./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/jm2006.c.i.v+cfa-reducer.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 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --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/loop-lit/jm2006.c.i.v+cfa-reducer.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 d85bf43cff1a30e10d1e3bbf4675032df62c31f758d5324913387f5dfb870a68 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 18:06:05,889 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 18:06:05,974 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 18:06:05,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 18:06:05,983 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 18:06:06,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 18:06:06,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 18:06:06,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 18:06:06,023 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 18:06:06,023 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 18:06:06,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 18:06:06,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 18:06:06,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 18:06:06,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 18:06:06,025 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 18:06:06,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 18:06:06,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 18:06:06,034 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 18:06:06,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 18:06:06,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 18:06:06,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 18:06:06,036 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 18:06:06,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 18:06:06,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 18:06:06,038 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 18:06:06,038 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 18:06:06,039 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 18:06:06,039 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 18:06:06,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 18:06:06,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 18:06:06,040 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 18:06:06,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 18:06:06,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:06:06,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 18:06:06,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 18:06:06,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 18:06:06,042 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 18:06:06,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 18:06:06,043 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 18:06:06,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 18:06:06,044 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 18:06:06,045 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 18:06:06,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d85bf43cff1a30e10d1e3bbf4675032df62c31f758d5324913387f5dfb870a68 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 18:06:06,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 18:06:06,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 18:06:06,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 18:06:06,448 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 18:06:06,449 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 18:06:06,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-lit/jm2006.c.i.v+cfa-reducer.c [2024-09-12 18:06:08,143 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 18:06:08,417 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 18:06:08,418 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/jm2006.c.i.v+cfa-reducer.c [2024-09-12 18:06:08,430 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/258d98539/fb8ff0bee0a94ea5a832c3772bd9c077/FLAG9b7c02e86 [2024-09-12 18:06:08,747 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/258d98539/fb8ff0bee0a94ea5a832c3772bd9c077 [2024-09-12 18:06:08,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 18:06:08,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 18:06:08,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 18:06:08,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 18:06:08,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 18:06:08,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:06:08" (1/1) ... [2024-09-12 18:06:08,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a383c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:08, skipping insertion in model container [2024-09-12 18:06:08,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:06:08" (1/1) ... [2024-09-12 18:06:08,785 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 18:06:08,951 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/loop-lit/jm2006.c.i.v+cfa-reducer.c[1110,1123] [2024-09-12 18:06:08,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:06:08,968 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 18:06:08,986 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/loop-lit/jm2006.c.i.v+cfa-reducer.c[1110,1123] [2024-09-12 18:06:08,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:06:09,020 INFO L204 MainTranslator]: Completed translation [2024-09-12 18:06:09,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:09 WrapperNode [2024-09-12 18:06:09,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 18:06:09,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 18:06:09,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 18:06:09,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 18:06:09,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:09" (1/1) ... [2024-09-12 18:06:09,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:09" (1/1) ... [2024-09-12 18:06:09,041 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 18:06:09,042 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 18:06:09,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 18:06:09,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 18:06:09,044 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 18:06:09,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:09" (1/1) ... [2024-09-12 18:06:09,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:09" (1/1) ... [2024-09-12 18:06:09,057 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:09" (1/1) ... [2024-09-12 18:06:09,075 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 18:06:09,075 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:09" (1/1) ... [2024-09-12 18:06:09,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:09" (1/1) ... [2024-09-12 18:06:09,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:09" (1/1) ... [2024-09-12 18:06:09,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:09" (1/1) ... [2024-09-12 18:06:09,085 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:09" (1/1) ... [2024-09-12 18:06:09,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:09" (1/1) ... [2024-09-12 18:06:09,088 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 18:06:09,089 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 18:06:09,092 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 18:06:09,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 18:06:09,093 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:09" (1/1) ... [2024-09-12 18:06:09,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:06:09,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:06:09,133 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 18:06:09,137 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 18:06:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 18:06:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 18:06:09,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 18:06:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 18:06:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 18:06:09,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 18:06:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 18:06:09,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 18:06:09,245 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 18:06:09,247 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 18:06:09,429 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-09-12 18:06:09,430 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 18:06:09,462 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 18:06:09,463 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-12 18:06:09,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:06:09 BoogieIcfgContainer [2024-09-12 18:06:09,464 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 18:06:09,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 18:06:09,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 18:06:09,472 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 18:06:09,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 06:06:08" (1/3) ... [2024-09-12 18:06:09,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0e9662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:06:09, skipping insertion in model container [2024-09-12 18:06:09,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:06:09" (2/3) ... [2024-09-12 18:06:09,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0e9662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:06:09, skipping insertion in model container [2024-09-12 18:06:09,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:06:09" (3/3) ... [2024-09-12 18:06:09,478 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2024-09-12 18:06:09,495 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 18:06:09,496 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-09-12 18:06:09,566 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 18:06:09,575 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;@2f9c656b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 18:06:09,576 INFO L337 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-09-12 18:06:09,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:06:09,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-12 18:06:09,588 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:09,589 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:09,589 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:09,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:09,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2017224924, now seen corresponding path program 1 times [2024-09-12 18:06:09,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:09,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668759338] [2024-09-12 18:06:09,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:09,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:09,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:09,871 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 18:06:09,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:09,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668759338] [2024-09-12 18:06:09,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668759338] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:06:09,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:06:09,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:06:09,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959753115] [2024-09-12 18:06:09,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:06:09,889 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:06:09,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:06:09,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:06:09,919 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:10,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:10,099 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-09-12 18:06:10,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:06:10,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-09-12 18:06:10,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:10,113 INFO L225 Difference]: With dead ends: 36 [2024-09-12 18:06:10,113 INFO L226 Difference]: Without dead ends: 23 [2024-09-12 18:06:10,117 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:06:10,124 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 44 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:10,125 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 16 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:06:10,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-12 18:06:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-09-12 18:06:10,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:10,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-09-12 18:06:10,159 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 9 [2024-09-12 18:06:10,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:10,159 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-09-12 18:06:10,159 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:10,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-09-12 18:06:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 18:06:10,161 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:10,161 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:10,162 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 18:06:10,162 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:10,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:10,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1890536847, now seen corresponding path program 1 times [2024-09-12 18:06:10,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:10,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732688309] [2024-09-12 18:06:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:10,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:10,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:10,263 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 18:06:10,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:10,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732688309] [2024-09-12 18:06:10,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732688309] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:06:10,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:06:10,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:06:10,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751121313] [2024-09-12 18:06:10,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:06:10,268 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:06:10,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:10,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:06:10,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:06:10,271 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:10,362 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-09-12 18:06:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:06:10,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-12 18:06:10,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:10,365 INFO L225 Difference]: With dead ends: 22 [2024-09-12 18:06:10,365 INFO L226 Difference]: Without dead ends: 21 [2024-09-12 18:06:10,365 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:06:10,367 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 29 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:10,368 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 10 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:06:10,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-12 18:06:10,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-12 18:06:10,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-12 18:06:10,383 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 10 [2024-09-12 18:06:10,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:10,384 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-12 18:06:10,384 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:10,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-12 18:06:10,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 18:06:10,387 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:10,387 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:10,388 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 18:06:10,389 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:10,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:10,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1522899834, now seen corresponding path program 1 times [2024-09-12 18:06:10,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:10,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615186993] [2024-09-12 18:06:10,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:10,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:10,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:10,510 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 18:06:10,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:10,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615186993] [2024-09-12 18:06:10,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615186993] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:06:10,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:06:10,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:06:10,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504411631] [2024-09-12 18:06:10,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:06:10,516 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:06:10,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:10,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:06:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:06:10,518 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:10,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:10,607 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2024-09-12 18:06:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:06:10,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-12 18:06:10,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:10,610 INFO L225 Difference]: With dead ends: 26 [2024-09-12 18:06:10,611 INFO L226 Difference]: Without dead ends: 25 [2024-09-12 18:06:10,614 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:06:10,615 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 25 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:10,616 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 7 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:06:10,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-12 18:06:10,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-09-12 18:06:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.3125) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:10,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-12 18:06:10,629 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2024-09-12 18:06:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:10,629 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-12 18:06:10,630 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:10,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:10,631 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-12 18:06:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 18:06:10,631 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:10,631 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:10,632 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 18:06:10,632 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:10,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:10,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1522590969, now seen corresponding path program 1 times [2024-09-12 18:06:10,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:10,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967307817] [2024-09-12 18:06:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:10,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:10,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:10,904 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 18:06:10,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:10,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967307817] [2024-09-12 18:06:10,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967307817] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:06:10,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:06:10,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 18:06:10,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255282205] [2024-09-12 18:06:10,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:06:10,911 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:06:10,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:10,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:06:10,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:06:10,912 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:11,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:11,038 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2024-09-12 18:06:11,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:06:11,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-12 18:06:11,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:11,039 INFO L225 Difference]: With dead ends: 27 [2024-09-12 18:06:11,039 INFO L226 Difference]: Without dead ends: 23 [2024-09-12 18:06:11,039 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:06:11,040 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 22 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:11,041 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 13 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:06:11,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-12 18:06:11,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-12 18:06:11,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2024-09-12 18:06:11,050 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2024-09-12 18:06:11,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:11,050 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2024-09-12 18:06:11,050 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:11,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2024-09-12 18:06:11,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 18:06:11,051 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:11,051 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:11,051 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 18:06:11,052 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:11,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:11,052 INFO L85 PathProgramCache]: Analyzing trace with hash 34745457, now seen corresponding path program 1 times [2024-09-12 18:06:11,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:11,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380169943] [2024-09-12 18:06:11,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:11,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:11,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:11,109 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 18:06:11,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:11,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380169943] [2024-09-12 18:06:11,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380169943] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:06:11,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:06:11,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:06:11,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711250304] [2024-09-12 18:06:11,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:06:11,111 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:06:11,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:11,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:06:11,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:06:11,112 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:11,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:11,173 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2024-09-12 18:06:11,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:06:11,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-12 18:06:11,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:11,175 INFO L225 Difference]: With dead ends: 23 [2024-09-12 18:06:11,176 INFO L226 Difference]: Without dead ends: 22 [2024-09-12 18:06:11,176 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:06:11,177 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:11,179 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 10 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:06:11,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-12 18:06:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-12 18:06:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2024-09-12 18:06:11,188 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2024-09-12 18:06:11,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:11,188 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2024-09-12 18:06:11,188 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:11,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:11,189 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2024-09-12 18:06:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-12 18:06:11,190 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:11,190 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:11,190 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 18:06:11,190 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:11,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash -969352685, now seen corresponding path program 1 times [2024-09-12 18:06:11,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:11,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038621278] [2024-09-12 18:06:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:11,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:11,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:11,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:11,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038621278] [2024-09-12 18:06:11,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038621278] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:06:11,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349084690] [2024-09-12 18:06:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:11,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:11,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:06:11,275 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 18:06:11,277 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 18:06:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:11,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:06:11,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:06:11,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:11,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:06:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:11,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349084690] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:06:11,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:06:11,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-09-12 18:06:11,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210631069] [2024-09-12 18:06:11,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:06:11,474 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 18:06:11,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:11,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 18:06:11,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:06:11,476 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:11,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:11,639 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-09-12 18:06:11,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 18:06:11,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-09-12 18:06:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:11,642 INFO L225 Difference]: With dead ends: 38 [2024-09-12 18:06:11,642 INFO L226 Difference]: Without dead ends: 37 [2024-09-12 18:06:11,642 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:06:11,643 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 74 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:11,644 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 13 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:06:11,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-12 18:06:11,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-09-12 18:06:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 31 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-09-12 18:06:11,663 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 14 [2024-09-12 18:06:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:11,664 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-09-12 18:06:11,664 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:11,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:11,664 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-09-12 18:06:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 18:06:11,665 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:11,665 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:11,686 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-12 18:06:11,870 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 18:06:11,871 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:11,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:11,871 INFO L85 PathProgramCache]: Analyzing trace with hash 459974581, now seen corresponding path program 1 times [2024-09-12 18:06:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:11,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31195077] [2024-09-12 18:06:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:11,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:11,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:11,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:11,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31195077] [2024-09-12 18:06:11,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31195077] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:06:11,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49849164] [2024-09-12 18:06:11,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:11,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:11,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:06:11,927 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 18:06:11,929 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 18:06:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:11,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:06:11,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:06:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:11,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:06:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:12,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49849164] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:06:12,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:06:12,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2024-09-12 18:06:12,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8773128] [2024-09-12 18:06:12,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:06:12,054 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 18:06:12,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:12,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 18:06:12,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:06:12,055 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:12,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:12,181 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2024-09-12 18:06:12,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 18:06:12,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-12 18:06:12,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:12,182 INFO L225 Difference]: With dead ends: 41 [2024-09-12 18:06:12,182 INFO L226 Difference]: Without dead ends: 40 [2024-09-12 18:06:12,183 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-09-12 18:06:12,183 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 45 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:12,184 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 10 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:06:12,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-12 18:06:12,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2024-09-12 18:06:12,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 33 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:12,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-09-12 18:06:12,207 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 16 [2024-09-12 18:06:12,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:12,207 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-09-12 18:06:12,208 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:12,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:12,208 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-09-12 18:06:12,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 18:06:12,209 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:12,209 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:12,235 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 18:06:12,409 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 18:06:12,410 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:12,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:12,411 INFO L85 PathProgramCache]: Analyzing trace with hash 460283446, now seen corresponding path program 1 times [2024-09-12 18:06:12,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:12,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818581349] [2024-09-12 18:06:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:12,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:12,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:12,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:12,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818581349] [2024-09-12 18:06:12,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818581349] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:06:12,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140477311] [2024-09-12 18:06:12,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:12,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:12,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:06:12,584 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 18:06:12,589 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 18:06:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:12,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-12 18:06:12,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:06:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:12,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:06:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:12,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140477311] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:06:12,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:06:12,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-09-12 18:06:12,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051809917] [2024-09-12 18:06:12,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:06:12,861 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 18:06:12,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:12,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 18:06:12,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-09-12 18:06:12,862 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:13,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:13,155 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-09-12 18:06:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 18:06:13,155 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-12 18:06:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:13,156 INFO L225 Difference]: With dead ends: 38 [2024-09-12 18:06:13,156 INFO L226 Difference]: Without dead ends: 33 [2024-09-12 18:06:13,157 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2024-09-12 18:06:13,158 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 27 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:13,158 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:06:13,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-12 18:06:13,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-12 18:06:13,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:13,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2024-09-12 18:06:13,176 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 16 [2024-09-12 18:06:13,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:13,176 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2024-09-12 18:06:13,177 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:13,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:13,177 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2024-09-12 18:06:13,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-12 18:06:13,178 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:13,178 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:13,196 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 18:06:13,379 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-12 18:06:13,380 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:13,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2085791260, now seen corresponding path program 2 times [2024-09-12 18:06:13,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:13,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953066494] [2024-09-12 18:06:13,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:13,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:13,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:13,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:13,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953066494] [2024-09-12 18:06:13,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953066494] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:06:13,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304255967] [2024-09-12 18:06:13,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:06:13,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:13,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:06:13,494 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 18:06:13,495 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 18:06:13,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:06:13,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:06:13,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:06:13,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:06:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:13,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:06:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:13,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304255967] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:06:13,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:06:13,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-09-12 18:06:13,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571670506] [2024-09-12 18:06:13,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:06:13,674 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 18:06:13,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:13,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 18:06:13,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-09-12 18:06:13,675 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:13,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:13,939 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2024-09-12 18:06:13,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 18:06:13,940 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-09-12 18:06:13,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:13,941 INFO L225 Difference]: With dead ends: 67 [2024-09-12 18:06:13,941 INFO L226 Difference]: Without dead ends: 66 [2024-09-12 18:06:13,941 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=238, Invalid=412, Unknown=0, NotChecked=0, Total=650 [2024-09-12 18:06:13,942 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 134 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:13,942 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 19 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:06:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-12 18:06:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2024-09-12 18:06:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.125) internal successors, (63), 57 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2024-09-12 18:06:13,969 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 29 [2024-09-12 18:06:13,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:13,970 INFO L474 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2024-09-12 18:06:13,970 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:13,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:13,971 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2024-09-12 18:06:13,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-12 18:06:13,971 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:13,972 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:13,992 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 18:06:14,175 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:14,176 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:14,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:14,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1304328006, now seen corresponding path program 2 times [2024-09-12 18:06:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:14,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723305135] [2024-09-12 18:06:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:14,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:14,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:14,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:14,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723305135] [2024-09-12 18:06:14,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723305135] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:06:14,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182331707] [2024-09-12 18:06:14,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:06:14,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:14,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:06:14,262 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 18:06:14,273 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 18:06:14,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:06:14,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:06:14,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:06:14,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:06:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:14,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:06:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:14,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182331707] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:06:14,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:06:14,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2024-09-12 18:06:14,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906825648] [2024-09-12 18:06:14,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:06:14,455 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 18:06:14,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 18:06:14,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:06:14,456 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 13 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:14,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:14,677 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2024-09-12 18:06:14,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 18:06:14,677 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-09-12 18:06:14,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:14,679 INFO L225 Difference]: With dead ends: 64 [2024-09-12 18:06:14,679 INFO L226 Difference]: Without dead ends: 63 [2024-09-12 18:06:14,679 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2024-09-12 18:06:14,680 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 61 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:14,681 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 16 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:06:14,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-12 18:06:14,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-12 18:06:14,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:14,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2024-09-12 18:06:14,713 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 31 [2024-09-12 18:06:14,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:14,714 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2024-09-12 18:06:14,714 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:14,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:14,715 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2024-09-12 18:06:14,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 18:06:14,718 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:14,719 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:14,738 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 18:06:14,919 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-12 18:06:14,920 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:14,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:14,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2092489220, now seen corresponding path program 3 times [2024-09-12 18:06:14,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:14,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945765801] [2024-09-12 18:06:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:14,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:15,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:15,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:15,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945765801] [2024-09-12 18:06:15,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945765801] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:06:15,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426989487] [2024-09-12 18:06:15,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:06:15,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:15,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:06:15,158 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 18:06:15,159 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 18:06:15,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 18:06:15,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:06:15,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 18:06:15,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:06:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:15,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:06:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:15,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426989487] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:06:15,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:06:15,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2024-09-12 18:06:15,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030514797] [2024-09-12 18:06:15,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:06:15,592 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 18:06:15,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:15,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 18:06:15,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=419, Unknown=0, NotChecked=0, Total=702 [2024-09-12 18:06:15,594 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand has 27 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:16,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:16,214 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2024-09-12 18:06:16,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-12 18:06:16,215 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-09-12 18:06:16,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:16,216 INFO L225 Difference]: With dead ends: 133 [2024-09-12 18:06:16,216 INFO L226 Difference]: Without dead ends: 132 [2024-09-12 18:06:16,217 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=904, Invalid=1546, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 18:06:16,218 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 278 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:16,218 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 22 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:06:16,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-09-12 18:06:16,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 121. [2024-09-12 18:06:16,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.1120689655172413) internal successors, (129), 117 states have internal predecessors, (129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2024-09-12 18:06:16,257 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 59 [2024-09-12 18:06:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:16,258 INFO L474 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2024-09-12 18:06:16,258 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:16,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:16,259 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2024-09-12 18:06:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 18:06:16,261 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:16,261 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:16,283 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 18:06:16,461 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 18:06:16,462 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:16,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:16,463 INFO L85 PathProgramCache]: Analyzing trace with hash 837447526, now seen corresponding path program 3 times [2024-09-12 18:06:16,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:16,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570215277] [2024-09-12 18:06:16,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:16,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:16,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:16,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:16,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570215277] [2024-09-12 18:06:16,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570215277] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:06:16,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421305555] [2024-09-12 18:06:16,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:06:16,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:16,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:06:16,679 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 18:06:16,680 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 18:06:16,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 18:06:16,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:06:16,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 18:06:16,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:06:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:16,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:06:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:17,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421305555] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:06:17,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:06:17,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 24 [2024-09-12 18:06:17,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435289517] [2024-09-12 18:06:17,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:06:17,093 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 18:06:17,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:17,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 18:06:17,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2024-09-12 18:06:17,095 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand has 25 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:17,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:17,556 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2024-09-12 18:06:17,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 18:06:17,557 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2024-09-12 18:06:17,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:17,558 INFO L225 Difference]: With dead ends: 124 [2024-09-12 18:06:17,558 INFO L226 Difference]: Without dead ends: 123 [2024-09-12 18:06:17,559 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 18:06:17,560 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 121 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:17,560 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 19 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:06:17,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-12 18:06:17,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-09-12 18:06:17,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 119 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:17,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2024-09-12 18:06:17,592 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 61 [2024-09-12 18:06:17,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:17,592 INFO L474 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2024-09-12 18:06:17,592 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:17,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2024-09-12 18:06:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-09-12 18:06:17,594 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:17,594 INFO L216 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:17,612 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 18:06:17,795 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:17,795 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:17,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:17,796 INFO L85 PathProgramCache]: Analyzing trace with hash -818089404, now seen corresponding path program 4 times [2024-09-12 18:06:17,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:17,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642200756] [2024-09-12 18:06:17,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:17,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:18,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:18,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:18,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642200756] [2024-09-12 18:06:18,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642200756] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:06:18,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38278937] [2024-09-12 18:06:18,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:06:18,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:18,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:06:18,562 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 18:06:18,563 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 18:06:18,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:06:18,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:06:18,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-12 18:06:18,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:06:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:18,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:06:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:19,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38278937] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:06:19,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:06:19,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 50 [2024-09-12 18:06:19,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423521950] [2024-09-12 18:06:19,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:06:19,720 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-12 18:06:19,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:19,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-12 18:06:19,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1135, Invalid=1415, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 18:06:19,724 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand has 51 states, 50 states have (on average 4.62) internal successors, (231), 50 states have internal predecessors, (231), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:21,354 INFO L93 Difference]: Finished difference Result 265 states and 288 transitions. [2024-09-12 18:06:21,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-12 18:06:21,355 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 4.62) internal successors, (231), 50 states have internal predecessors, (231), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2024-09-12 18:06:21,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:21,356 INFO L225 Difference]: With dead ends: 265 [2024-09-12 18:06:21,357 INFO L226 Difference]: Without dead ends: 264 [2024-09-12 18:06:21,359 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3532, Invalid=5974, Unknown=0, NotChecked=0, Total=9506 [2024-09-12 18:06:21,360 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 588 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:21,360 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 28 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:06:21,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-12 18:06:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 241. [2024-09-12 18:06:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 236 states have (on average 1.1059322033898304) internal successors, (261), 237 states have internal predecessors, (261), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 264 transitions. [2024-09-12 18:06:21,423 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 264 transitions. Word has length 119 [2024-09-12 18:06:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:21,424 INFO L474 AbstractCegarLoop]: Abstraction has 241 states and 264 transitions. [2024-09-12 18:06:21,425 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 4.62) internal successors, (231), 50 states have internal predecessors, (231), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:21,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:21,425 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 264 transitions. [2024-09-12 18:06:21,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-12 18:06:21,430 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:21,430 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:21,451 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-12 18:06:21,631 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:21,631 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:21,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:21,632 INFO L85 PathProgramCache]: Analyzing trace with hash -204900442, now seen corresponding path program 4 times [2024-09-12 18:06:21,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:21,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131658636] [2024-09-12 18:06:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:21,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:22,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:22,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:22,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131658636] [2024-09-12 18:06:22,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131658636] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:06:22,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846815728] [2024-09-12 18:06:22,297 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:06:22,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:22,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:06:22,300 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 18:06:22,303 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 18:06:22,398 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:06:22,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:06:22,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-12 18:06:22,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:06:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:22,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:06:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:23,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846815728] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:06:23,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:06:23,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 48 [2024-09-12 18:06:23,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510877581] [2024-09-12 18:06:23,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:06:23,266 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-12 18:06:23,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:23,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-12 18:06:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 18:06:23,269 INFO L87 Difference]: Start difference. First operand 241 states and 264 transitions. Second operand has 49 states, 48 states have (on average 4.875) internal successors, (234), 48 states have internal predecessors, (234), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:24,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:24,454 INFO L93 Difference]: Finished difference Result 244 states and 267 transitions. [2024-09-12 18:06:24,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-12 18:06:24,455 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 4.875) internal successors, (234), 48 states have internal predecessors, (234), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2024-09-12 18:06:24,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:24,456 INFO L225 Difference]: With dead ends: 244 [2024-09-12 18:06:24,456 INFO L226 Difference]: Without dead ends: 243 [2024-09-12 18:06:24,459 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2024-09-12 18:06:24,459 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 241 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:24,460 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 16 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:06:24,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-12 18:06:24,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-09-12 18:06:24,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 239 states have internal predecessors, (240), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:24,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2024-09-12 18:06:24,515 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 121 [2024-09-12 18:06:24,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:24,516 INFO L474 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2024-09-12 18:06:24,516 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 4.875) internal successors, (234), 48 states have internal predecessors, (234), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:24,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:24,517 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2024-09-12 18:06:24,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-09-12 18:06:24,519 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:24,519 INFO L216 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:24,534 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 18:06:24,721 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 18:06:24,722 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:24,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:24,722 INFO L85 PathProgramCache]: Analyzing trace with hash 363954884, now seen corresponding path program 5 times [2024-09-12 18:06:24,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:24,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114010672] [2024-09-12 18:06:24,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:24,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:26,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:26,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:26,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114010672] [2024-09-12 18:06:26,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114010672] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:06:26,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953724708] [2024-09-12 18:06:26,677 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:06:26,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:26,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:06:26,680 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 18:06:26,682 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 18:06:26,875 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-09-12 18:06:26,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:06:26,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-12 18:06:26,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:06:27,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:27,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:06:29,670 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:29,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953724708] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:06:29,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:06:29,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 98 [2024-09-12 18:06:29,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898613580] [2024-09-12 18:06:29,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:06:29,672 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-09-12 18:06:29,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:29,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-09-12 18:06:29,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4567, Invalid=5135, Unknown=0, NotChecked=0, Total=9702 [2024-09-12 18:06:29,676 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand has 99 states, 98 states have (on average 4.8061224489795915) internal successors, (471), 98 states have internal predecessors, (471), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:33,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:33,919 INFO L93 Difference]: Finished difference Result 529 states and 576 transitions. [2024-09-12 18:06:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-09-12 18:06:33,920 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 4.8061224489795915) internal successors, (471), 98 states have internal predecessors, (471), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2024-09-12 18:06:33,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:33,923 INFO L225 Difference]: With dead ends: 529 [2024-09-12 18:06:33,923 INFO L226 Difference]: Without dead ends: 528 [2024-09-12 18:06:33,930 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5637 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=13972, Invalid=23470, Unknown=0, NotChecked=0, Total=37442 [2024-09-12 18:06:33,930 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 1207 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:33,930 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 25 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 18:06:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-09-12 18:06:34,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 481. [2024-09-12 18:06:34,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 476 states have (on average 1.1029411764705883) internal successors, (525), 477 states have internal predecessors, (525), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 528 transitions. [2024-09-12 18:06:34,016 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 528 transitions. Word has length 239 [2024-09-12 18:06:34,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:34,016 INFO L474 AbstractCegarLoop]: Abstraction has 481 states and 528 transitions. [2024-09-12 18:06:34,017 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 4.8061224489795915) internal successors, (471), 98 states have internal predecessors, (471), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:34,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:34,017 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 528 transitions. [2024-09-12 18:06:34,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-09-12 18:06:34,020 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:34,020 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:34,035 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 18:06:34,220 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 18:06:34,221 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:34,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:34,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1868294182, now seen corresponding path program 5 times [2024-09-12 18:06:34,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:34,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882416305] [2024-09-12 18:06:34,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:34,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:36,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:36,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:36,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882416305] [2024-09-12 18:06:36,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882416305] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:06:36,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010807726] [2024-09-12 18:06:36,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:06:36,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:36,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:06:36,120 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 18:06:36,122 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 18:06:36,327 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-09-12 18:06:36,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:06:36,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-12 18:06:36,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:06:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:36,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:06:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:39,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010807726] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:06:39,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:06:39,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 96 [2024-09-12 18:06:39,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776793469] [2024-09-12 18:06:39,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:06:39,108 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-09-12 18:06:39,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:06:39,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-09-12 18:06:39,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2024-09-12 18:06:39,113 INFO L87 Difference]: Start difference. First operand 481 states and 528 transitions. Second operand has 97 states, 96 states have (on average 4.9375) internal successors, (474), 96 states have internal predecessors, (474), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:43,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:06:43,027 INFO L93 Difference]: Finished difference Result 484 states and 531 transitions. [2024-09-12 18:06:43,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-09-12 18:06:43,027 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 4.9375) internal successors, (474), 96 states have internal predecessors, (474), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 241 [2024-09-12 18:06:43,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:06:43,030 INFO L225 Difference]: With dead ends: 484 [2024-09-12 18:06:43,030 INFO L226 Difference]: Without dead ends: 483 [2024-09-12 18:06:43,034 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5452 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2024-09-12 18:06:43,035 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 481 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:06:43,035 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 28 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 18:06:43,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-09-12 18:06:43,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2024-09-12 18:06:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 478 states have (on average 1.00418410041841) internal successors, (480), 479 states have internal predecessors, (480), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:43,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 483 transitions. [2024-09-12 18:06:43,138 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 483 transitions. Word has length 241 [2024-09-12 18:06:43,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:06:43,139 INFO L474 AbstractCegarLoop]: Abstraction has 483 states and 483 transitions. [2024-09-12 18:06:43,139 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 4.9375) internal successors, (474), 96 states have internal predecessors, (474), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:06:43,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 483 transitions. [2024-09-12 18:06:43,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-09-12 18:06:43,146 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:06:43,146 INFO L216 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:06:43,166 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 18:06:43,347 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 18:06:43,347 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:06:43,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:06:43,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1242309572, now seen corresponding path program 6 times [2024-09-12 18:06:43,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:06:43,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614677287] [2024-09-12 18:06:43,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:06:43,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:06:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:49,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:06:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:06:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:49,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:06:49,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614677287] [2024-09-12 18:06:49,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614677287] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:06:49,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617222707] [2024-09-12 18:06:49,988 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:06:49,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:06:49,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:06:49,990 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:06:49,991 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 18:06:50,389 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2024-09-12 18:06:50,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:06:50,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-09-12 18:06:50,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:06:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:06:50,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:07:00,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:07:00,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617222707] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:07:00,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:07:00,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97, 97] total 194 [2024-09-12 18:07:00,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905265392] [2024-09-12 18:07:00,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:07:00,380 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 195 states [2024-09-12 18:07:00,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:07:00,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2024-09-12 18:07:00,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18343, Invalid=19487, Unknown=0, NotChecked=0, Total=37830 [2024-09-12 18:07:00,388 INFO L87 Difference]: Start difference. First operand 483 states and 483 transitions. Second operand has 195 states, 194 states have (on average 4.902061855670103) internal successors, (951), 194 states have internal predecessors, (951), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:07:15,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:07:15,882 INFO L93 Difference]: Finished difference Result 1057 states and 1152 transitions. [2024-09-12 18:07:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2024-09-12 18:07:15,883 INFO L78 Accepts]: Start accepts. Automaton has has 195 states, 194 states have (on average 4.902061855670103) internal successors, (951), 194 states have internal predecessors, (951), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 479 [2024-09-12 18:07:15,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:07:15,888 INFO L225 Difference]: With dead ends: 1057 [2024-09-12 18:07:15,888 INFO L226 Difference]: Without dead ends: 1056 [2024-09-12 18:07:15,895 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1247 GetRequests, 863 SyntacticMatches, 0 SemanticMatches, 384 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22797 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=55588, Invalid=93022, Unknown=0, NotChecked=0, Total=148610 [2024-09-12 18:07:15,896 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 2438 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 18:07:15,896 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2438 Valid, 37 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 18:07:15,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2024-09-12 18:07:16,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 961. [2024-09-12 18:07:16,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 956 states have (on average 1.1014644351464435) internal successors, (1053), 957 states have internal predecessors, (1053), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:07:16,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1056 transitions. [2024-09-12 18:07:16,071 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1056 transitions. Word has length 479 [2024-09-12 18:07:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:07:16,072 INFO L474 AbstractCegarLoop]: Abstraction has 961 states and 1056 transitions. [2024-09-12 18:07:16,073 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 195 states, 194 states have (on average 4.902061855670103) internal successors, (951), 194 states have internal predecessors, (951), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:07:16,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:07:16,073 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1056 transitions. [2024-09-12 18:07:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-09-12 18:07:16,081 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:07:16,081 INFO L216 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:07:16,101 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-12 18:07:16,281 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 18:07:16,282 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:07:16,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:07:16,283 INFO L85 PathProgramCache]: Analyzing trace with hash -141407962, now seen corresponding path program 6 times [2024-09-12 18:07:16,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:07:16,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320465468] [2024-09-12 18:07:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:07:16,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:07:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:07:22,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:07:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:07:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:07:22,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:07:22,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320465468] [2024-09-12 18:07:22,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320465468] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:07:22,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712674236] [2024-09-12 18:07:22,348 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:07:22,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:07:22,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:07:22,351 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:07:22,352 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 18:07:22,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2024-09-12 18:07:22,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:07:22,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-09-12 18:07:22,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:07:23,233 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:07:23,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:07:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:07:32,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712674236] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:07:32,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:07:32,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96, 96] total 192 [2024-09-12 18:07:32,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713889968] [2024-09-12 18:07:32,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:07:32,506 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-09-12 18:07:32,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:07:32,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-09-12 18:07:32,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18338, Invalid=18718, Unknown=0, NotChecked=0, Total=37056 [2024-09-12 18:07:32,515 INFO L87 Difference]: Start difference. First operand 961 states and 1056 transitions. Second operand has 193 states, 192 states have (on average 4.96875) internal successors, (954), 192 states have internal predecessors, (954), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:07:46,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:07:46,679 INFO L93 Difference]: Finished difference Result 964 states and 1059 transitions. [2024-09-12 18:07:46,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2024-09-12 18:07:46,680 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 192 states have (on average 4.96875) internal successors, (954), 192 states have internal predecessors, (954), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 481 [2024-09-12 18:07:46,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:07:46,685 INFO L225 Difference]: With dead ends: 964 [2024-09-12 18:07:46,685 INFO L226 Difference]: Without dead ends: 963 [2024-09-12 18:07:46,695 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1249 GetRequests, 868 SyntacticMatches, 0 SemanticMatches, 381 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22420 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=55008, Invalid=91298, Unknown=0, NotChecked=0, Total=146306 [2024-09-12 18:07:46,696 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 961 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 18:07:46,696 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 22 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 18:07:46,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2024-09-12 18:07:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2024-09-12 18:07:46,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 958 states have (on average 1.0020876826722338) internal successors, (960), 959 states have internal predecessors, (960), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:07:46,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 963 transitions. [2024-09-12 18:07:46,845 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 963 transitions. Word has length 481 [2024-09-12 18:07:46,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:07:46,845 INFO L474 AbstractCegarLoop]: Abstraction has 963 states and 963 transitions. [2024-09-12 18:07:46,846 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 192 states have (on average 4.96875) internal successors, (954), 192 states have internal predecessors, (954), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:07:46,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:07:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 963 transitions. [2024-09-12 18:07:46,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2024-09-12 18:07:46,854 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:07:46,855 INFO L216 NwaCegarLoop]: trace histogram [191, 190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:07:46,874 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-12 18:07:47,055 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 18:07:47,056 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:07:47,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:07:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1635293756, now seen corresponding path program 7 times [2024-09-12 18:07:47,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:07:47,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773113312] [2024-09-12 18:07:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:07:47,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:07:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:08:11,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:08:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:08:11,452 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:08:11,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:08:11,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773113312] [2024-09-12 18:08:11,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773113312] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:08:11,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171002332] [2024-09-12 18:08:11,452 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:08:11,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:08:11,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:08:11,454 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:08:11,455 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 18:08:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:08:11,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 2524 conjuncts, 193 conjuncts are in the unsatisfiable core [2024-09-12 18:08:11,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:08:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:08:12,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:08:49,539 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:08:49,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171002332] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:08:49,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:08:49,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [194, 193, 193] total 386 [2024-09-12 18:08:49,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405313783] [2024-09-12 18:08:49,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:08:49,542 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 387 states [2024-09-12 18:08:49,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:08:49,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 387 interpolants. [2024-09-12 18:08:49,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73543, Invalid=75839, Unknown=0, NotChecked=0, Total=149382 [2024-09-12 18:08:49,567 INFO L87 Difference]: Start difference. First operand 963 states and 963 transitions. Second operand has 387 states, 386 states have (on average 4.950777202072539) internal successors, (1911), 386 states have internal predecessors, (1911), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:09:53,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:09:53,313 INFO L93 Difference]: Finished difference Result 2113 states and 2304 transitions. [2024-09-12 18:09:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 386 states. [2024-09-12 18:09:53,314 INFO L78 Accepts]: Start accepts. Automaton has has 387 states, 386 states have (on average 4.950777202072539) internal successors, (1911), 386 states have internal predecessors, (1911), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 959 [2024-09-12 18:09:53,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:09:53,323 INFO L225 Difference]: With dead ends: 2113 [2024-09-12 18:09:53,323 INFO L226 Difference]: Without dead ends: 2112 [2024-09-12 18:09:53,359 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2495 GetRequests, 1727 SyntacticMatches, 0 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91677 ImplicationChecksByTransitivity, 99.5s TimeCoverageRelationStatistics Valid=221764, Invalid=370366, Unknown=0, NotChecked=0, Total=592130 [2024-09-12 18:09:53,360 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 7338 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7338 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:09:53,360 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7338 Valid, 19 Invalid, 2137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-12 18:09:53,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2024-09-12 18:09:53,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1921. [2024-09-12 18:09:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1916 states have (on average 1.100730688935282) internal successors, (2109), 1917 states have internal predecessors, (2109), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:09:53,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 2112 transitions. [2024-09-12 18:09:53,707 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 2112 transitions. Word has length 959 [2024-09-12 18:09:53,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:09:53,708 INFO L474 AbstractCegarLoop]: Abstraction has 1921 states and 2112 transitions. [2024-09-12 18:09:53,709 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 387 states, 386 states have (on average 4.950777202072539) internal successors, (1911), 386 states have internal predecessors, (1911), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:09:53,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:09:53,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 2112 transitions. [2024-09-12 18:09:53,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2024-09-12 18:09:53,718 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:09:53,718 INFO L216 NwaCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:09:53,742 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-12 18:09:53,919 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:09:53,919 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:09:53,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:09:53,920 INFO L85 PathProgramCache]: Analyzing trace with hash 440732454, now seen corresponding path program 7 times [2024-09-12 18:09:53,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:09:53,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275003792] [2024-09-12 18:09:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:09:53,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:09:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat