./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/EvenOdd01-1.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/recursive/EvenOdd01-1.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 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc --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 19:48:19,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 19:48:19,616 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 19:48:19,620 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 19:48:19,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 19:48:19,646 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 19:48:19,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 19:48:19,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 19:48:19,649 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 19:48:19,649 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 19:48:19,649 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 19:48:19,649 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 19:48:19,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 19:48:19,652 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 19:48:19,652 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 19:48:19,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 19:48:19,653 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 19:48:19,653 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 19:48:19,653 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 19:48:19,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 19:48:19,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 19:48:19,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 19:48:19,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 19:48:19,659 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 19:48:19,659 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 19:48:19,659 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 19:48:19,659 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 19:48:19,659 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 19:48:19,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 19:48:19,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 19:48:19,660 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 19:48:19,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 19:48:19,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 19:48:19,660 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 19:48:19,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 19:48:19,661 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 19:48:19,661 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 19:48:19,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 19:48:19,662 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 19:48:19,662 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 19:48:19,662 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 19:48:19,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 19:48:19,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 19:48:19,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 19:48:19,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 19:48:19,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 19:48:19,932 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 19:48:19,933 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 19:48:19,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-09-12 19:48:21,157 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 19:48:21,320 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 19:48:21,321 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-09-12 19:48:21,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9fa578b7e/ae66b24298b64820a3e88829c96ffde6/FLAG0302a1a46 [2024-09-12 19:48:21,710 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9fa578b7e/ae66b24298b64820a3e88829c96ffde6 [2024-09-12 19:48:21,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 19:48:21,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 19:48:21,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 19:48:21,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 19:48:21,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 19:48:21,718 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 07:48:21" (1/1) ... [2024-09-12 19:48:21,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4d8b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21, skipping insertion in model container [2024-09-12 19:48:21,719 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 07:48:21" (1/1) ... [2024-09-12 19:48:21,732 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 19:48:21,851 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/EvenOdd01-1.c[975,988] [2024-09-12 19:48:21,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 19:48:21,859 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 19:48:21,869 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/EvenOdd01-1.c[975,988] [2024-09-12 19:48:21,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 19:48:21,881 INFO L204 MainTranslator]: Completed translation [2024-09-12 19:48:21,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21 WrapperNode [2024-09-12 19:48:21,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 19:48:21,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 19:48:21,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 19:48:21,883 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 19:48:21,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21" (1/1) ... [2024-09-12 19:48:21,891 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21" (1/1) ... [2024-09-12 19:48:21,895 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 19:48:21,895 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 19:48:21,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 19:48:21,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 19:48:21,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 19:48:21,906 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21" (1/1) ... [2024-09-12 19:48:21,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21" (1/1) ... [2024-09-12 19:48:21,908 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21" (1/1) ... [2024-09-12 19:48:21,916 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 19:48:21,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21" (1/1) ... [2024-09-12 19:48:21,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21" (1/1) ... [2024-09-12 19:48:21,919 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21" (1/1) ... [2024-09-12 19:48:21,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21" (1/1) ... [2024-09-12 19:48:21,920 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21" (1/1) ... [2024-09-12 19:48:21,921 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21" (1/1) ... [2024-09-12 19:48:21,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 19:48:21,922 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 19:48:21,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 19:48:21,923 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 19:48:21,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21" (1/1) ... [2024-09-12 19:48:21,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 19:48:21,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:21,947 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 19:48:21,949 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 19:48:21,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 19:48:21,980 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2024-09-12 19:48:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2024-09-12 19:48:21,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 19:48:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 19:48:21,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 19:48:21,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 19:48:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 19:48:21,980 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2024-09-12 19:48:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2024-09-12 19:48:21,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 19:48:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 19:48:22,048 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 19:48:22,052 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 19:48:22,177 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-09-12 19:48:22,177 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 19:48:22,192 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 19:48:22,192 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-12 19:48:22,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:48:22 BoogieIcfgContainer [2024-09-12 19:48:22,193 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 19:48:22,195 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 19:48:22,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 19:48:22,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 19:48:22,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 07:48:21" (1/3) ... [2024-09-12 19:48:22,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbdde16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 07:48:22, skipping insertion in model container [2024-09-12 19:48:22,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:48:21" (2/3) ... [2024-09-12 19:48:22,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbdde16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 07:48:22, skipping insertion in model container [2024-09-12 19:48:22,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:48:22" (3/3) ... [2024-09-12 19:48:22,200 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2024-09-12 19:48:22,213 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 19:48:22,213 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-09-12 19:48:22,258 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 19:48:22,264 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;@2d18df0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 19:48:22,265 INFO L337 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-09-12 19:48:22,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 22 states have (on average 1.5) internal successors, (33), 27 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:48:22,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 19:48:22,273 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:22,274 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:22,275 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:22,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1045843829, now seen corresponding path program 1 times [2024-09-12 19:48:22,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:22,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892886273] [2024-09-12 19:48:22,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:22,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:22,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:22,484 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 19:48:22,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:22,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892886273] [2024-09-12 19:48:22,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892886273] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:48:22,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:48:22,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:48:22,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27283511] [2024-09-12 19:48:22,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:48:22,498 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:48:22,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:22,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:48:22,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:48:22,521 INFO L87 Difference]: Start difference. First operand has 37 states, 22 states have (on average 1.5) internal successors, (33), 27 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:48:22,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:22,627 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2024-09-12 19:48:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:48:22,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-12 19:48:22,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:22,634 INFO L225 Difference]: With dead ends: 54 [2024-09-12 19:48:22,634 INFO L226 Difference]: Without dead ends: 45 [2024-09-12 19:48:22,636 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 19:48:22,638 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 14 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:22,639 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 127 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:48:22,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-12 19:48:22,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2024-09-12 19:48:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 31 states have internal predecessors, (38), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:48:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2024-09-12 19:48:22,665 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 11 [2024-09-12 19:48:22,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:22,666 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2024-09-12 19:48:22,666 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:48:22,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:22,667 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2024-09-12 19:48:22,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 19:48:22,667 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:22,667 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:22,667 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 19:48:22,668 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:22,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:22,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1938579609, now seen corresponding path program 1 times [2024-09-12 19:48:22,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:22,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040929127] [2024-09-12 19:48:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:22,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:22,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:22,739 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 19:48:22,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:22,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040929127] [2024-09-12 19:48:22,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040929127] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:48:22,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:48:22,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:48:22,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469157391] [2024-09-12 19:48:22,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:48:22,741 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:48:22,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:22,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:48:22,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:48:22,742 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:48:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:22,816 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2024-09-12 19:48:22,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:48:22,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-12 19:48:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:22,817 INFO L225 Difference]: With dead ends: 45 [2024-09-12 19:48:22,817 INFO L226 Difference]: Without dead ends: 44 [2024-09-12 19:48:22,817 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 19:48:22,818 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:22,819 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 107 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:48:22,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-12 19:48:22,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-09-12 19:48:22,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 31 states have internal predecessors, (37), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:48:22,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-09-12 19:48:22,831 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 12 [2024-09-12 19:48:22,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:22,831 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-09-12 19:48:22,831 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:48:22,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:22,832 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-09-12 19:48:22,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-12 19:48:22,832 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:22,832 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:22,833 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 19:48:22,833 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:22,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1019635774, now seen corresponding path program 1 times [2024-09-12 19:48:22,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:22,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895814667] [2024-09-12 19:48:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:22,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:23,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:23,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:23,136 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 19:48:23,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:23,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895814667] [2024-09-12 19:48:23,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895814667] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:48:23,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:48:23,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 19:48:23,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148722358] [2024-09-12 19:48:23,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:48:23,137 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:48:23,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:23,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:48:23,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:48:23,139 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:48:23,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:23,217 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2024-09-12 19:48:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:48:23,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-09-12 19:48:23,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:23,218 INFO L225 Difference]: With dead ends: 54 [2024-09-12 19:48:23,218 INFO L226 Difference]: Without dead ends: 48 [2024-09-12 19:48:23,218 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:48:23,219 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:23,220 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 116 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:48:23,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-12 19:48:23,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2024-09-12 19:48:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 31 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:48:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-09-12 19:48:23,228 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 14 [2024-09-12 19:48:23,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:23,228 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-09-12 19:48:23,228 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:48:23,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:23,229 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-09-12 19:48:23,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 19:48:23,229 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:23,229 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:23,229 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 19:48:23,229 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:23,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:23,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2117885108, now seen corresponding path program 1 times [2024-09-12 19:48:23,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:23,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072208072] [2024-09-12 19:48:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:23,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:23,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:23,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:23,451 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 19:48:23,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:23,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072208072] [2024-09-12 19:48:23,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072208072] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:48:23,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:48:23,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 19:48:23,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679731811] [2024-09-12 19:48:23,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:48:23,452 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:48:23,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:23,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:48:23,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:48:23,453 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:48:23,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:23,524 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2024-09-12 19:48:23,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:48:23,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-09-12 19:48:23,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:23,526 INFO L225 Difference]: With dead ends: 52 [2024-09-12 19:48:23,526 INFO L226 Difference]: Without dead ends: 46 [2024-09-12 19:48:23,527 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:48:23,527 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:23,528 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 145 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:48:23,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-12 19:48:23,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2024-09-12 19:48:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:48:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2024-09-12 19:48:23,533 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 15 [2024-09-12 19:48:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:23,534 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2024-09-12 19:48:23,534 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:48:23,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:23,534 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2024-09-12 19:48:23,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 19:48:23,534 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:23,534 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:23,534 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 19:48:23,535 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:23,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:23,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1248442195, now seen corresponding path program 1 times [2024-09-12 19:48:23,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:23,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126342735] [2024-09-12 19:48:23,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:23,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:23,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:23,583 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 19:48:23,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:23,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126342735] [2024-09-12 19:48:23,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126342735] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:48:23,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:48:23,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 19:48:23,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832672467] [2024-09-12 19:48:23,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:48:23,584 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:48:23,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:23,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:48:23,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:48:23,584 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:48:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:23,684 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2024-09-12 19:48:23,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:48:23,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-09-12 19:48:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:23,685 INFO L225 Difference]: With dead ends: 55 [2024-09-12 19:48:23,685 INFO L226 Difference]: Without dead ends: 54 [2024-09-12 19:48:23,685 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-12 19:48:23,686 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:23,686 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 127 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:48:23,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-12 19:48:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-09-12 19:48:23,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 38 states have internal predecessors, (45), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 19:48:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2024-09-12 19:48:23,698 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2024-09-12 19:48:23,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:23,698 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2024-09-12 19:48:23,698 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:48:23,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:23,699 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2024-09-12 19:48:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 19:48:23,699 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:23,699 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:23,699 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 19:48:23,699 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:23,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:23,700 INFO L85 PathProgramCache]: Analyzing trace with hash 47002425, now seen corresponding path program 1 times [2024-09-12 19:48:23,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:23,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147541128] [2024-09-12 19:48:23,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:23,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:23,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:23,755 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 19:48:23,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:23,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147541128] [2024-09-12 19:48:23,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147541128] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:48:23,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:48:23,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 19:48:23,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691067509] [2024-09-12 19:48:23,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:48:23,757 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:48:23,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:23,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:48:23,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:48:23,758 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:48:23,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:23,846 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2024-09-12 19:48:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:48:23,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-09-12 19:48:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:23,847 INFO L225 Difference]: With dead ends: 57 [2024-09-12 19:48:23,847 INFO L226 Difference]: Without dead ends: 55 [2024-09-12 19:48:23,848 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-12 19:48:23,848 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 26 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:23,849 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 72 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:48:23,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-12 19:48:23,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2024-09-12 19:48:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 36 states have internal predecessors, (42), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 19:48:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2024-09-12 19:48:23,857 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 18 [2024-09-12 19:48:23,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:23,857 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2024-09-12 19:48:23,857 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:48:23,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:23,858 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2024-09-12 19:48:23,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-12 19:48:23,858 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:23,858 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:23,858 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-12 19:48:23,859 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:23,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:23,859 INFO L85 PathProgramCache]: Analyzing trace with hash 576261055, now seen corresponding path program 1 times [2024-09-12 19:48:23,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:23,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210980549] [2024-09-12 19:48:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:23,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:23,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:23,924 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 19:48:23,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:23,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210980549] [2024-09-12 19:48:23,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210980549] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:23,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943153971] [2024-09-12 19:48:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:23,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:23,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:23,926 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 19:48:23,929 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 19:48:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:23,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 19:48:23,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:24,025 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 19:48:24,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:48:24,132 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 19:48:24,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943153971] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:48:24,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:48:24,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-09-12 19:48:24,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757757213] [2024-09-12 19:48:24,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:48:24,133 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 19:48:24,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:24,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 19:48:24,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-09-12 19:48:24,134 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (8), 7 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:48:24,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:24,313 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2024-09-12 19:48:24,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 19:48:24,314 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (8), 7 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-09-12 19:48:24,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:24,316 INFO L225 Difference]: With dead ends: 88 [2024-09-12 19:48:24,316 INFO L226 Difference]: Without dead ends: 86 [2024-09-12 19:48:24,316 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-09-12 19:48:24,316 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 98 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:24,317 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 168 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:48:24,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-12 19:48:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2024-09-12 19:48:24,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 57 states have internal predecessors, (69), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:48:24,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2024-09-12 19:48:24,334 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 23 [2024-09-12 19:48:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:24,334 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2024-09-12 19:48:24,334 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (8), 7 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:48:24,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:24,335 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2024-09-12 19:48:24,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-12 19:48:24,335 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:24,335 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:24,350 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 19:48:24,540 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 19:48:24,541 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:24,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:24,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1705518280, now seen corresponding path program 1 times [2024-09-12 19:48:24,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:24,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498315310] [2024-09-12 19:48:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:24,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:24,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:24,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:24,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:24,616 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 19:48:24,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:24,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498315310] [2024-09-12 19:48:24,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498315310] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:48:24,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:48:24,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 19:48:24,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28263944] [2024-09-12 19:48:24,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:48:24,617 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:48:24,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:24,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:48:24,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:48:24,618 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:48:24,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:24,656 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2024-09-12 19:48:24,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:48:24,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-12 19:48:24,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:24,660 INFO L225 Difference]: With dead ends: 119 [2024-09-12 19:48:24,661 INFO L226 Difference]: Without dead ends: 88 [2024-09-12 19:48:24,661 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:48:24,661 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:24,662 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 65 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:48:24,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-12 19:48:24,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2024-09-12 19:48:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.2) internal successors, (66), 57 states have internal predecessors, (66), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:48:24,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2024-09-12 19:48:24,681 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 23 [2024-09-12 19:48:24,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:24,682 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2024-09-12 19:48:24,682 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:48:24,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:24,682 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2024-09-12 19:48:24,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-12 19:48:24,683 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:24,683 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:24,683 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-12 19:48:24,683 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:24,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:24,683 INFO L85 PathProgramCache]: Analyzing trace with hash -208811026, now seen corresponding path program 1 times [2024-09-12 19:48:24,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:24,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919803507] [2024-09-12 19:48:24,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:24,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:24,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:24,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:24,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:24,909 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 19:48:24,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:24,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919803507] [2024-09-12 19:48:24,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919803507] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:48:24,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:48:24,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 19:48:24,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075260959] [2024-09-12 19:48:24,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:48:24,910 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 19:48:24,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:24,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 19:48:24,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-09-12 19:48:24,911 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:48:25,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:25,012 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-09-12 19:48:25,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 19:48:25,012 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-09-12 19:48:25,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:25,013 INFO L225 Difference]: With dead ends: 104 [2024-09-12 19:48:25,013 INFO L226 Difference]: Without dead ends: 95 [2024-09-12 19:48:25,013 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-09-12 19:48:25,014 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:25,014 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 108 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:48:25,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-12 19:48:25,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 76. [2024-09-12 19:48:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 57 states have internal predecessors, (65), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:48:25,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2024-09-12 19:48:25,026 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 24 [2024-09-12 19:48:25,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:25,026 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2024-09-12 19:48:25,026 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:48:25,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:25,026 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2024-09-12 19:48:25,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 19:48:25,027 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:25,027 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:25,027 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-12 19:48:25,027 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:25,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:25,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1991088502, now seen corresponding path program 1 times [2024-09-12 19:48:25,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:25,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315539667] [2024-09-12 19:48:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:25,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:25,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:25,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:25,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:25,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 19:48:25,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:25,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315539667] [2024-09-12 19:48:25,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315539667] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:48:25,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:48:25,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 19:48:25,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167346569] [2024-09-12 19:48:25,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:48:25,107 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:48:25,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:25,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:48:25,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:48:25,107 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 19:48:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:25,147 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2024-09-12 19:48:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:48:25,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-09-12 19:48:25,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:25,148 INFO L225 Difference]: With dead ends: 117 [2024-09-12 19:48:25,149 INFO L226 Difference]: Without dead ends: 86 [2024-09-12 19:48:25,149 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:48:25,149 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:25,152 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 57 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:48:25,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-12 19:48:25,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2024-09-12 19:48:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 57 states have internal predecessors, (62), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:48:25,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2024-09-12 19:48:25,169 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 32 [2024-09-12 19:48:25,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:25,170 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2024-09-12 19:48:25,170 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 19:48:25,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:25,170 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2024-09-12 19:48:25,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 19:48:25,171 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:25,171 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:25,171 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-12 19:48:25,172 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:25,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:25,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2055324376, now seen corresponding path program 1 times [2024-09-12 19:48:25,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:25,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443630137] [2024-09-12 19:48:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:25,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:25,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:25,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:25,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:25,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 19:48:25,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:25,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443630137] [2024-09-12 19:48:25,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443630137] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:25,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589368081] [2024-09-12 19:48:25,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:25,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:25,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:25,481 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 19:48:25,482 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 19:48:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:25,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 19:48:25,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 19:48:25,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:48:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 19:48:26,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589368081] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:48:26,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:48:26,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 21 [2024-09-12 19:48:26,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172351957] [2024-09-12 19:48:26,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:48:26,005 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 19:48:26,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 19:48:26,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-09-12 19:48:26,006 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 21 states, 19 states have (on average 2.210526315789474) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 19:48:26,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:26,199 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2024-09-12 19:48:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 19:48:26,200 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.210526315789474) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 33 [2024-09-12 19:48:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:26,200 INFO L225 Difference]: With dead ends: 111 [2024-09-12 19:48:26,200 INFO L226 Difference]: Without dead ends: 99 [2024-09-12 19:48:26,201 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-09-12 19:48:26,201 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 10 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:26,201 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 139 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:48:26,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-12 19:48:26,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2024-09-12 19:48:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 57 states have internal predecessors, (61), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 19:48:26,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2024-09-12 19:48:26,218 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 33 [2024-09-12 19:48:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:26,218 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2024-09-12 19:48:26,218 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.210526315789474) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 19:48:26,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2024-09-12 19:48:26,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-12 19:48:26,221 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:26,221 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:26,233 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 19:48:26,424 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 19:48:26,425 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:26,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:26,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1032360423, now seen corresponding path program 1 times [2024-09-12 19:48:26,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:26,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213151262] [2024-09-12 19:48:26,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:26,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:26,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:48:26,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:26,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213151262] [2024-09-12 19:48:26,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213151262] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:26,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103227803] [2024-09-12 19:48:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:26,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:26,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:26,541 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 19:48:26,542 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 19:48:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:26,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 19:48:26,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:48:26,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:48:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:48:26,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103227803] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:48:26,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:48:26,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-09-12 19:48:26,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95073391] [2024-09-12 19:48:26,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:48:26,804 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 19:48:26,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:26,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 19:48:26,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2024-09-12 19:48:26,805 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 13 states have call successors, (14), 13 states have call predecessors, (14), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:48:27,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:27,164 INFO L93 Difference]: Finished difference Result 161 states and 177 transitions. [2024-09-12 19:48:27,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-12 19:48:27,165 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 13 states have call successors, (14), 13 states have call predecessors, (14), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2024-09-12 19:48:27,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:27,166 INFO L225 Difference]: With dead ends: 161 [2024-09-12 19:48:27,166 INFO L226 Difference]: Without dead ends: 159 [2024-09-12 19:48:27,166 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 19:48:27,167 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 206 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:27,167 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 283 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:48:27,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-09-12 19:48:27,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 139. [2024-09-12 19:48:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 104 states have (on average 1.125) internal successors, (117), 106 states have internal predecessors, (117), 17 states have call successors, (17), 16 states have call predecessors, (17), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 19:48:27,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2024-09-12 19:48:27,196 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 41 [2024-09-12 19:48:27,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:27,196 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2024-09-12 19:48:27,196 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 13 states have call successors, (14), 13 states have call predecessors, (14), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:48:27,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:27,197 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2024-09-12 19:48:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-12 19:48:27,197 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:27,197 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:27,213 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 19:48:27,401 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 19:48:27,402 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:27,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:27,402 INFO L85 PathProgramCache]: Analyzing trace with hash 802143654, now seen corresponding path program 1 times [2024-09-12 19:48:27,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:27,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945318955] [2024-09-12 19:48:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:27,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:27,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:27,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:27,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:27,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:27,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 19:48:27,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:27,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945318955] [2024-09-12 19:48:27,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945318955] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:27,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379821648] [2024-09-12 19:48:27,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:27,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:27,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:27,686 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 19:48:27,688 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 19:48:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:27,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 19:48:27,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-12 19:48:27,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:48:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 19:48:28,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379821648] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:48:28,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:48:28,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 24 [2024-09-12 19:48:28,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853888419] [2024-09-12 19:48:28,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:48:28,210 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 19:48:28,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:28,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 19:48:28,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-09-12 19:48:28,211 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand has 24 states, 23 states have (on average 2.217391304347826) internal successors, (51), 17 states have internal predecessors, (51), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-12 19:48:28,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:28,478 INFO L93 Difference]: Finished difference Result 225 states and 238 transitions. [2024-09-12 19:48:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 19:48:28,479 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.217391304347826) internal successors, (51), 17 states have internal predecessors, (51), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 42 [2024-09-12 19:48:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:28,480 INFO L225 Difference]: With dead ends: 225 [2024-09-12 19:48:28,480 INFO L226 Difference]: Without dead ends: 210 [2024-09-12 19:48:28,480 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2024-09-12 19:48:28,481 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:28,481 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 221 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:48:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-09-12 19:48:28,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 139. [2024-09-12 19:48:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 104 states have (on average 1.1153846153846154) internal successors, (116), 106 states have internal predecessors, (116), 17 states have call successors, (17), 16 states have call predecessors, (17), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 19:48:28,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 149 transitions. [2024-09-12 19:48:28,500 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 149 transitions. Word has length 42 [2024-09-12 19:48:28,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:28,500 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 149 transitions. [2024-09-12 19:48:28,500 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.217391304347826) internal successors, (51), 17 states have internal predecessors, (51), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-12 19:48:28,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:28,500 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 149 transitions. [2024-09-12 19:48:28,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-12 19:48:28,501 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:28,501 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:28,513 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 19:48:28,703 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:28,704 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:28,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1054501604, now seen corresponding path program 2 times [2024-09-12 19:48:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:28,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178680674] [2024-09-12 19:48:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:28,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:28,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:28,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:28,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:28,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:28,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:29,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 19:48:29,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:29,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178680674] [2024-09-12 19:48:29,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178680674] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:29,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885304748] [2024-09-12 19:48:29,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:48:29,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:29,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:29,056 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 19:48:29,057 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 19:48:29,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:48:29,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:48:29,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 19:48:29,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 19:48:29,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:48:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:48:29,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885304748] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:48:29,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:48:29,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 18] total 27 [2024-09-12 19:48:29,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80062528] [2024-09-12 19:48:29,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:48:29,768 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 19:48:29,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:29,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 19:48:29,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-09-12 19:48:29,769 INFO L87 Difference]: Start difference. First operand 139 states and 149 transitions. Second operand has 27 states, 25 states have (on average 2.24) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-12 19:48:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:30,083 INFO L93 Difference]: Finished difference Result 241 states and 253 transitions. [2024-09-12 19:48:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 19:48:30,083 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.24) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 51 [2024-09-12 19:48:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:30,085 INFO L225 Difference]: With dead ends: 241 [2024-09-12 19:48:30,085 INFO L226 Difference]: Without dead ends: 223 [2024-09-12 19:48:30,086 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 19:48:30,087 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:30,087 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 220 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:48:30,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-09-12 19:48:30,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 139. [2024-09-12 19:48:30,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 104 states have (on average 1.1057692307692308) internal successors, (115), 106 states have internal predecessors, (115), 17 states have call successors, (17), 16 states have call predecessors, (17), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 19:48:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2024-09-12 19:48:30,111 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 51 [2024-09-12 19:48:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:30,111 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2024-09-12 19:48:30,111 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.24) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-12 19:48:30,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:30,112 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2024-09-12 19:48:30,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-12 19:48:30,113 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:30,113 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:30,127 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-12 19:48:30,317 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 19:48:30,319 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:30,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:30,319 INFO L85 PathProgramCache]: Analyzing trace with hash -977021986, now seen corresponding path program 2 times [2024-09-12 19:48:30,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:30,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538974532] [2024-09-12 19:48:30,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:30,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:30,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:30,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:30,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:30,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:30,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:30,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:30,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-12 19:48:30,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:30,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538974532] [2024-09-12 19:48:30,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538974532] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:30,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026100022] [2024-09-12 19:48:30,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:48:30,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:30,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:30,768 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 19:48:30,769 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 19:48:30,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:48:30,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:48:30,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-12 19:48:30,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-12 19:48:30,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:48:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 19:48:31,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026100022] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:48:31,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:48:31,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 21] total 30 [2024-09-12 19:48:31,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601333967] [2024-09-12 19:48:31,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:48:31,567 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-12 19:48:31,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:31,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-12 19:48:31,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2024-09-12 19:48:31,568 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand has 30 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 21 states have internal predecessors, (65), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2024-09-12 19:48:31,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:31,915 INFO L93 Difference]: Finished difference Result 254 states and 266 transitions. [2024-09-12 19:48:31,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 19:48:31,916 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 21 states have internal predecessors, (65), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) Word has length 60 [2024-09-12 19:48:31,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:31,917 INFO L225 Difference]: With dead ends: 254 [2024-09-12 19:48:31,917 INFO L226 Difference]: Without dead ends: 233 [2024-09-12 19:48:31,918 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 19:48:31,918 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:31,918 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 278 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:48:31,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-09-12 19:48:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 139. [2024-09-12 19:48:31,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 104 states have (on average 1.0961538461538463) internal successors, (114), 106 states have internal predecessors, (114), 17 states have call successors, (17), 16 states have call predecessors, (17), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 19:48:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2024-09-12 19:48:31,946 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 60 [2024-09-12 19:48:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:31,946 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2024-09-12 19:48:31,946 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 21 states have internal predecessors, (65), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2024-09-12 19:48:31,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2024-09-12 19:48:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-12 19:48:31,947 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:31,947 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:31,959 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 19:48:32,151 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 19:48:32,152 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:32,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:32,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2099258512, now seen corresponding path program 3 times [2024-09-12 19:48:32,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:32,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832002269] [2024-09-12 19:48:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:32,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:32,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:32,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:32,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:32,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:32,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:32,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:32,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:32,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-12 19:48:32,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:32,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832002269] [2024-09-12 19:48:32,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832002269] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:32,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691438938] [2024-09-12 19:48:32,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 19:48:32,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:32,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:32,650 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 19:48:32,651 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 19:48:32,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-12 19:48:32,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:48:32,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-12 19:48:32,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-12 19:48:32,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:48:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-12 19:48:33,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691438938] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:48:33,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:48:33,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 24] total 33 [2024-09-12 19:48:33,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852689134] [2024-09-12 19:48:33,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:48:33,570 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-12 19:48:33,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:33,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-12 19:48:33,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 19:48:33,571 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand has 33 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 23 states have internal predecessors, (70), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2024-09-12 19:48:33,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:33,951 INFO L93 Difference]: Finished difference Result 267 states and 278 transitions. [2024-09-12 19:48:33,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-12 19:48:33,952 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 23 states have internal predecessors, (70), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) Word has length 69 [2024-09-12 19:48:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:33,954 INFO L225 Difference]: With dead ends: 267 [2024-09-12 19:48:33,954 INFO L226 Difference]: Without dead ends: 243 [2024-09-12 19:48:33,955 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=1780, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 19:48:33,955 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 28 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:33,955 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 279 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:48:33,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-12 19:48:33,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 139. [2024-09-12 19:48:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 104 states have (on average 1.0865384615384615) internal successors, (113), 106 states have internal predecessors, (113), 17 states have call successors, (17), 16 states have call predecessors, (17), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 19:48:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 146 transitions. [2024-09-12 19:48:33,987 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 146 transitions. Word has length 69 [2024-09-12 19:48:33,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:33,987 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 146 transitions. [2024-09-12 19:48:33,988 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 23 states have internal predecessors, (70), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2024-09-12 19:48:33,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 146 transitions. [2024-09-12 19:48:33,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-12 19:48:33,988 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:33,988 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:34,000 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-12 19:48:34,189 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 19:48:34,189 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:34,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:34,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1314262678, now seen corresponding path program 3 times [2024-09-12 19:48:34,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:34,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193469823] [2024-09-12 19:48:34,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:34,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:34,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:34,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:34,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:34,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:34,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:34,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:34,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:34,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:34,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-12 19:48:34,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:34,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193469823] [2024-09-12 19:48:34,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193469823] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:34,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376785750] [2024-09-12 19:48:34,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 19:48:34,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:34,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:34,788 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 19:48:34,790 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 19:48:34,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-12 19:48:34,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:48:34,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-12 19:48:34,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-09-12 19:48:34,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:48:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 19:48:35,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376785750] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:48:35,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:48:35,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 27] total 36 [2024-09-12 19:48:35,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554448217] [2024-09-12 19:48:35,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:48:35,836 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 19:48:35,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:35,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 19:48:35,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 19:48:35,837 INFO L87 Difference]: Start difference. First operand 139 states and 146 transitions. Second operand has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 25 states have internal predecessors, (79), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-12 19:48:36,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:36,262 INFO L93 Difference]: Finished difference Result 277 states and 288 transitions. [2024-09-12 19:48:36,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 19:48:36,263 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 25 states have internal predecessors, (79), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) Word has length 78 [2024-09-12 19:48:36,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:36,264 INFO L225 Difference]: With dead ends: 277 [2024-09-12 19:48:36,264 INFO L226 Difference]: Without dead ends: 250 [2024-09-12 19:48:36,265 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=241, Invalid=2209, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 19:48:36,265 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:36,265 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 395 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:48:36,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-09-12 19:48:36,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 139. [2024-09-12 19:48:36,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 104 states have (on average 1.0769230769230769) internal successors, (112), 106 states have internal predecessors, (112), 17 states have call successors, (17), 16 states have call predecessors, (17), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 19:48:36,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 145 transitions. [2024-09-12 19:48:36,286 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 145 transitions. Word has length 78 [2024-09-12 19:48:36,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:36,286 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 145 transitions. [2024-09-12 19:48:36,286 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.257142857142857) internal successors, (79), 25 states have internal predecessors, (79), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-12 19:48:36,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:36,286 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 145 transitions. [2024-09-12 19:48:36,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-09-12 19:48:36,287 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:36,287 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:36,301 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 19:48:36,487 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:36,488 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:36,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:36,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1394665521, now seen corresponding path program 2 times [2024-09-12 19:48:36,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:36,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908550482] [2024-09-12 19:48:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:36,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:36,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:48:36,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:36,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908550482] [2024-09-12 19:48:36,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908550482] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:36,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65073468] [2024-09-12 19:48:36,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:48:36,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:36,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:36,803 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 19:48:36,805 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 19:48:36,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:48:36,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:48:36,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 19:48:36,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:48:36,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:48:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:48:37,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65073468] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:48:37,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:48:37,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2024-09-12 19:48:37,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234841134] [2024-09-12 19:48:37,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:48:37,319 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-12 19:48:37,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:37,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-12 19:48:37,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 19:48:37,320 INFO L87 Difference]: Start difference. First operand 139 states and 145 transitions. Second operand has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 27 states have call successors, (28), 27 states have call predecessors, (28), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:48:37,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:37,980 INFO L93 Difference]: Finished difference Result 294 states and 324 transitions. [2024-09-12 19:48:37,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-09-12 19:48:37,981 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 27 states have call successors, (28), 27 states have call predecessors, (28), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2024-09-12 19:48:37,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:37,982 INFO L225 Difference]: With dead ends: 294 [2024-09-12 19:48:37,982 INFO L226 Difference]: Without dead ends: 292 [2024-09-12 19:48:37,984 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=970, Invalid=5510, Unknown=0, NotChecked=0, Total=6480 [2024-09-12 19:48:37,984 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 504 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:37,984 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 506 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:48:37,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-09-12 19:48:38,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 256. [2024-09-12 19:48:38,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 195 states have (on average 1.1076923076923078) internal successors, (216), 197 states have internal predecessors, (216), 30 states have call successors, (30), 29 states have call predecessors, (30), 28 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 19:48:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 275 transitions. [2024-09-12 19:48:38,028 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 275 transitions. Word has length 83 [2024-09-12 19:48:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:38,028 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 275 transitions. [2024-09-12 19:48:38,028 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 27 states have call successors, (28), 27 states have call predecessors, (28), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:48:38,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:38,029 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 275 transitions. [2024-09-12 19:48:38,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-12 19:48:38,029 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:38,029 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:38,041 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-12 19:48:38,229 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 19:48:38,230 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:38,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:38,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1500752772, now seen corresponding path program 4 times [2024-09-12 19:48:38,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:38,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373327896] [2024-09-12 19:48:38,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:38,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:38,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:38,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:38,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:38,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:38,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:38,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:38,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:38,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:38,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:38,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 19:48:38,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:38,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373327896] [2024-09-12 19:48:38,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373327896] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:38,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924182129] [2024-09-12 19:48:38,891 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 19:48:38,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:38,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:38,893 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 19:48:38,894 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 19:48:38,936 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 19:48:38,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:48:38,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-12 19:48:38,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 19:48:39,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:48:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 19:48:40,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924182129] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:48:40,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:48:40,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 30] total 39 [2024-09-12 19:48:40,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183416941] [2024-09-12 19:48:40,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:48:40,084 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-12 19:48:40,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:40,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-12 19:48:40,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 19:48:40,086 INFO L87 Difference]: Start difference. First operand 256 states and 275 transitions. Second operand has 39 states, 37 states have (on average 2.27027027027027) internal successors, (84), 27 states have internal predecessors, (84), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2024-09-12 19:48:40,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:40,641 INFO L93 Difference]: Finished difference Result 586 states and 609 transitions. [2024-09-12 19:48:40,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 19:48:40,641 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 2.27027027027027) internal successors, (84), 27 states have internal predecessors, (84), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) Word has length 87 [2024-09-12 19:48:40,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:40,643 INFO L225 Difference]: With dead ends: 586 [2024-09-12 19:48:40,643 INFO L226 Difference]: Without dead ends: 556 [2024-09-12 19:48:40,644 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=270, Invalid=2700, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 19:48:40,645 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:40,645 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 402 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:48:40,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2024-09-12 19:48:40,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 256. [2024-09-12 19:48:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 195 states have (on average 1.1025641025641026) internal successors, (215), 197 states have internal predecessors, (215), 30 states have call successors, (30), 29 states have call predecessors, (30), 28 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 19:48:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 274 transitions. [2024-09-12 19:48:40,690 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 274 transitions. Word has length 87 [2024-09-12 19:48:40,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:40,690 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 274 transitions. [2024-09-12 19:48:40,690 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 2.27027027027027) internal successors, (84), 27 states have internal predecessors, (84), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2024-09-12 19:48:40,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:40,691 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 274 transitions. [2024-09-12 19:48:40,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-12 19:48:40,691 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:40,691 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:40,707 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 19:48:40,895 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:40,896 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:40,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:40,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2044358094, now seen corresponding path program 4 times [2024-09-12 19:48:40,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:40,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088864155] [2024-09-12 19:48:40,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:40,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:41,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:41,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:41,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:41,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:41,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:41,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:41,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:41,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:41,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:41,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:41,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-12 19:48:41,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:41,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088864155] [2024-09-12 19:48:41,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088864155] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:41,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020753787] [2024-09-12 19:48:41,679 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 19:48:41,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:41,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:41,680 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 19:48:41,680 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 19:48:41,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 19:48:41,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:48:41,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-12 19:48:41,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-09-12 19:48:41,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:48:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-12 19:48:43,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020753787] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:48:43,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:48:43,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 33] total 42 [2024-09-12 19:48:43,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268242623] [2024-09-12 19:48:43,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:48:43,045 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-12 19:48:43,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:43,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-12 19:48:43,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 19:48:43,046 INFO L87 Difference]: Start difference. First operand 256 states and 274 transitions. Second operand has 42 states, 41 states have (on average 2.268292682926829) internal successors, (93), 29 states have internal predecessors, (93), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) [2024-09-12 19:48:43,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:43,712 INFO L93 Difference]: Finished difference Result 614 states and 636 transitions. [2024-09-12 19:48:43,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 19:48:43,713 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.268292682926829) internal successors, (93), 29 states have internal predecessors, (93), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) Word has length 96 [2024-09-12 19:48:43,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:43,717 INFO L225 Difference]: With dead ends: 614 [2024-09-12 19:48:43,717 INFO L226 Difference]: Without dead ends: 581 [2024-09-12 19:48:43,718 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=317, Invalid=3223, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 19:48:43,719 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:43,719 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 509 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:48:43,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-09-12 19:48:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 256. [2024-09-12 19:48:43,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 195 states have (on average 1.0974358974358975) internal successors, (214), 197 states have internal predecessors, (214), 30 states have call successors, (30), 29 states have call predecessors, (30), 28 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 19:48:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 273 transitions. [2024-09-12 19:48:43,775 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 273 transitions. Word has length 96 [2024-09-12 19:48:43,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:43,775 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 273 transitions. [2024-09-12 19:48:43,775 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.268292682926829) internal successors, (93), 29 states have internal predecessors, (93), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) [2024-09-12 19:48:43,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 273 transitions. [2024-09-12 19:48:43,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-09-12 19:48:43,776 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:43,776 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:43,789 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-12 19:48:43,976 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:43,977 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:43,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:43,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1312680440, now seen corresponding path program 5 times [2024-09-12 19:48:43,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:43,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997212284] [2024-09-12 19:48:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:43,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:44,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:44,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:44,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:44,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:44,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:44,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:44,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:44,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:44,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:44,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:44,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:44,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-09-12 19:48:44,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:44,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997212284] [2024-09-12 19:48:44,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997212284] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:44,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045756946] [2024-09-12 19:48:44,890 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 19:48:44,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:44,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:44,892 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 19:48:44,893 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 19:48:44,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-12 19:48:44,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:48:44,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-12 19:48:44,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-09-12 19:48:45,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:48:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-12 19:48:46,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045756946] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:48:46,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:48:46,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 36] total 45 [2024-09-12 19:48:46,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418382343] [2024-09-12 19:48:46,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:48:46,520 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-12 19:48:46,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:46,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-12 19:48:46,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1832, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 19:48:46,521 INFO L87 Difference]: Start difference. First operand 256 states and 273 transitions. Second operand has 45 states, 43 states have (on average 2.2790697674418605) internal successors, (98), 31 states have internal predecessors, (98), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) [2024-09-12 19:48:47,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:47,305 INFO L93 Difference]: Finished difference Result 639 states and 661 transitions. [2024-09-12 19:48:47,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-12 19:48:47,306 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 2.2790697674418605) internal successors, (98), 31 states have internal predecessors, (98), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) Word has length 105 [2024-09-12 19:48:47,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:47,308 INFO L225 Difference]: With dead ends: 639 [2024-09-12 19:48:47,308 INFO L226 Difference]: Without dead ends: 603 [2024-09-12 19:48:47,309 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=348, Invalid=3812, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 19:48:47,309 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 42 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:47,310 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 619 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:48:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-09-12 19:48:47,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 256. [2024-09-12 19:48:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 195 states have (on average 1.0923076923076922) internal successors, (213), 197 states have internal predecessors, (213), 30 states have call successors, (30), 29 states have call predecessors, (30), 28 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 19:48:47,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 272 transitions. [2024-09-12 19:48:47,372 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 272 transitions. Word has length 105 [2024-09-12 19:48:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:47,372 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 272 transitions. [2024-09-12 19:48:47,372 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 2.2790697674418605) internal successors, (98), 31 states have internal predecessors, (98), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) [2024-09-12 19:48:47,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:47,373 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 272 transitions. [2024-09-12 19:48:47,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-09-12 19:48:47,373 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:47,373 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:47,385 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 19:48:47,574 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-12 19:48:47,574 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:47,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:47,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1743982202, now seen corresponding path program 5 times [2024-09-12 19:48:47,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:47,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656775158] [2024-09-12 19:48:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:47,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:47,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:47,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:47,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:47,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:48,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:48,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:48,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:48,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:48,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:48,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:48,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:48,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:48,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-12 19:48:48,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:48,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656775158] [2024-09-12 19:48:48,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656775158] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:48,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039087534] [2024-09-12 19:48:48,603 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 19:48:48,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:48,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:48,605 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 19:48:48,606 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 19:48:48,670 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-12 19:48:48,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:48:48,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-09-12 19:48:48,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-09-12 19:48:48,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:48:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-12 19:48:50,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039087534] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:48:50,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:48:50,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 39] total 48 [2024-09-12 19:48:50,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119395676] [2024-09-12 19:48:50,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:48:50,413 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 19:48:50,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:50,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 19:48:50,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2097, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 19:48:50,415 INFO L87 Difference]: Start difference. First operand 256 states and 272 transitions. Second operand has 48 states, 47 states have (on average 2.276595744680851) internal successors, (107), 33 states have internal predecessors, (107), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) [2024-09-12 19:48:51,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:51,287 INFO L93 Difference]: Finished difference Result 664 states and 685 transitions. [2024-09-12 19:48:51,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 19:48:51,288 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.276595744680851) internal successors, (107), 33 states have internal predecessors, (107), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) Word has length 114 [2024-09-12 19:48:51,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:51,290 INFO L225 Difference]: With dead ends: 664 [2024-09-12 19:48:51,290 INFO L226 Difference]: Without dead ends: 625 [2024-09-12 19:48:51,291 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=401, Invalid=4429, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 19:48:51,292 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 40 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:51,292 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 581 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:48:51,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2024-09-12 19:48:51,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 256. [2024-09-12 19:48:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 195 states have (on average 1.087179487179487) internal successors, (212), 197 states have internal predecessors, (212), 30 states have call successors, (30), 29 states have call predecessors, (30), 28 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 19:48:51,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 271 transitions. [2024-09-12 19:48:51,347 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 271 transitions. Word has length 114 [2024-09-12 19:48:51,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:51,347 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 271 transitions. [2024-09-12 19:48:51,347 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.276595744680851) internal successors, (107), 33 states have internal predecessors, (107), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) [2024-09-12 19:48:51,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:51,347 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 271 transitions. [2024-09-12 19:48:51,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-12 19:48:51,348 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:51,348 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:51,364 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 19:48:51,552 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:51,553 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:51,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:51,553 INFO L85 PathProgramCache]: Analyzing trace with hash -800366572, now seen corresponding path program 6 times [2024-09-12 19:48:51,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:51,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405515724] [2024-09-12 19:48:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:51,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:51,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:51,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:51,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:51,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:52,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:52,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:52,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:52,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:52,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:52,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:52,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:52,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:52,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:52,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-09-12 19:48:52,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:52,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405515724] [2024-09-12 19:48:52,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405515724] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:52,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256863210] [2024-09-12 19:48:52,662 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 19:48:52,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:52,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:52,666 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 19:48:52,667 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 19:48:52,732 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-12 19:48:52,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:48:52,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-09-12 19:48:52,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-09-12 19:48:52,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:48:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-12 19:48:54,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256863210] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:48:54,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:48:54,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 42] total 51 [2024-09-12 19:48:54,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263331362] [2024-09-12 19:48:54,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:48:54,779 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-12 19:48:54,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:48:54,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-12 19:48:54,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2380, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 19:48:54,781 INFO L87 Difference]: Start difference. First operand 256 states and 271 transitions. Second operand has 51 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 35 states have internal predecessors, (112), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) [2024-09-12 19:48:55,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:48:55,733 INFO L93 Difference]: Finished difference Result 686 states and 707 transitions. [2024-09-12 19:48:55,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-12 19:48:55,734 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 35 states have internal predecessors, (112), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) Word has length 123 [2024-09-12 19:48:55,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:48:55,736 INFO L225 Difference]: With dead ends: 686 [2024-09-12 19:48:55,736 INFO L226 Difference]: Without dead ends: 644 [2024-09-12 19:48:55,737 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=434, Invalid=5116, Unknown=0, NotChecked=0, Total=5550 [2024-09-12 19:48:55,738 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 19:48:55,738 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 677 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 19:48:55,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2024-09-12 19:48:55,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 256. [2024-09-12 19:48:55,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 195 states have (on average 1.082051282051282) internal successors, (211), 197 states have internal predecessors, (211), 30 states have call successors, (30), 29 states have call predecessors, (30), 28 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 19:48:55,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 270 transitions. [2024-09-12 19:48:55,797 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 270 transitions. Word has length 123 [2024-09-12 19:48:55,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:48:55,797 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 270 transitions. [2024-09-12 19:48:55,797 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 35 states have internal predecessors, (112), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) [2024-09-12 19:48:55,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:55,797 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 270 transitions. [2024-09-12 19:48:55,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-12 19:48:55,798 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:48:55,798 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:48:55,810 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-12 19:48:55,999 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-12 19:48:55,999 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:48:55,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:48:55,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1609459266, now seen corresponding path program 6 times [2024-09-12 19:48:55,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:48:55,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218217476] [2024-09-12 19:48:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:48:56,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:48:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:56,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:48:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:56,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:48:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:56,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:56,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:56,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:56,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:56,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:56,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:56,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:56,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:56,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:57,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:57,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:57,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:57,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:48:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:48:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-12 19:48:57,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:48:57,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218217476] [2024-09-12 19:48:57,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218217476] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:48:57,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519765048] [2024-09-12 19:48:57,271 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 19:48:57,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:48:57,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:48:57,272 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:48:57,273 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 19:48:57,342 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-12 19:48:57,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:48:57,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-12 19:48:57,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:48:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-09-12 19:48:58,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:49:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-12 19:49:08,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519765048] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:49:08,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:49:08,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 45] total 108 [2024-09-12 19:49:08,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122352144] [2024-09-12 19:49:08,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:49:08,169 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-09-12 19:49:08,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:49:08,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-09-12 19:49:08,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=11122, Unknown=0, NotChecked=0, Total=11556 [2024-09-12 19:49:08,174 INFO L87 Difference]: Start difference. First operand 256 states and 270 transitions. Second operand has 108 states, 106 states have (on average 1.650943396226415) internal successors, (175), 66 states have internal predecessors, (175), 18 states have call successors, (20), 1 states have call predecessors, (20), 43 states have return successors, (43), 43 states have call predecessors, (43), 18 states have call successors, (43) [2024-09-12 19:49:09,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:49:09,913 INFO L93 Difference]: Finished difference Result 708 states and 728 transitions. [2024-09-12 19:49:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-12 19:49:09,914 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 106 states have (on average 1.650943396226415) internal successors, (175), 66 states have internal predecessors, (175), 18 states have call successors, (20), 1 states have call predecessors, (20), 43 states have return successors, (43), 43 states have call predecessors, (43), 18 states have call successors, (43) Word has length 132 [2024-09-12 19:49:09,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:49:09,916 INFO L225 Difference]: With dead ends: 708 [2024-09-12 19:49:09,916 INFO L226 Difference]: Without dead ends: 663 [2024-09-12 19:49:09,918 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=808, Invalid=17552, Unknown=0, NotChecked=0, Total=18360 [2024-09-12 19:49:09,918 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 60 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 2359 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 2384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 19:49:09,919 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1346 Invalid, 2384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2359 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 19:49:09,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-09-12 19:49:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 256. [2024-09-12 19:49:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 195 states have (on average 1.0769230769230769) internal successors, (210), 197 states have internal predecessors, (210), 30 states have call successors, (30), 29 states have call predecessors, (30), 28 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 19:49:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 269 transitions. [2024-09-12 19:49:09,979 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 269 transitions. Word has length 132 [2024-09-12 19:49:09,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:49:09,980 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 269 transitions. [2024-09-12 19:49:09,980 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 106 states have (on average 1.650943396226415) internal successors, (175), 66 states have internal predecessors, (175), 18 states have call successors, (20), 1 states have call predecessors, (20), 43 states have return successors, (43), 43 states have call predecessors, (43), 18 states have call successors, (43) [2024-09-12 19:49:09,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:49:09,980 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 269 transitions. [2024-09-12 19:49:09,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-09-12 19:49:09,981 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:49:09,981 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:49:09,996 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-12 19:49:10,181 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 19:49:10,181 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:49:10,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:49:10,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1306161824, now seen corresponding path program 7 times [2024-09-12 19:49:10,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:49:10,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453389870] [2024-09-12 19:49:10,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:49:10,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:49:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:10,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:49:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:10,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:49:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:10,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:10,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:10,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:10,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:10,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:11,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:11,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:11,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:11,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:11,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:11,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:11,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:11,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:11,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-09-12 19:49:11,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:49:11,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453389870] [2024-09-12 19:49:11,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453389870] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:49:11,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279886929] [2024-09-12 19:49:11,581 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 19:49:11,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:49:11,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:49:11,582 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:49:11,583 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 19:49:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:11,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-09-12 19:49:11,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:49:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-09-12 19:49:11,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:49:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-12 19:49:14,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279886929] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:49:14,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:49:14,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 48] total 57 [2024-09-12 19:49:14,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643017282] [2024-09-12 19:49:14,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:49:14,274 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-12 19:49:14,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:49:14,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-12 19:49:14,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=3000, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 19:49:14,276 INFO L87 Difference]: Start difference. First operand 256 states and 269 transitions. Second operand has 57 states, 55 states have (on average 2.290909090909091) internal successors, (126), 39 states have internal predecessors, (126), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-12 19:49:15,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:49:15,470 INFO L93 Difference]: Finished difference Result 727 states and 747 transitions. [2024-09-12 19:49:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-12 19:49:15,471 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 55 states have (on average 2.290909090909091) internal successors, (126), 39 states have internal predecessors, (126), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) Word has length 141 [2024-09-12 19:49:15,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:49:15,473 INFO L225 Difference]: With dead ends: 727 [2024-09-12 19:49:15,473 INFO L226 Difference]: Without dead ends: 679 [2024-09-12 19:49:15,474 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=528, Invalid=6612, Unknown=0, NotChecked=0, Total=7140 [2024-09-12 19:49:15,474 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 19:49:15,474 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 734 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 19:49:15,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-09-12 19:49:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 256. [2024-09-12 19:49:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 195 states have (on average 1.0717948717948718) internal successors, (209), 197 states have internal predecessors, (209), 30 states have call successors, (30), 29 states have call predecessors, (30), 28 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 19:49:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 268 transitions. [2024-09-12 19:49:15,539 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 268 transitions. Word has length 141 [2024-09-12 19:49:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:49:15,539 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 268 transitions. [2024-09-12 19:49:15,539 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 55 states have (on average 2.290909090909091) internal successors, (126), 39 states have internal predecessors, (126), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-12 19:49:15,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:49:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 268 transitions. [2024-09-12 19:49:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-09-12 19:49:15,540 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:49:15,541 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:49:15,555 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-12 19:49:15,741 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:49:15,741 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:49:15,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:49:15,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1200331146, now seen corresponding path program 7 times [2024-09-12 19:49:15,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:49:15,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925866595] [2024-09-12 19:49:15,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:49:15,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:49:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:15,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:49:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:15,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:49:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:16,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:16,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:16,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:16,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:16,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:16,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:16,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:16,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:16,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:16,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:17,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:17,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:17,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:17,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:17,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-12 19:49:17,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:49:17,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925866595] [2024-09-12 19:49:17,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925866595] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:49:17,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922108393] [2024-09-12 19:49:17,313 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 19:49:17,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:49:17,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:49:17,314 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:49:17,314 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 19:49:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:17,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-09-12 19:49:17,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:49:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-09-12 19:49:17,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:49:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-12 19:49:20,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922108393] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:49:20,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:49:20,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 51] total 60 [2024-09-12 19:49:20,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140348859] [2024-09-12 19:49:20,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:49:20,279 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-12 19:49:20,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:49:20,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-12 19:49:20,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=3337, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 19:49:20,281 INFO L87 Difference]: Start difference. First operand 256 states and 268 transitions. Second operand has 60 states, 59 states have (on average 2.288135593220339) internal successors, (135), 41 states have internal predecessors, (135), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) [2024-09-12 19:49:21,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:49:21,647 INFO L93 Difference]: Finished difference Result 746 states and 765 transitions. [2024-09-12 19:49:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 19:49:21,648 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.288135593220339) internal successors, (135), 41 states have internal predecessors, (135), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) Word has length 150 [2024-09-12 19:49:21,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:49:21,650 INFO L225 Difference]: With dead ends: 746 [2024-09-12 19:49:21,650 INFO L226 Difference]: Without dead ends: 695 [2024-09-12 19:49:21,651 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=593, Invalid=7417, Unknown=0, NotChecked=0, Total=8010 [2024-09-12 19:49:21,651 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 19:49:21,652 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 921 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 19:49:21,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2024-09-12 19:49:21,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 256. [2024-09-12 19:49:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 195 states have (on average 1.0666666666666667) internal successors, (208), 197 states have internal predecessors, (208), 30 states have call successors, (30), 29 states have call predecessors, (30), 28 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 19:49:21,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 267 transitions. [2024-09-12 19:49:21,718 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 267 transitions. Word has length 150 [2024-09-12 19:49:21,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:49:21,719 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 267 transitions. [2024-09-12 19:49:21,719 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.288135593220339) internal successors, (135), 41 states have internal predecessors, (135), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) [2024-09-12 19:49:21,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:49:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 267 transitions. [2024-09-12 19:49:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-09-12 19:49:21,721 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:49:21,721 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:49:21,735 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-12 19:49:21,922 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:49:21,922 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:49:21,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:49:21,922 INFO L85 PathProgramCache]: Analyzing trace with hash -811822389, now seen corresponding path program 2 times [2024-09-12 19:49:21,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:49:21,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946350749] [2024-09-12 19:49:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:49:21,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:49:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:22,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:49:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:49:22,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:49:22,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946350749] [2024-09-12 19:49:22,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946350749] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:49:22,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425145358] [2024-09-12 19:49:22,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:49:22,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:49:22,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:49:22,677 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:49:22,678 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 19:49:22,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:49:22,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:49:22,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-12 19:49:22,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:49:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:49:22,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:49:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:49:24,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425145358] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:49:24,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:49:24,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2024-09-12 19:49:24,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170007984] [2024-09-12 19:49:24,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:49:24,321 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-09-12 19:49:24,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:49:24,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-09-12 19:49:24,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1514, Invalid=10042, Unknown=0, NotChecked=0, Total=11556 [2024-09-12 19:49:24,323 INFO L87 Difference]: Start difference. First operand 256 states and 267 transitions. Second operand has 108 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 56 states have internal predecessors, (262), 53 states have call successors, (54), 53 states have call predecessors, (54), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:49:26,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:49:26,202 INFO L93 Difference]: Finished difference Result 575 states and 638 transitions. [2024-09-12 19:49:26,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-09-12 19:49:26,202 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 56 states have internal predecessors, (262), 53 states have call successors, (54), 53 states have call predecessors, (54), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161 [2024-09-12 19:49:26,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:49:26,204 INFO L225 Difference]: With dead ends: 575 [2024-09-12 19:49:26,205 INFO L226 Difference]: Without dead ends: 573 [2024-09-12 19:49:26,206 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7600 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3672, Invalid=21768, Unknown=0, NotChecked=0, Total=25440 [2024-09-12 19:49:26,207 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 1219 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 19:49:26,207 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 714 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 19:49:26,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-09-12 19:49:26,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 499. [2024-09-12 19:49:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 384 states have (on average 1.1041666666666667) internal successors, (424), 386 states have internal predecessors, (424), 57 states have call successors, (57), 56 states have call predecessors, (57), 55 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 19:49:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 537 transitions. [2024-09-12 19:49:26,344 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 537 transitions. Word has length 161 [2024-09-12 19:49:26,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:49:26,345 INFO L474 AbstractCegarLoop]: Abstraction has 499 states and 537 transitions. [2024-09-12 19:49:26,345 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 56 states have internal predecessors, (262), 53 states have call successors, (54), 53 states have call predecessors, (54), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:49:26,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:49:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 537 transitions. [2024-09-12 19:49:26,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-09-12 19:49:26,346 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:49:26,346 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:49:26,360 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-12 19:49:26,546 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 19:49:26,547 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:49:26,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:49:26,547 INFO L85 PathProgramCache]: Analyzing trace with hash 302615980, now seen corresponding path program 8 times [2024-09-12 19:49:26,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:49:26,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440882759] [2024-09-12 19:49:26,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:49:26,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:49:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:26,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:49:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:26,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:49:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:27,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:27,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:27,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:27,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:27,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:27,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:27,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:27,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:27,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:28,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:28,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:28,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:28,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:28,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:28,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:28,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-09-12 19:49:28,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:49:28,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440882759] [2024-09-12 19:49:28,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440882759] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:49:28,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532332209] [2024-09-12 19:49:28,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:49:28,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:49:28,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:49:28,404 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:49:28,405 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 19:49:28,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:49:28,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:49:28,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-09-12 19:49:28,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:49:28,781 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-09-12 19:49:28,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:49:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-09-12 19:49:31,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532332209] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:49:31,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:49:31,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 54] total 63 [2024-09-12 19:49:31,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604398575] [2024-09-12 19:49:31,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:49:31,624 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-09-12 19:49:31,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:49:31,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-09-12 19:49:31,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=3692, Unknown=0, NotChecked=0, Total=3906 [2024-09-12 19:49:31,625 INFO L87 Difference]: Start difference. First operand 499 states and 537 transitions. Second operand has 63 states, 61 states have (on average 2.2950819672131146) internal successors, (140), 43 states have internal predecessors, (140), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) [2024-09-12 19:49:33,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:49:33,758 INFO L93 Difference]: Finished difference Result 1707 states and 1753 transitions. [2024-09-12 19:49:33,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-12 19:49:33,760 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 61 states have (on average 2.2950819672131146) internal successors, (140), 43 states have internal predecessors, (140), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) Word has length 159 [2024-09-12 19:49:33,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:49:33,765 INFO L225 Difference]: With dead ends: 1707 [2024-09-12 19:49:33,765 INFO L226 Difference]: Without dead ends: 1653 [2024-09-12 19:49:33,766 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=630, Invalid=8300, Unknown=0, NotChecked=0, Total=8930 [2024-09-12 19:49:33,766 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 58 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 19:49:33,766 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 994 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 19:49:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2024-09-12 19:49:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 499. [2024-09-12 19:49:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 384 states have (on average 1.1015625) internal successors, (423), 386 states have internal predecessors, (423), 57 states have call successors, (57), 56 states have call predecessors, (57), 55 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 19:49:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 536 transitions. [2024-09-12 19:49:33,934 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 536 transitions. Word has length 159 [2024-09-12 19:49:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:49:33,934 INFO L474 AbstractCegarLoop]: Abstraction has 499 states and 536 transitions. [2024-09-12 19:49:33,934 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 61 states have (on average 2.2950819672131146) internal successors, (140), 43 states have internal predecessors, (140), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) [2024-09-12 19:49:33,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:49:33,935 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 536 transitions. [2024-09-12 19:49:33,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-09-12 19:49:33,936 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:49:33,936 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:49:33,949 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-12 19:49:34,136 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-12 19:49:34,137 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:49:34,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:49:34,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1059674030, now seen corresponding path program 8 times [2024-09-12 19:49:34,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:49:34,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305132915] [2024-09-12 19:49:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:49:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:49:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:34,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:49:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:34,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:49:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:34,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:34,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:34,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:35,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:35,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:35,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:35,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:35,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:35,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:35,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:35,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:35,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:35,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:35,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:36,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:36,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:36,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-09-12 19:49:36,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:49:36,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305132915] [2024-09-12 19:49:36,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305132915] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:49:36,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971308740] [2024-09-12 19:49:36,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:49:36,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:49:36,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:49:36,236 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:49:36,237 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 19:49:36,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:49:36,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:49:36,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-09-12 19:49:36,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:49:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-09-12 19:49:36,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:49:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-12 19:49:39,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971308740] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:49:39,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:49:39,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 57] total 67 [2024-09-12 19:49:39,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115953055] [2024-09-12 19:49:39,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:49:39,971 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-12 19:49:39,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:49:39,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-12 19:49:39,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=4193, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 19:49:39,972 INFO L87 Difference]: Start difference. First operand 499 states and 536 transitions. Second operand has 67 states, 65 states have (on average 2.3076923076923075) internal successors, (150), 46 states have internal predecessors, (150), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) [2024-09-12 19:49:42,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:49:42,159 INFO L93 Difference]: Finished difference Result 1762 states and 1808 transitions. [2024-09-12 19:49:42,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 19:49:42,159 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 65 states have (on average 2.3076923076923075) internal successors, (150), 46 states have internal predecessors, (150), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) Word has length 168 [2024-09-12 19:49:42,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:49:42,164 INFO L225 Difference]: With dead ends: 1762 [2024-09-12 19:49:42,164 INFO L226 Difference]: Without dead ends: 1705 [2024-09-12 19:49:42,165 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=705, Invalid=9395, Unknown=0, NotChecked=0, Total=10100 [2024-09-12 19:49:42,165 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 34 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 19:49:42,165 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 927 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 19:49:42,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2024-09-12 19:49:42,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 499. [2024-09-12 19:49:42,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 384 states have (on average 1.0989583333333333) internal successors, (422), 386 states have internal predecessors, (422), 57 states have call successors, (57), 56 states have call predecessors, (57), 55 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 19:49:42,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 535 transitions. [2024-09-12 19:49:42,328 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 535 transitions. Word has length 168 [2024-09-12 19:49:42,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:49:42,329 INFO L474 AbstractCegarLoop]: Abstraction has 499 states and 535 transitions. [2024-09-12 19:49:42,329 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 65 states have (on average 2.3076923076923075) internal successors, (150), 46 states have internal predecessors, (150), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) [2024-09-12 19:49:42,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:49:42,329 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 535 transitions. [2024-09-12 19:49:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-09-12 19:49:42,330 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:49:42,330 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:49:42,343 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-12 19:49:42,533 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 19:49:42,533 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:49:42,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:49:42,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1671761608, now seen corresponding path program 9 times [2024-09-12 19:49:42,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:49:42,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143095388] [2024-09-12 19:49:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:49:42,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:49:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:42,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:49:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:42,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:49:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:43,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:43,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:43,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:43,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:43,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:43,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:43,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:44,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:44,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:44,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:44,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:44,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:44,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:44,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:44,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:44,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:44,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:44,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-09-12 19:49:44,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:49:44,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143095388] [2024-09-12 19:49:44,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143095388] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:49:44,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430848710] [2024-09-12 19:49:44,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 19:49:44,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:49:44,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:49:44,837 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:49:44,838 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 19:49:45,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-12 19:49:45,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:49:45,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-09-12 19:49:45,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:49:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-09-12 19:49:45,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:49:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 612 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-12 19:49:48,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430848710] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:49:48,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:49:48,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 60] total 69 [2024-09-12 19:49:48,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268983717] [2024-09-12 19:49:48,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:49:48,724 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-12 19:49:48,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:49:48,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-12 19:49:48,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=4456, Unknown=0, NotChecked=0, Total=4692 [2024-09-12 19:49:48,726 INFO L87 Difference]: Start difference. First operand 499 states and 535 transitions. Second operand has 69 states, 67 states have (on average 2.298507462686567) internal successors, (154), 47 states have internal predecessors, (154), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) [2024-09-12 19:49:51,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:49:51,326 INFO L93 Difference]: Finished difference Result 1817 states and 1862 transitions. [2024-09-12 19:49:51,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-12 19:49:51,326 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 67 states have (on average 2.298507462686567) internal successors, (154), 47 states have internal predecessors, (154), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) Word has length 177 [2024-09-12 19:49:51,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:49:51,331 INFO L225 Difference]: With dead ends: 1817 [2024-09-12 19:49:51,331 INFO L226 Difference]: Without dead ends: 1757 [2024-09-12 19:49:51,332 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1159 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=740, Invalid=10180, Unknown=0, NotChecked=0, Total=10920 [2024-09-12 19:49:51,332 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 46 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 2359 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 2377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 19:49:51,332 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1249 Invalid, 2377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2359 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 19:49:51,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2024-09-12 19:49:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 499. [2024-09-12 19:49:51,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 384 states have (on average 1.0963541666666667) internal successors, (421), 386 states have internal predecessors, (421), 57 states have call successors, (57), 56 states have call predecessors, (57), 55 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 19:49:51,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 534 transitions. [2024-09-12 19:49:51,502 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 534 transitions. Word has length 177 [2024-09-12 19:49:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:49:51,503 INFO L474 AbstractCegarLoop]: Abstraction has 499 states and 534 transitions. [2024-09-12 19:49:51,503 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 67 states have (on average 2.298507462686567) internal successors, (154), 47 states have internal predecessors, (154), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) [2024-09-12 19:49:51,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:49:51,503 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 534 transitions. [2024-09-12 19:49:51,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-09-12 19:49:51,504 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:49:51,504 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:49:51,517 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-12 19:49:51,704 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:49:51,705 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:49:51,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:49:51,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1368157542, now seen corresponding path program 9 times [2024-09-12 19:49:51,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:49:51,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959606013] [2024-09-12 19:49:51,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:49:51,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:49:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:51,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:49:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:51,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:49:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:52,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:52,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:52,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:52,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:52,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:53,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:53,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:53,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:53,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:53,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:53,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:53,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:53,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:53,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:53,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:53,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:54,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:54,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:54,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:49:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:49:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-09-12 19:49:54,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:49:54,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959606013] [2024-09-12 19:49:54,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959606013] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:49:54,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800309517] [2024-09-12 19:49:54,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 19:49:54,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:49:54,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:49:54,207 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:49:54,208 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 19:49:54,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-12 19:49:54,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:49:54,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-09-12 19:49:54,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:49:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-09-12 19:49:54,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:49:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 684 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-09-12 19:49:58,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800309517] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:49:58,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:49:58,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 63] total 72 [2024-09-12 19:49:58,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078516396] [2024-09-12 19:49:58,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:49:58,463 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-12 19:49:58,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:49:58,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-12 19:49:58,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=4865, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 19:49:58,464 INFO L87 Difference]: Start difference. First operand 499 states and 534 transitions. Second operand has 72 states, 71 states have (on average 2.295774647887324) internal successors, (163), 49 states have internal predecessors, (163), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) [2024-09-12 19:50:01,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:50:01,209 INFO L93 Difference]: Finished difference Result 1869 states and 1914 transitions. [2024-09-12 19:50:01,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 19:50:01,210 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.295774647887324) internal successors, (163), 49 states have internal predecessors, (163), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) Word has length 186 [2024-09-12 19:50:01,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:50:01,214 INFO L225 Difference]: With dead ends: 1869 [2024-09-12 19:50:01,214 INFO L226 Difference]: Without dead ends: 1806 [2024-09-12 19:50:01,215 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=817, Invalid=11173, Unknown=0, NotChecked=0, Total=11990 [2024-09-12 19:50:01,215 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 78 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 2323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 19:50:01,216 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1218 Invalid, 2323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2284 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 19:50:01,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2024-09-12 19:50:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 499. [2024-09-12 19:50:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 384 states have (on average 1.09375) internal successors, (420), 386 states have internal predecessors, (420), 57 states have call successors, (57), 56 states have call predecessors, (57), 55 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 19:50:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 533 transitions. [2024-09-12 19:50:01,408 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 533 transitions. Word has length 186 [2024-09-12 19:50:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:50:01,408 INFO L474 AbstractCegarLoop]: Abstraction has 499 states and 533 transitions. [2024-09-12 19:50:01,408 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.295774647887324) internal successors, (163), 49 states have internal predecessors, (163), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) [2024-09-12 19:50:01,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:50:01,409 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 533 transitions. [2024-09-12 19:50:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-09-12 19:50:01,409 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:50:01,409 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:50:01,423 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 19:50:01,610 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-09-12 19:50:01,610 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:50:01,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:50:01,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2143756988, now seen corresponding path program 10 times [2024-09-12 19:50:01,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:50:01,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897586381] [2024-09-12 19:50:01,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:50:01,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:50:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:01,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:50:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:01,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:50:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:02,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:02,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:02,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:02,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:03,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:03,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:03,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:03,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:03,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:03,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:03,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:03,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:03,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:04,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:04,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:04,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:04,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:04,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:04,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:04,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2024-09-12 19:50:04,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:50:04,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897586381] [2024-09-12 19:50:04,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897586381] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:50:04,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839259557] [2024-09-12 19:50:04,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 19:50:04,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:50:04,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:50:04,506 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:50:04,506 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 19:50:04,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 19:50:04,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:50:04,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 176 conjuncts are in the unsatisfiable core [2024-09-12 19:50:04,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:50:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2024-09-12 19:50:04,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:50:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 760 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-12 19:50:09,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839259557] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:50:09,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:50:09,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 66] total 75 [2024-09-12 19:50:09,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342299675] [2024-09-12 19:50:09,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:50:09,123 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-09-12 19:50:09,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:50:09,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-09-12 19:50:09,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=5292, Unknown=0, NotChecked=0, Total=5550 [2024-09-12 19:50:09,124 INFO L87 Difference]: Start difference. First operand 499 states and 533 transitions. Second operand has 75 states, 73 states have (on average 2.3013698630136985) internal successors, (168), 51 states have internal predecessors, (168), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) [2024-09-12 19:50:12,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:50:12,103 INFO L93 Difference]: Finished difference Result 1921 states and 1965 transitions. [2024-09-12 19:50:12,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-12 19:50:12,103 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 73 states have (on average 2.3013698630136985) internal successors, (168), 51 states have internal predecessors, (168), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) Word has length 195 [2024-09-12 19:50:12,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:50:12,118 INFO L225 Difference]: With dead ends: 1921 [2024-09-12 19:50:12,118 INFO L226 Difference]: Without dead ends: 1855 [2024-09-12 19:50:12,119 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=858, Invalid=12252, Unknown=0, NotChecked=0, Total=13110 [2024-09-12 19:50:12,120 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 52 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 19:50:12,120 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1287 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 19:50:12,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2024-09-12 19:50:12,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 499. [2024-09-12 19:50:12,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 384 states have (on average 1.0911458333333333) internal successors, (419), 386 states have internal predecessors, (419), 57 states have call successors, (57), 56 states have call predecessors, (57), 55 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 19:50:12,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 532 transitions. [2024-09-12 19:50:12,308 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 532 transitions. Word has length 195 [2024-09-12 19:50:12,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:50:12,308 INFO L474 AbstractCegarLoop]: Abstraction has 499 states and 532 transitions. [2024-09-12 19:50:12,308 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 73 states have (on average 2.3013698630136985) internal successors, (168), 51 states have internal predecessors, (168), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) [2024-09-12 19:50:12,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:50:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 532 transitions. [2024-09-12 19:50:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-12 19:50:12,310 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:50:12,310 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:50:12,323 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-12 19:50:12,510 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-12 19:50:12,510 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:50:12,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:50:12,511 INFO L85 PathProgramCache]: Analyzing trace with hash -731797602, now seen corresponding path program 10 times [2024-09-12 19:50:12,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:50:12,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665161202] [2024-09-12 19:50:12,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:50:12,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:50:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:12,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:50:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:12,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:50:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:13,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:13,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:13,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:13,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:13,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:14,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:14,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:14,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:14,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:14,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:14,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:14,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:14,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:15,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:15,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:15,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:15,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:15,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:15,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:15,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:15,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:15,625 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 340 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-09-12 19:50:15,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:50:15,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665161202] [2024-09-12 19:50:15,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665161202] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:50:15,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168029128] [2024-09-12 19:50:15,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 19:50:15,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:50:15,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:50:15,627 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:50:15,627 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-12 19:50:15,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 19:50:15,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:50:15,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 184 conjuncts are in the unsatisfiable core [2024-09-12 19:50:15,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:50:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-09-12 19:50:16,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:50:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 840 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-09-12 19:50:20,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168029128] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:50:20,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:50:20,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 69] total 78 [2024-09-12 19:50:20,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338011505] [2024-09-12 19:50:20,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:50:20,659 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-12 19:50:20,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:50:20,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-12 19:50:20,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=5738, Unknown=0, NotChecked=0, Total=6006 [2024-09-12 19:50:20,660 INFO L87 Difference]: Start difference. First operand 499 states and 532 transitions. Second operand has 78 states, 77 states have (on average 2.2987012987012987) internal successors, (177), 53 states have internal predecessors, (177), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) [2024-09-12 19:50:24,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:50:24,000 INFO L93 Difference]: Finished difference Result 1970 states and 2014 transitions. [2024-09-12 19:50:24,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-12 19:50:24,001 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 2.2987012987012987) internal successors, (177), 53 states have internal predecessors, (177), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) Word has length 204 [2024-09-12 19:50:24,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:50:24,005 INFO L225 Difference]: With dead ends: 1970 [2024-09-12 19:50:24,005 INFO L226 Difference]: Without dead ends: 1901 [2024-09-12 19:50:24,006 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=940, Invalid=13340, Unknown=0, NotChecked=0, Total=14280 [2024-09-12 19:50:24,007 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 40 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 2688 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 19:50:24,007 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1405 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2688 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 19:50:24,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2024-09-12 19:50:24,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 499. [2024-09-12 19:50:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 384 states have (on average 1.0885416666666667) internal successors, (418), 386 states have internal predecessors, (418), 57 states have call successors, (57), 56 states have call predecessors, (57), 55 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 19:50:24,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 531 transitions. [2024-09-12 19:50:24,232 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 531 transitions. Word has length 204 [2024-09-12 19:50:24,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:50:24,232 INFO L474 AbstractCegarLoop]: Abstraction has 499 states and 531 transitions. [2024-09-12 19:50:24,232 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 2.2987012987012987) internal successors, (177), 53 states have internal predecessors, (177), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) [2024-09-12 19:50:24,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:50:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 531 transitions. [2024-09-12 19:50:24,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-09-12 19:50:24,234 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:50:24,234 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:50:24,250 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-12 19:50:24,434 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-12 19:50:24,435 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:50:24,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:50:24,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1626706384, now seen corresponding path program 11 times [2024-09-12 19:50:24,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:50:24,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782997747] [2024-09-12 19:50:24,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:50:24,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:50:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:24,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:50:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:24,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:50:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:25,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:25,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:25,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:25,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:25,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:26,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:26,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:26,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:26,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:26,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:26,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:27,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:27,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:27,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:27,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:27,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:27,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:27,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:27,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:27,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:27,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:27,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2024-09-12 19:50:27,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:50:27,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782997747] [2024-09-12 19:50:27,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782997747] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:50:27,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243302999] [2024-09-12 19:50:27,853 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 19:50:27,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:50:27,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:50:27,855 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:50:27,856 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-12 19:50:28,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-12 19:50:28,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:50:28,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-09-12 19:50:28,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:50:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2024-09-12 19:50:28,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:50:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-09-12 19:50:33,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243302999] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:50:33,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:50:33,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 72] total 81 [2024-09-12 19:50:33,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096455341] [2024-09-12 19:50:33,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:50:33,307 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-09-12 19:50:33,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:50:33,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-09-12 19:50:33,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=6200, Unknown=0, NotChecked=0, Total=6480 [2024-09-12 19:50:33,308 INFO L87 Difference]: Start difference. First operand 499 states and 531 transitions. Second operand has 81 states, 79 states have (on average 2.3037974683544302) internal successors, (182), 55 states have internal predecessors, (182), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) [2024-09-12 19:50:36,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:50:36,942 INFO L93 Difference]: Finished difference Result 2019 states and 2062 transitions. [2024-09-12 19:50:36,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-12 19:50:36,943 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 79 states have (on average 2.3037974683544302) internal successors, (182), 55 states have internal predecessors, (182), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) Word has length 213 [2024-09-12 19:50:36,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:50:36,948 INFO L225 Difference]: With dead ends: 2019 [2024-09-12 19:50:36,948 INFO L226 Difference]: Without dead ends: 1947 [2024-09-12 19:50:36,949 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1629 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=984, Invalid=14516, Unknown=0, NotChecked=0, Total=15500 [2024-09-12 19:50:36,949 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 62 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 2870 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 19:50:36,950 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1529 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2870 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 19:50:36,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2024-09-12 19:50:37,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 499. [2024-09-12 19:50:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 384 states have (on average 1.0859375) internal successors, (417), 386 states have internal predecessors, (417), 57 states have call successors, (57), 56 states have call predecessors, (57), 55 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 19:50:37,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 530 transitions. [2024-09-12 19:50:37,162 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 530 transitions. Word has length 213 [2024-09-12 19:50:37,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:50:37,162 INFO L474 AbstractCegarLoop]: Abstraction has 499 states and 530 transitions. [2024-09-12 19:50:37,163 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 79 states have (on average 2.3037974683544302) internal successors, (182), 55 states have internal predecessors, (182), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) [2024-09-12 19:50:37,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:50:37,163 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 530 transitions. [2024-09-12 19:50:37,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-09-12 19:50:37,164 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:50:37,164 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:50:37,178 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-12 19:50:37,364 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-12 19:50:37,364 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:50:37,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:50:37,365 INFO L85 PathProgramCache]: Analyzing trace with hash -69925290, now seen corresponding path program 11 times [2024-09-12 19:50:37,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:50:37,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780671523] [2024-09-12 19:50:37,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:50:37,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:50:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:37,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:50:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:37,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:50:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:38,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:38,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:38,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:38,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:39,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:39,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:39,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:39,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:39,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:39,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:40,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:40,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:40,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:40,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:40,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:40,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:40,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:40,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:40,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:40,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:41,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:41,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:41,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2024-09-12 19:50:41,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:50:41,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780671523] [2024-09-12 19:50:41,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780671523] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:50:41,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730937421] [2024-09-12 19:50:41,214 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 19:50:41,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:50:41,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:50:41,215 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:50:41,215 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-12 19:50:41,476 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-12 19:50:41,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:50:41,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 200 conjuncts are in the unsatisfiable core [2024-09-12 19:50:41,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:50:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2024-09-12 19:50:41,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:50:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-09-12 19:50:47,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730937421] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:50:47,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:50:47,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 75] total 84 [2024-09-12 19:50:47,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137704802] [2024-09-12 19:50:47,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:50:47,052 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-09-12 19:50:47,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:50:47,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-09-12 19:50:47,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=6682, Unknown=0, NotChecked=0, Total=6972 [2024-09-12 19:50:47,053 INFO L87 Difference]: Start difference. First operand 499 states and 530 transitions. Second operand has 84 states, 83 states have (on average 2.3012048192771086) internal successors, (191), 57 states have internal predecessors, (191), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) [2024-09-12 19:50:50,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:50:50,917 INFO L93 Difference]: Finished difference Result 2065 states and 2108 transitions. [2024-09-12 19:50:50,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-12 19:50:50,917 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.3012048192771086) internal successors, (191), 57 states have internal predecessors, (191), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) Word has length 222 [2024-09-12 19:50:50,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:50:50,922 INFO L225 Difference]: With dead ends: 2065 [2024-09-12 19:50:50,922 INFO L226 Difference]: Without dead ends: 1990 [2024-09-12 19:50:50,923 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1072, Invalid=15698, Unknown=0, NotChecked=0, Total=16770 [2024-09-12 19:50:50,923 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 64 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 2930 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 2970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 19:50:50,923 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1611 Invalid, 2970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 19:50:50,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2024-09-12 19:50:51,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 499. [2024-09-12 19:50:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 384 states have (on average 1.0833333333333333) internal successors, (416), 386 states have internal predecessors, (416), 57 states have call successors, (57), 56 states have call predecessors, (57), 55 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 19:50:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 529 transitions. [2024-09-12 19:50:51,166 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 529 transitions. Word has length 222 [2024-09-12 19:50:51,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:50:51,166 INFO L474 AbstractCegarLoop]: Abstraction has 499 states and 529 transitions. [2024-09-12 19:50:51,166 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.3012048192771086) internal successors, (191), 57 states have internal predecessors, (191), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) [2024-09-12 19:50:51,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:50:51,166 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 529 transitions. [2024-09-12 19:50:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-09-12 19:50:51,167 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:50:51,167 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:50:51,181 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-12 19:50:51,368 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:50:51,368 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:50:51,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:50:51,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1842040540, now seen corresponding path program 12 times [2024-09-12 19:50:51,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:50:51,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346251500] [2024-09-12 19:50:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:50:51,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:50:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:51,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:50:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:51,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:50:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:52,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:52,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:52,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:53,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:53,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:53,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:53,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:53,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:54,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:54,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:54,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:54,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:54,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:54,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:54,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:54,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:55,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:55,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:55,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:55,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:55,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:55,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:55,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:55,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:50:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:50:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2024-09-12 19:50:55,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:50:55,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346251500] [2024-09-12 19:50:55,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346251500] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:50:55,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882110979] [2024-09-12 19:50:55,637 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 19:50:55,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:50:55,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:50:55,638 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:50:55,639 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-12 19:50:55,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-12 19:50:55,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:50:55,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 208 conjuncts are in the unsatisfiable core [2024-09-12 19:50:55,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:50:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2024-09-12 19:50:56,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:51:01,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 1104 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 19:51:01,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882110979] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:51:01,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:51:01,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 78] total 87 [2024-09-12 19:51:01,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993508745] [2024-09-12 19:51:01,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:51:01,998 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-09-12 19:51:01,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:51:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-09-12 19:51:01,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=7180, Unknown=0, NotChecked=0, Total=7482 [2024-09-12 19:51:01,999 INFO L87 Difference]: Start difference. First operand 499 states and 529 transitions. Second operand has 87 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 59 states have internal predecessors, (196), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) [2024-09-12 19:51:06,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:51:06,139 INFO L93 Difference]: Finished difference Result 2111 states and 2153 transitions. [2024-09-12 19:51:06,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-12 19:51:06,139 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 59 states have internal predecessors, (196), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) Word has length 231 [2024-09-12 19:51:06,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:51:06,144 INFO L225 Difference]: With dead ends: 2111 [2024-09-12 19:51:06,144 INFO L226 Difference]: Without dead ends: 2033 [2024-09-12 19:51:06,145 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1118, Invalid=16972, Unknown=0, NotChecked=0, Total=18090 [2024-09-12 19:51:06,146 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 60 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 3059 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 3085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 19:51:06,146 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1618 Invalid, 3085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3059 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 19:51:06,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2024-09-12 19:51:06,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 499. [2024-09-12 19:51:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 384 states have (on average 1.0807291666666667) internal successors, (415), 386 states have internal predecessors, (415), 57 states have call successors, (57), 56 states have call predecessors, (57), 55 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 19:51:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 528 transitions. [2024-09-12 19:51:06,392 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 528 transitions. Word has length 231 [2024-09-12 19:51:06,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:51:06,392 INFO L474 AbstractCegarLoop]: Abstraction has 499 states and 528 transitions. [2024-09-12 19:51:06,392 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 59 states have internal predecessors, (196), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) [2024-09-12 19:51:06,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:51:06,392 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 528 transitions. [2024-09-12 19:51:06,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-09-12 19:51:06,393 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:51:06,393 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:51:06,407 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-09-12 19:51:06,593 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:51:06,594 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:51:06,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:51:06,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1400539534, now seen corresponding path program 12 times [2024-09-12 19:51:06,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:51:06,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690019105] [2024-09-12 19:51:06,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:51:06,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:51:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:06,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:51:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:06,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:51:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:07,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:07,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:07,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:08,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:08,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:08,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:08,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:09,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:09,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:09,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:09,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:09,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:09,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:10,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:10,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:10,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:10,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:10,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:10,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:10,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:10,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:10,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:10,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:11,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:11,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2024-09-12 19:51:11,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:51:11,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690019105] [2024-09-12 19:51:11,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690019105] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:51:11,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177699577] [2024-09-12 19:51:11,145 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 19:51:11,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:51:11,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:51:11,146 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:51:11,147 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-12 19:51:11,459 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-12 19:51:11,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:51:11,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 216 conjuncts are in the unsatisfiable core [2024-09-12 19:51:11,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:51:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-09-12 19:51:11,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:51:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-09-12 19:51:17,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177699577] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:51:17,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:51:17,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 81] total 90 [2024-09-12 19:51:17,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209099894] [2024-09-12 19:51:17,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:51:17,955 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-09-12 19:51:17,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:51:17,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-09-12 19:51:17,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=7697, Unknown=0, NotChecked=0, Total=8010 [2024-09-12 19:51:17,956 INFO L87 Difference]: Start difference. First operand 499 states and 528 transitions. Second operand has 90 states, 89 states have (on average 2.303370786516854) internal successors, (205), 61 states have internal predecessors, (205), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) [2024-09-12 19:51:22,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:51:22,547 INFO L93 Difference]: Finished difference Result 2154 states and 2196 transitions. [2024-09-12 19:51:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-12 19:51:22,548 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 2.303370786516854) internal successors, (205), 61 states have internal predecessors, (205), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) Word has length 240 [2024-09-12 19:51:22,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:51:22,552 INFO L225 Difference]: With dead ends: 2154 [2024-09-12 19:51:22,552 INFO L226 Difference]: Without dead ends: 2073 [2024-09-12 19:51:22,553 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1899 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1213, Invalid=18247, Unknown=0, NotChecked=0, Total=19460 [2024-09-12 19:51:22,554 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 58 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 3638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:51:22,554 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1916 Invalid, 3638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-12 19:51:22,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2024-09-12 19:51:22,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 499. [2024-09-12 19:51:22,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 384 states have (on average 1.078125) internal successors, (414), 386 states have internal predecessors, (414), 57 states have call successors, (57), 56 states have call predecessors, (57), 55 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 19:51:22,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 527 transitions. [2024-09-12 19:51:22,794 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 527 transitions. Word has length 240 [2024-09-12 19:51:22,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:51:22,794 INFO L474 AbstractCegarLoop]: Abstraction has 499 states and 527 transitions. [2024-09-12 19:51:22,794 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 2.303370786516854) internal successors, (205), 61 states have internal predecessors, (205), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) [2024-09-12 19:51:22,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:51:22,794 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 527 transitions. [2024-09-12 19:51:22,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-09-12 19:51:22,795 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:51:22,796 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:51:22,810 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-12 19:51:22,996 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-12 19:51:22,996 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:51:22,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:51:22,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1574720616, now seen corresponding path program 13 times [2024-09-12 19:51:22,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:51:22,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168974583] [2024-09-12 19:51:22,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:51:22,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:51:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:23,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:51:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:23,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:51:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:23,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:24,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:24,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:24,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:25,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:25,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:25,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:25,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:26,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:26,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:26,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:26,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:26,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:26,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:27,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:27,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:27,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:27,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:27,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:27,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:27,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:27,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:27,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:27,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:28,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:28,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1469 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2024-09-12 19:51:28,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:51:28,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168974583] [2024-09-12 19:51:28,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168974583] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:51:28,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771539659] [2024-09-12 19:51:28,145 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 19:51:28,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:51:28,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:51:28,147 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:51:28,148 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-12 19:51:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:28,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 224 conjuncts are in the unsatisfiable core [2024-09-12 19:51:28,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:51:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1469 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2024-09-12 19:51:28,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:51:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1469 backedges. 0 proven. 1300 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-09-12 19:51:35,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771539659] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:51:35,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:51:35,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 84] total 93 [2024-09-12 19:51:35,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318098683] [2024-09-12 19:51:35,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:51:35,383 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-09-12 19:51:35,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:51:35,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-09-12 19:51:35,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=8232, Unknown=0, NotChecked=0, Total=8556 [2024-09-12 19:51:35,384 INFO L87 Difference]: Start difference. First operand 499 states and 527 transitions. Second operand has 93 states, 91 states have (on average 2.3076923076923075) internal successors, (210), 63 states have internal predecessors, (210), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) [2024-09-12 19:51:40,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:51:40,158 INFO L93 Difference]: Finished difference Result 2197 states and 2238 transitions. [2024-09-12 19:51:40,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-12 19:51:40,158 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 91 states have (on average 2.3076923076923075) internal successors, (210), 63 states have internal predecessors, (210), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) Word has length 249 [2024-09-12 19:51:40,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:51:40,163 INFO L225 Difference]: With dead ends: 2197 [2024-09-12 19:51:40,163 INFO L226 Difference]: Without dead ends: 2113 [2024-09-12 19:51:40,165 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1260, Invalid=19620, Unknown=0, NotChecked=0, Total=20880 [2024-09-12 19:51:40,165 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 62 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 3298 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 19:51:40,165 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1791 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3298 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 19:51:40,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2024-09-12 19:51:40,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 499. [2024-09-12 19:51:40,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 384 states have (on average 1.0755208333333333) internal successors, (413), 386 states have internal predecessors, (413), 57 states have call successors, (57), 56 states have call predecessors, (57), 55 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 19:51:40,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 526 transitions. [2024-09-12 19:51:40,416 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 526 transitions. Word has length 249 [2024-09-12 19:51:40,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:51:40,416 INFO L474 AbstractCegarLoop]: Abstraction has 499 states and 526 transitions. [2024-09-12 19:51:40,416 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 91 states have (on average 2.3076923076923075) internal successors, (210), 63 states have internal predecessors, (210), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) [2024-09-12 19:51:40,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:51:40,417 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 526 transitions. [2024-09-12 19:51:40,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-09-12 19:51:40,418 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:51:40,418 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:51:40,432 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-09-12 19:51:40,618 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-12 19:51:40,618 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:51:40,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:51:40,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1179529542, now seen corresponding path program 13 times [2024-09-12 19:51:40,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:51:40,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086773612] [2024-09-12 19:51:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:51:40,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:51:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:41,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:51:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:41,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:51:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:41,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:41,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:42,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:42,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:42,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:43,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:43,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:43,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:43,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:44,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:44,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:44,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:44,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:44,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:44,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:45,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:45,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:45,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:45,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:45,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:45,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:45,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:45,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:45,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:45,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:46,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:46,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:51:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1586 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2024-09-12 19:51:46,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:51:46,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086773612] [2024-09-12 19:51:46,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086773612] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:51:46,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133534276] [2024-09-12 19:51:46,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 19:51:46,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:51:46,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:51:46,150 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:51:46,151 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-12 19:51:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:51:46,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 232 conjuncts are in the unsatisfiable core [2024-09-12 19:51:46,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:51:46,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1586 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2024-09-12 19:51:46,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:51:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1586 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-09-12 19:51:53,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133534276] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:51:53,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:51:53,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 87] total 96 [2024-09-12 19:51:53,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785942530] [2024-09-12 19:51:53,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:51:53,886 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-12 19:51:53,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:51:53,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-12 19:51:53,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=8785, Unknown=0, NotChecked=0, Total=9120 [2024-09-12 19:51:53,887 INFO L87 Difference]: Start difference. First operand 499 states and 526 transitions. Second operand has 96 states, 95 states have (on average 2.305263157894737) internal successors, (219), 65 states have internal predecessors, (219), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) [2024-09-12 19:51:59,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:51:59,159 INFO L93 Difference]: Finished difference Result 2237 states and 2278 transitions. [2024-09-12 19:51:59,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-12 19:51:59,160 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.305263157894737) internal successors, (219), 65 states have internal predecessors, (219), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) Word has length 258 [2024-09-12 19:51:59,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:51:59,165 INFO L225 Difference]: With dead ends: 2237 [2024-09-12 19:51:59,165 INFO L226 Difference]: Without dead ends: 2150 [2024-09-12 19:51:59,167 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1361, Invalid=20989, Unknown=0, NotChecked=0, Total=22350 [2024-09-12 19:51:59,167 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 68 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 4066 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 4103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:51:59,167 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2144 Invalid, 4103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4066 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-12 19:51:59,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2024-09-12 19:51:59,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 499. [2024-09-12 19:51:59,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 384 states have (on average 1.0729166666666667) internal successors, (412), 386 states have internal predecessors, (412), 57 states have call successors, (57), 56 states have call predecessors, (57), 55 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 19:51:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 525 transitions. [2024-09-12 19:51:59,445 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 525 transitions. Word has length 258 [2024-09-12 19:51:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:51:59,445 INFO L474 AbstractCegarLoop]: Abstraction has 499 states and 525 transitions. [2024-09-12 19:51:59,445 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.305263157894737) internal successors, (219), 65 states have internal predecessors, (219), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) [2024-09-12 19:51:59,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:51:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 525 transitions. [2024-09-12 19:51:59,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-09-12 19:51:59,446 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:51:59,447 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:51:59,461 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-12 19:51:59,647 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-12 19:51:59,647 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:51:59,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:51:59,647 INFO L85 PathProgramCache]: Analyzing trace with hash -332209548, now seen corresponding path program 14 times [2024-09-12 19:51:59,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:51:59,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837806192] [2024-09-12 19:51:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:51:59,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:51:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:00,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:52:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:00,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:52:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:00,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:01,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:01,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:01,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:02,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:02,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:02,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:02,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:03,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:03,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:03,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:03,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:04,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:04,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:04,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:04,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:04,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:04,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:04,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:05,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:05,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:05,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:05,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:05,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:05,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:05,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:05,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:05,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1708 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2024-09-12 19:52:05,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:52:05,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837806192] [2024-09-12 19:52:05,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837806192] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:52:05,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089102038] [2024-09-12 19:52:05,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:52:05,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:52:05,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:52:05,760 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:52:05,761 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-12 19:52:06,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:52:06,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:52:06,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 240 conjuncts are in the unsatisfiable core [2024-09-12 19:52:06,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:52:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1708 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2024-09-12 19:52:06,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:52:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1708 backedges. 0 proven. 1512 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-09-12 19:52:14,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089102038] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:52:14,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:52:14,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 90] total 99 [2024-09-12 19:52:14,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998206718] [2024-09-12 19:52:14,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:52:14,011 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-09-12 19:52:14,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:52:14,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-09-12 19:52:14,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=9356, Unknown=0, NotChecked=0, Total=9702 [2024-09-12 19:52:14,012 INFO L87 Difference]: Start difference. First operand 499 states and 525 transitions. Second operand has 99 states, 97 states have (on average 2.3092783505154637) internal successors, (224), 67 states have internal predecessors, (224), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) [2024-09-12 19:52:19,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:52:19,722 INFO L93 Difference]: Finished difference Result 2277 states and 2317 transitions. [2024-09-12 19:52:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-12 19:52:19,722 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 97 states have (on average 2.3092783505154637) internal successors, (224), 67 states have internal predecessors, (224), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) Word has length 267 [2024-09-12 19:52:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:52:19,727 INFO L225 Difference]: With dead ends: 2277 [2024-09-12 19:52:19,727 INFO L226 Difference]: Without dead ends: 2187 [2024-09-12 19:52:19,729 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1410, Invalid=22460, Unknown=0, NotChecked=0, Total=23870 [2024-09-12 19:52:19,729 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 84 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 4523 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 4560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:52:19,729 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 2374 Invalid, 4560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4523 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-12 19:52:19,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2024-09-12 19:52:20,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 499. [2024-09-12 19:52:20,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 384 states have (on average 1.0703125) internal successors, (411), 386 states have internal predecessors, (411), 57 states have call successors, (57), 56 states have call predecessors, (57), 55 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 19:52:20,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 524 transitions. [2024-09-12 19:52:20,008 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 524 transitions. Word has length 267 [2024-09-12 19:52:20,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:52:20,008 INFO L474 AbstractCegarLoop]: Abstraction has 499 states and 524 transitions. [2024-09-12 19:52:20,009 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 97 states have (on average 2.3092783505154637) internal successors, (224), 67 states have internal predecessors, (224), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) [2024-09-12 19:52:20,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:52:20,009 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 524 transitions. [2024-09-12 19:52:20,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-09-12 19:52:20,010 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:52:20,010 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:52:20,025 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-09-12 19:52:20,210 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-12 19:52:20,211 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 19:52:20,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:52:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash 649330046, now seen corresponding path program 14 times [2024-09-12 19:52:20,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:52:20,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808275506] [2024-09-12 19:52:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:52:20,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:52:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:20,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:52:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:20,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 19:52:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:21,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:21,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:22,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:22,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:22,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:23,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:23,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:23,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:23,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:24,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:24,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:24,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:24,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:25,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:25,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:25,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:25,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:25,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:25,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:25,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:26,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:26,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:26,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:26,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:26,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:26,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:26,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:26,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:26,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:52:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:52:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1834 backedges. 0 proven. 644 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2024-09-12 19:52:26,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:52:26,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808275506] [2024-09-12 19:52:26,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808275506] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:52:26,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664428363] [2024-09-12 19:52:26,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:52:26,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:52:26,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:52:26,832 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:52:26,832 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-12 19:52:27,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:52:27,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:52:27,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 248 conjuncts are in the unsatisfiable core [2024-09-12 19:52:27,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:52:27,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1834 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2024-09-12 19:52:27,565 INFO L327 TraceCheckSpWp]: Computing backward predicates...