 times theorem prover too weak. 1694 trivial. 0 not checked. [2024-09-12 16:26:11,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 284 proven. 692 refuted. 0 times theorem prover too weak. 1646 trivial. 0 not checked. [2024-09-12 16:26:12,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577798580] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:12,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:12,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 11] total 27 [2024-09-12 16:26:12,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862046900] [2024-09-12 16:26:12,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:12,875 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 16:26:12,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:12,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 16:26:12,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2024-09-12 16:26:12,876 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 24 states have internal predecessors, (79), 15 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) [2024-09-12 16:26:13,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:13,767 INFO L93 Difference]: Finished difference Result 198 states and 405 transitions. [2024-09-12 16:26:13,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-12 16:26:13,768 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 24 states have internal predecessors, (79), 15 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) Word has length 227 [2024-09-12 16:26:13,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:13,771 INFO L225 Difference]: With dead ends: 198 [2024-09-12 16:26:13,771 INFO L226 Difference]: Without dead ends: 73 [2024-09-12 16:26:13,774 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 504 SyntacticMatches, 9 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1664 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1247, Invalid=5073, Unknown=0, NotChecked=0, Total=6320 [2024-09-12 16:26:13,774 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 84 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:13,774 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 266 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 16:26:13,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-12 16:26:13,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2024-09-12 16:26:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 7 states have call predecessors, (12), 10 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-12 16:26:13,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2024-09-12 16:26:13,788 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 227 [2024-09-12 16:26:13,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:13,790 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2024-09-12 16:26:13,790 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 24 states have internal predecessors, (79), 15 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) [2024-09-12 16:26:13,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:13,791 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2024-09-12 16:26:13,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 16:26:13,796 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:13,796 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:13,809 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:13,996 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 16:26:13,997 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:13,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:13,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1720213164, now seen corresponding path program 5 times [2024-09-12 16:26:13,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:13,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929349025] [2024-09-12 16:26:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:13,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-12 16:26:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 16:26:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:26:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 16:26:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 16:26:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:26:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 16:26:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 445 proven. 284 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-09-12 16:26:14,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:14,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929349025] [2024-09-12 16:26:14,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929349025] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:14,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514062329] [2024-09-12 16:26:14,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 16:26:14,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:14,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:14,790 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:14,790 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 16:26:14,903 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-12 16:26:14,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:14,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-12 16:26:14,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-09-12 16:26:15,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:18,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 467 proven. 286 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2024-09-12 16:26:18,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514062329] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:18,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:18,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 27] total 38 [2024-09-12 16:26:18,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447960307] [2024-09-12 16:26:18,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:18,076 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-12 16:26:18,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:18,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-12 16:26:18,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 16:26:18,078 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-12 16:26:18,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:18,602 INFO L93 Difference]: Finished difference Result 143 states and 184 transitions. [2024-09-12 16:26:18,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 16:26:18,602 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) Word has length 160 [2024-09-12 16:26:18,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:18,604 INFO L225 Difference]: With dead ends: 143 [2024-09-12 16:26:18,604 INFO L226 Difference]: Without dead ends: 86 [2024-09-12 16:26:18,605 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 342 SyntacticMatches, 14 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=816, Invalid=3606, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 16:26:18,606 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:18,606 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 350 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 16:26:18,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-12 16:26:18,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 70. [2024-09-12 16:26:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 46 states have internal predecessors, (51), 13 states have call successors, (13), 7 states have call predecessors, (13), 11 states have return successors, (23), 16 states have call predecessors, (23), 12 states have call successors, (23) [2024-09-12 16:26:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2024-09-12 16:26:18,618 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 160 [2024-09-12 16:26:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:18,618 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2024-09-12 16:26:18,619 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-12 16:26:18,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2024-09-12 16:26:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-12 16:26:18,620 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:18,622 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:18,636 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:18,826 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:18,827 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:18,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:18,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1618887262, now seen corresponding path program 6 times [2024-09-12 16:26:18,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:18,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223387046] [2024-09-12 16:26:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:18,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-12 16:26:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 16:26:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:26:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 16:26:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 16:26:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:26:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 16:26:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 16:26:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 502 proven. 372 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2024-09-12 16:26:19,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:19,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223387046] [2024-09-12 16:26:19,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223387046] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:19,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849898996] [2024-09-12 16:26:19,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 16:26:19,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:19,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:19,666 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:19,667 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 16:26:19,828 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-09-12 16:26:19,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:19,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-12 16:26:19,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-09-12 16:26:19,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-09-12 16:26:22,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849898996] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:22,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:22,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 28] total 35 [2024-09-12 16:26:22,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232461894] [2024-09-12 16:26:22,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:22,899 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-12 16:26:22,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:22,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-12 16:26:22,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 16:26:22,901 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-12 16:26:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:23,468 INFO L93 Difference]: Finished difference Result 161 states and 212 transitions. [2024-09-12 16:26:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-12 16:26:23,469 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) Word has length 173 [2024-09-12 16:26:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:23,470 INFO L225 Difference]: With dead ends: 161 [2024-09-12 16:26:23,471 INFO L226 Difference]: Without dead ends: 99 [2024-09-12 16:26:23,473 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 371 SyntacticMatches, 19 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=928, Invalid=3764, Unknown=0, NotChecked=0, Total=4692 [2024-09-12 16:26:23,473 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 41 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:23,474 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 293 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:26:23,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-12 16:26:23,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 75. [2024-09-12 16:26:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.125) internal successors, (54), 49 states have internal predecessors, (54), 14 states have call successors, (14), 7 states have call predecessors, (14), 12 states have return successors, (27), 18 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-12 16:26:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2024-09-12 16:26:23,491 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 173 [2024-09-12 16:26:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:23,492 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2024-09-12 16:26:23,492 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-12 16:26:23,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:23,492 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2024-09-12 16:26:23,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-09-12 16:26:23,494 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:23,494 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:23,508 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 16:26:23,698 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:23,699 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:23,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:23,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1288512238, now seen corresponding path program 7 times [2024-09-12 16:26:23,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:23,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290120820] [2024-09-12 16:26:23,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:23,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-12 16:26:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 16:26:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:26:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 16:26:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 16:26:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:26:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 16:26:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 16:26:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 16:26:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 600 proven. 156 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2024-09-12 16:26:24,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:24,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290120820] [2024-09-12 16:26:24,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290120820] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:24,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750103894] [2024-09-12 16:26:24,660 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 16:26:24,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:24,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:24,661 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:24,663 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 16:26:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:24,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-12 16:26:24,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 583 proven. 158 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2024-09-12 16:26:24,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 597 proven. 189 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2024-09-12 16:26:25,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750103894] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:25,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:25,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 33] total 36 [2024-09-12 16:26:25,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190045549] [2024-09-12 16:26:25,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:25,669 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 16:26:25,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:25,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 16:26:25,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 16:26:25,670 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) [2024-09-12 16:26:27,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:27,519 INFO L93 Difference]: Finished difference Result 149 states and 200 transitions. [2024-09-12 16:26:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-12 16:26:27,520 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) Word has length 186 [2024-09-12 16:26:27,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:27,521 INFO L225 Difference]: With dead ends: 149 [2024-09-12 16:26:27,521 INFO L226 Difference]: Without dead ends: 133 [2024-09-12 16:26:27,524 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=883, Invalid=6257, Unknown=0, NotChecked=0, Total=7140 [2024-09-12 16:26:27,524 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 169 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 2604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:27,524 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 608 Invalid, 2604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 16:26:27,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-12 16:26:27,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 89. [2024-09-12 16:26:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 58 states have internal predecessors, (65), 17 states have call successors, (17), 8 states have call predecessors, (17), 14 states have return successors, (38), 22 states have call predecessors, (38), 16 states have call successors, (38) [2024-09-12 16:26:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2024-09-12 16:26:27,558 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 186 [2024-09-12 16:26:27,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:27,559 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2024-09-12 16:26:27,559 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) [2024-09-12 16:26:27,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:27,560 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2024-09-12 16:26:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-09-12 16:26:27,562 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:27,562 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 16, 13, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:27,576 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 16:26:27,766 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:27,767 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:27,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:27,767 INFO L85 PathProgramCache]: Analyzing trace with hash 296710076, now seen corresponding path program 8 times [2024-09-12 16:26:27,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:27,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755583740] [2024-09-12 16:26:27,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:27,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-12 16:26:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 16:26:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:26:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 16:26:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 16:26:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:26:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 16:26:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 16:26:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 16:26:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 16:26:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 664 proven. 533 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2024-09-12 16:26:28,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:28,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755583740] [2024-09-12 16:26:28,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755583740] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:28,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469132224] [2024-09-12 16:26:28,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:26:28,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:28,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:28,738 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:28,739 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 16:26:28,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:26:28,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:28,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-12 16:26:28,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 647 proven. 519 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2024-09-12 16:26:29,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 685 proven. 580 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2024-09-12 16:26:32,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469132224] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:32,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:32,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 32] total 39 [2024-09-12 16:26:32,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186146052] [2024-09-12 16:26:32,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:32,683 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-12 16:26:32,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:32,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-12 16:26:32,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1280, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 16:26:32,684 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (46), 18 states have call predecessors, (46), 21 states have call successors, (46) [2024-09-12 16:26:33,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:33,211 INFO L93 Difference]: Finished difference Result 211 states and 289 transitions. [2024-09-12 16:26:33,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-12 16:26:33,211 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (46), 18 states have call predecessors, (46), 21 states have call successors, (46) Word has length 199 [2024-09-12 16:26:33,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:33,213 INFO L225 Difference]: With dead ends: 211 [2024-09-12 16:26:33,213 INFO L226 Difference]: Without dead ends: 130 [2024-09-12 16:26:33,215 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 427 SyntacticMatches, 21 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=719, Invalid=3063, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 16:26:33,215 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 76 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:33,215 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 407 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 16:26:33,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-12 16:26:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 94. [2024-09-12 16:26:33,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 61 states have internal predecessors, (67), 18 states have call successors, (18), 8 states have call predecessors, (18), 15 states have return successors, (40), 24 states have call predecessors, (40), 17 states have call successors, (40) [2024-09-12 16:26:33,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 125 transitions. [2024-09-12 16:26:33,232 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 125 transitions. Word has length 199 [2024-09-12 16:26:33,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:33,232 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 125 transitions. [2024-09-12 16:26:33,233 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (46), 18 states have call predecessors, (46), 21 states have call successors, (46) [2024-09-12 16:26:33,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:33,233 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 125 transitions. [2024-09-12 16:26:33,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-12 16:26:33,234 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:33,234 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 17, 14, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:33,247 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:33,438 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-12 16:26:33,438 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:33,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:33,439 INFO L85 PathProgramCache]: Analyzing trace with hash 62516586, now seen corresponding path program 9 times [2024-09-12 16:26:33,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:33,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475840450] [2024-09-12 16:26:33,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:33,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-12 16:26:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 16:26:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:33,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:26:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 16:26:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 16:26:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 16:26:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:26:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 16:26:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 16:26:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 16:26:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 16:26:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 267 proven. 793 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2024-09-12 16:26:34,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:34,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475840450] [2024-09-12 16:26:34,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475840450] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:34,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623678123] [2024-09-12 16:26:34,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:26:34,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:34,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:34,104 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:34,105 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 16:26:34,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-09-12 16:26:34,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:34,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-12 16:26:34,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 1340 proven. 196 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-09-12 16:26:34,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 274 proven. 806 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2024-09-12 16:26:36,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623678123] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:36,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:36,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 21] total 28 [2024-09-12 16:26:36,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900517561] [2024-09-12 16:26:36,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:36,052 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 16:26:36,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:36,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 16:26:36,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2024-09-12 16:26:36,053 INFO L87 Difference]: Start difference. First operand 94 states and 125 transitions. Second operand has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (24), 2 states have call predecessors, (24), 14 states have return successors, (37), 13 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-12 16:26:36,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:36,310 INFO L93 Difference]: Finished difference Result 186 states and 252 transitions. [2024-09-12 16:26:36,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 16:26:36,310 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (24), 2 states have call predecessors, (24), 14 states have return successors, (37), 13 states have call predecessors, (37), 16 states have call successors, (37) Word has length 212 [2024-09-12 16:26:36,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:36,311 INFO L225 Difference]: With dead ends: 186 [2024-09-12 16:26:36,311 INFO L226 Difference]: Without dead ends: 100 [2024-09-12 16:26:36,313 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 467 SyntacticMatches, 13 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=347, Invalid=1459, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 16:26:36,313 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 36 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:36,314 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 299 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:26:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-12 16:26:36,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 89. [2024-09-12 16:26:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 58 states have internal predecessors, (64), 17 states have call successors, (17), 8 states have call predecessors, (17), 14 states have return successors, (31), 22 states have call predecessors, (31), 16 states have call successors, (31) [2024-09-12 16:26:36,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 112 transitions. [2024-09-12 16:26:36,331 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 112 transitions. Word has length 212 [2024-09-12 16:26:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:36,333 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 112 transitions. [2024-09-12 16:26:36,333 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (24), 2 states have call predecessors, (24), 14 states have return successors, (37), 13 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-12 16:26:36,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:36,333 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 112 transitions. [2024-09-12 16:26:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-09-12 16:26:36,334 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:36,335 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 23, 19, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:36,348 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:36,538 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 16:26:36,539 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:36,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:36,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1614501087, now seen corresponding path program 10 times [2024-09-12 16:26:36,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:36,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129022567] [2024-09-12 16:26:36,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:36,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-12 16:26:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 16:26:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:26:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 16:26:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 16:26:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:26:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 16:26:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 16:26:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 16:26:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 16:26:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:36,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 16:26:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:26:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 16:26:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 16:26:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 16:26:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 16:26:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 228 proven. 519 refuted. 0 times theorem prover too weak. 3582 trivial. 0 not checked. [2024-09-12 16:26:37,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:37,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129022567] [2024-09-12 16:26:37,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129022567] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:37,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904576584] [2024-09-12 16:26:37,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 16:26:37,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:37,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:37,011 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:37,012 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 16:26:37,284 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 16:26:37,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:37,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 16:26:37,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 234 proven. 507 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2024-09-12 16:26:37,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 234 proven. 522 refuted. 0 times theorem prover too weak. 3573 trivial. 0 not checked. [2024-09-12 16:26:38,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904576584] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:38,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:38,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 15 [2024-09-12 16:26:38,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685771459] [2024-09-12 16:26:38,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:38,035 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 16:26:38,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:38,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 16:26:38,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-09-12 16:26:38,036 INFO L87 Difference]: Start difference. First operand 89 states and 112 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (19), 7 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-12 16:26:38,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:38,136 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2024-09-12 16:26:38,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 16:26:38,136 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (19), 7 states have call predecessors, (19), 11 states have call successors, (19) Word has length 284 [2024-09-12 16:26:38,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:38,137 INFO L225 Difference]: With dead ends: 92 [2024-09-12 16:26:38,137 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 16:26:38,138 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 642 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2024-09-12 16:26:38,138 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:26:38,138 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 139 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:26:38,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 16:26:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 16:26:38,139 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 16:26:38,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 16:26:38,139 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 284 [2024-09-12 16:26:38,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:38,139 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 16:26:38,139 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (19), 7 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-12 16:26:38,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:38,140 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 16:26:38,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 16:26:38,142 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-12 16:26:38,161 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:38,343 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:38,346 INFO L408 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2024-09-12 16:26:38,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 16:27:12,248 WARN L293 SmtUtils]: Spent 10.46s on a formula simplification. DAG size of input: 225 DAG size of output: 291 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-12 16:27:32,381 WARN L293 SmtUtils]: Spent 12.49s on a formula simplification. DAG size of input: 210 DAG size of output: 291 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-12 16:27:44,538 WARN L293 SmtUtils]: Spent 12.09s on a formula simplification. DAG size of input: 206 DAG size of output: 279 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-12 16:27:49,504 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-12 16:27:49,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 04:27:49 BoogieIcfgContainer [2024-09-12 16:27:49,531 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-12 16:27:49,531 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-12 16:27:49,531 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-12 16:27:49,531 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-12 16:27:49,532 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:26:03" (3/4) ... [2024-09-12 16:27:49,533 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-12 16:27:49,535 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-12 16:27:49,536 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2024-09-12 16:27:49,536 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-12 16:27:49,540 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-09-12 16:27:49,540 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-09-12 16:27:49,540 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-09-12 16:27:49,540 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-12 16:27:49,605 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-12 16:27:49,605 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-12 16:27:49,605 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-12 16:27:49,606 INFO L158 Benchmark]: Toolchain (without parser) took 107045.53ms. Allocated memory was 67.1MB in the beginning and 966.8MB in the end (delta: 899.7MB). Free memory was 32.1MB in the beginning and 914.1MB in the end (delta: -882.0MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2024-09-12 16:27:49,606 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 50.3MB. Free memory is still 33.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:27:49,606 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.28ms. Allocated memory is still 67.1MB. Free memory was 31.9MB in the beginning and 38.6MB in the end (delta: -6.7MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2024-09-12 16:27:49,606 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.55ms. Allocated memory is still 67.1MB. Free memory was 38.6MB in the beginning and 37.7MB in the end (delta: 912.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 16:27:49,607 INFO L158 Benchmark]: Boogie Preprocessor took 32.18ms. Allocated memory is still 67.1MB. Free memory was 37.7MB in the beginning and 36.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 16:27:49,607 INFO L158 Benchmark]: RCFGBuilder took 257.02ms. Allocated memory is still 67.1MB. Free memory was 36.0MB in the beginning and 45.4MB in the end (delta: -9.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-12 16:27:49,608 INFO L158 Benchmark]: TraceAbstraction took 106460.76ms. Allocated memory was 67.1MB in the beginning and 966.8MB in the end (delta: 899.7MB). Free memory was 44.8MB in the beginning and 918.3MB in the end (delta: -873.5MB). Peak memory consumption was 598.3MB. Max. memory is 16.1GB. [2024-09-12 16:27:49,608 INFO L158 Benchmark]: Witness Printer took 74.38ms. Allocated memory is still 966.8MB. Free memory was 918.3MB in the beginning and 914.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-12 16:27:49,609 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 50.3MB. Free memory is still 33.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.28ms. Allocated memory is still 67.1MB. Free memory was 31.9MB in the beginning and 38.6MB in the end (delta: -6.7MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.55ms. Allocated memory is still 67.1MB. Free memory was 38.6MB in the beginning and 37.7MB in the end (delta: 912.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.18ms. Allocated memory is still 67.1MB. Free memory was 37.7MB in the beginning and 36.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 257.02ms. Allocated memory is still 67.1MB. Free memory was 36.0MB in the beginning and 45.4MB in the end (delta: -9.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 106460.76ms. Allocated memory was 67.1MB in the beginning and 966.8MB in the end (delta: 899.7MB). Free memory was 44.8MB in the beginning and 918.3MB in the end (delta: -873.5MB). Peak memory consumption was 598.3MB. Max. memory is 16.1GB. * Witness Printer took 74.38ms. Allocated memory is still 966.8MB. Free memory was 918.3MB in the beginning and 914.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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: 45]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 35.2s, OverallIterations: 12, TraceHistogramMax: 42, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 615 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 560 mSDsluCounter, 3082 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2713 mSDsCounter, 719 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7233 IncrementalHoareTripleChecker+Invalid, 7952 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 719 mSolverCounterUnsat, 369 mSDtfsCounter, 7233 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4363 GetRequests, 3743 SyntacticMatches, 92 SemanticMatches, 528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7591 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=10, InterpolantAutomatonStates: 332, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 172 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 24.8s InterpolantComputationTime, 3417 NumberOfCodeBlocks, 3277 NumberOfCodeBlocksAsserted, 83 NumberOfCheckSat, 5084 ConstructedInterpolants, 0 QuantifiedInterpolants, 9354 SizeOfPredicates, 48 NumberOfNonLiveVariables, 4685 ConjunctsInSsa, 295 ConjunctsInUnsatCore, 34 InterpolantComputations, 1 PerfectInterpolantSequences, 39778/49815 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: 16]: Procedure Contract for ackermann Derived contract for procedure ackermann. Ensures: (((((((((((((((((\result == 5) && (\old(n) == 3)) || (((\result == 3) && (\old(n) == 1)) && (\old(m) == 1))) || (\old(m) == 0)) || (((2 <= \old(m)) && (3 <= \old(n))) && (5 <= \result))) || (((\old(n) == 0) && (\result == 2)) && (\old(m) == 1))) || (((2 <= \old(m)) && (2 <= \old(n))) && (\result == 7))) || ((\result == 5) && (\old(n) == 1))) || (((\result == 7) && (5 <= \old(n))) && (\old(m) == 1))) || (((\old(n) == 0) && (2 <= \old(m))) && (\result == 3))) || ((\result == 6) && (\old(n) == 4))) || (((5 <= \result) && (6 <= \old(n))) && (\old(m) == 1))) || (((\result == 4) && (\old(n) == 2)) && (\old(m) == 1))) || ((3 <= \old(m)) && (3 <= \result))) && ((0 < \old(m)) || (\result == ((long long) \old(n) + 1)))) && (((((\result == 3) && (\old(m) == 1)) || (1 < \old(m))) || (\result == 2)) || (\old(n) != 1))) && (((\old(m) == 0) || (\old(n) == 0)) || (0 < \old(n)))) RESULT: Ultimate proved your program to be correct! [2024-09-12 16:27:49,637 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE