./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum01-2.i --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/loops/sum01-2.i -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 5a3f2d13c78d25176694a62cbb92a7cb676735e2350dda904e35c5c69ea362e5 --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 17:50:24,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 17:50:24,610 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 17:50:24,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 17:50:24,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 17:50:24,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 17:50:24,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 17:50:24,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 17:50:24,650 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 17:50:24,652 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 17:50:24,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 17:50:24,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 17:50:24,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 17:50:24,653 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 17:50:24,655 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 17:50:24,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 17:50:24,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 17:50:24,656 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 17:50:24,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 17:50:24,657 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 17:50:24,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 17:50:24,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 17:50:24,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 17:50:24,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 17:50:24,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 17:50:24,660 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 17:50:24,660 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 17:50:24,661 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 17:50:24,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 17:50:24,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 17:50:24,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 17:50:24,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 17:50:24,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 17:50:24,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 17:50:24,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 17:50:24,664 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 17:50:24,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 17:50:24,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 17:50:24,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 17:50:24,664 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 17:50:24,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 17:50:24,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 17:50:24,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a3f2d13c78d25176694a62cbb92a7cb676735e2350dda904e35c5c69ea362e5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 17:50:25,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 17:50:25,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 17:50:25,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 17:50:25,072 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 17:50:25,073 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 17:50:25,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops/sum01-2.i [2024-09-12 17:50:26,675 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 17:50:26,878 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 17:50:26,879 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops/sum01-2.i [2024-09-12 17:50:26,888 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/75d78440f/d1d32b94d1284ec99c5d5019619c81f0/FLAG3eaa795d5 [2024-09-12 17:50:26,910 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/75d78440f/d1d32b94d1284ec99c5d5019619c81f0 [2024-09-12 17:50:26,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 17:50:26,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 17:50:26,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 17:50:26,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 17:50:26,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 17:50:26,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 05:50:26" (1/1) ... [2024-09-12 17:50:26,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293af70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:26, skipping insertion in model container [2024-09-12 17:50:26,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 05:50:26" (1/1) ... [2024-09-12 17:50:26,953 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 17:50:27,130 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops/sum01-2.i[849,862] [2024-09-12 17:50:27,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 17:50:27,171 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 17:50:27,184 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops/sum01-2.i[849,862] [2024-09-12 17:50:27,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 17:50:27,205 INFO L204 MainTranslator]: Completed translation [2024-09-12 17:50:27,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:27 WrapperNode [2024-09-12 17:50:27,206 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 17:50:27,207 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 17:50:27,207 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 17:50:27,208 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 17:50:27,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:27" (1/1) ... [2024-09-12 17:50:27,221 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:27" (1/1) ... [2024-09-12 17:50:27,227 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 17:50:27,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 17:50:27,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 17:50:27,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 17:50:27,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 17:50:27,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:27" (1/1) ... [2024-09-12 17:50:27,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:27" (1/1) ... [2024-09-12 17:50:27,240 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:27" (1/1) ... [2024-09-12 17:50:27,255 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 17:50:27,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:27" (1/1) ... [2024-09-12 17:50:27,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:27" (1/1) ... [2024-09-12 17:50:27,259 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:27" (1/1) ... [2024-09-12 17:50:27,262 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:27" (1/1) ... [2024-09-12 17:50:27,263 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:27" (1/1) ... [2024-09-12 17:50:27,264 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:27" (1/1) ... [2024-09-12 17:50:27,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 17:50:27,270 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 17:50:27,270 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 17:50:27,270 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 17:50:27,271 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:27" (1/1) ... [2024-09-12 17:50:27,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 17:50:27,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:50:27,304 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 17:50:27,308 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 17:50:27,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 17:50:27,353 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 17:50:27,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 17:50:27,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 17:50:27,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 17:50:27,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 17:50:27,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 17:50:27,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 17:50:27,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 17:50:27,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 17:50:27,422 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 17:50:27,424 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 17:50:27,566 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-09-12 17:50:27,566 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 17:50:27,597 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 17:50:27,597 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 17:50:27,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 05:50:27 BoogieIcfgContainer [2024-09-12 17:50:27,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 17:50:27,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 17:50:27,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 17:50:27,604 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 17:50:27,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 05:50:26" (1/3) ... [2024-09-12 17:50:27,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1bc8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 05:50:27, skipping insertion in model container [2024-09-12 17:50:27,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:50:27" (2/3) ... [2024-09-12 17:50:27,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1bc8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 05:50:27, skipping insertion in model container [2024-09-12 17:50:27,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 05:50:27" (3/3) ... [2024-09-12 17:50:27,608 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2024-09-12 17:50:27,631 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 17:50:27,631 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-09-12 17:50:27,689 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 17:50:27,696 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;@1c449837, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 17:50:27,697 INFO L337 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-09-12 17:50:27,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 16 states have (on average 1.6875) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 17:50:27,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-12 17:50:27,716 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:27,717 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:27,718 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:27,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:27,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1922183187, now seen corresponding path program 1 times [2024-09-12 17:50:27,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:27,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246573040] [2024-09-12 17:50:27,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:27,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:27,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:27,981 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 17:50:27,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:27,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246573040] [2024-09-12 17:50:27,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246573040] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:50:27,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 17:50:27,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 17:50:27,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142937075] [2024-09-12 17:50:27,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:50:27,990 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 17:50:27,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:28,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 17:50:28,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 17:50:28,020 INFO L87 Difference]: Start difference. First operand has 30 states, 16 states have (on average 1.6875) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:28,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:28,083 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2024-09-12 17:50:28,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 17:50:28,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2024-09-12 17:50:28,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:28,094 INFO L225 Difference]: With dead ends: 57 [2024-09-12 17:50:28,094 INFO L226 Difference]: Without dead ends: 32 [2024-09-12 17:50:28,099 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 17:50:28,105 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:28,107 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:50:28,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-12 17:50:28,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2024-09-12 17:50:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.5) internal successors, (24), 22 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:28,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-12 17:50:28,148 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 8 [2024-09-12 17:50:28,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:28,149 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-12 17:50:28,149 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:28,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:28,150 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-12 17:50:28,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-12 17:50:28,151 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:28,151 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:28,152 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 17:50:28,152 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:28,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:28,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1922183236, now seen corresponding path program 1 times [2024-09-12 17:50:28,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:28,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332825626] [2024-09-12 17:50:28,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:28,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:28,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:28,209 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 17:50:28,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:28,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332825626] [2024-09-12 17:50:28,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332825626] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:50:28,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 17:50:28,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 17:50:28,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627514428] [2024-09-12 17:50:28,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:50:28,212 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 17:50:28,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:28,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 17:50:28,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 17:50:28,216 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:28,249 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2024-09-12 17:50:28,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 17:50:28,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2024-09-12 17:50:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:28,252 INFO L225 Difference]: With dead ends: 27 [2024-09-12 17:50:28,253 INFO L226 Difference]: Without dead ends: 26 [2024-09-12 17:50:28,253 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 17:50:28,256 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:28,257 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:50:28,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-12 17:50:28,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-12 17:50:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.4375) internal successors, (23), 21 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2024-09-12 17:50:28,272 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 8 [2024-09-12 17:50:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:28,273 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2024-09-12 17:50:28,273 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:28,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:28,274 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2024-09-12 17:50:28,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-12 17:50:28,274 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:28,274 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:28,274 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 17:50:28,275 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:28,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:28,277 INFO L85 PathProgramCache]: Analyzing trace with hash 541861892, now seen corresponding path program 1 times [2024-09-12 17:50:28,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:28,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586367950] [2024-09-12 17:50:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:28,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:28,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:28,339 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 17:50:28,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:28,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586367950] [2024-09-12 17:50:28,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586367950] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:50:28,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 17:50:28,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 17:50:28,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805755832] [2024-09-12 17:50:28,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:50:28,343 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 17:50:28,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:28,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 17:50:28,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 17:50:28,345 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:28,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:28,377 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2024-09-12 17:50:28,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 17:50:28,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-09-12 17:50:28,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:28,379 INFO L225 Difference]: With dead ends: 26 [2024-09-12 17:50:28,379 INFO L226 Difference]: Without dead ends: 25 [2024-09-12 17:50:28,380 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 17:50:28,380 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:28,381 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 23 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:50:28,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-12 17:50:28,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-12 17:50:28,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-09-12 17:50:28,391 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 9 [2024-09-12 17:50:28,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:28,392 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-09-12 17:50:28,392 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:28,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:28,393 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-09-12 17:50:28,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 17:50:28,393 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:28,393 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:28,394 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 17:50:28,394 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:28,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:28,394 INFO L85 PathProgramCache]: Analyzing trace with hash -382102737, now seen corresponding path program 1 times [2024-09-12 17:50:28,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:28,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578216828] [2024-09-12 17:50:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:28,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:28,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:28,506 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 17:50:28,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:28,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578216828] [2024-09-12 17:50:28,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578216828] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:50:28,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 17:50:28,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 17:50:28,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33420730] [2024-09-12 17:50:28,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:50:28,512 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 17:50:28,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:28,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 17:50:28,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 17:50:28,513 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:28,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:28,604 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2024-09-12 17:50:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 17:50:28,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-12 17:50:28,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:28,605 INFO L225 Difference]: With dead ends: 29 [2024-09-12 17:50:28,605 INFO L226 Difference]: Without dead ends: 27 [2024-09-12 17:50:28,605 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 17:50:28,606 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:28,607 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 44 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:50:28,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-12 17:50:28,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-12 17:50:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 22 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-12 17:50:28,620 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 10 [2024-09-12 17:50:28,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:28,621 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-12 17:50:28,621 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:28,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:28,630 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-12 17:50:28,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 17:50:28,631 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:28,631 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:28,631 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 17:50:28,631 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:28,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:28,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1314312376, now seen corresponding path program 1 times [2024-09-12 17:50:28,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:28,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320718735] [2024-09-12 17:50:28,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:28,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:28,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:28,789 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 17:50:28,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:28,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320718735] [2024-09-12 17:50:28,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320718735] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:50:28,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 17:50:28,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 17:50:28,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333229434] [2024-09-12 17:50:28,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:50:28,791 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 17:50:28,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:28,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 17:50:28,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 17:50:28,793 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 17:50:28,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:28,879 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2024-09-12 17:50:28,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 17:50:28,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 13 [2024-09-12 17:50:28,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:28,881 INFO L225 Difference]: With dead ends: 34 [2024-09-12 17:50:28,881 INFO L226 Difference]: Without dead ends: 27 [2024-09-12 17:50:28,882 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 17:50:28,882 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:28,883 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 47 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:50:28,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-12 17:50:28,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-12 17:50:28,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 22 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:28,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2024-09-12 17:50:28,901 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 13 [2024-09-12 17:50:28,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:28,902 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2024-09-12 17:50:28,902 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 17:50:28,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:28,902 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2024-09-12 17:50:28,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 17:50:28,903 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:28,903 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:28,903 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 17:50:28,903 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:28,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:28,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1559247284, now seen corresponding path program 1 times [2024-09-12 17:50:28,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:28,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695048462] [2024-09-12 17:50:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:28,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:28,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:28,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:28,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695048462] [2024-09-12 17:50:28,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695048462] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:50:28,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842539713] [2024-09-12 17:50:28,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:28,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:28,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:50:28,960 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 17:50:28,961 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 17:50:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:28,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 17:50:29,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:50:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:29,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 17:50:29,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842539713] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:50:29,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 17:50:29,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-09-12 17:50:29,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296242469] [2024-09-12 17:50:29,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:50:29,041 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 17:50:29,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:29,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 17:50:29,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 17:50:29,042 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:29,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:29,061 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2024-09-12 17:50:29,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 17:50:29,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-12 17:50:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:29,062 INFO L225 Difference]: With dead ends: 27 [2024-09-12 17:50:29,063 INFO L226 Difference]: Without dead ends: 26 [2024-09-12 17:50:29,063 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 17:50:29,064 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:29,064 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:50:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-12 17:50:29,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-12 17:50:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2024-09-12 17:50:29,083 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 13 [2024-09-12 17:50:29,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:29,084 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2024-09-12 17:50:29,084 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:29,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:29,086 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2024-09-12 17:50:29,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-12 17:50:29,087 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:29,087 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:29,105 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 17:50:29,288 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 17:50:29,288 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:29,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:29,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1092025497, now seen corresponding path program 1 times [2024-09-12 17:50:29,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:29,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076342058] [2024-09-12 17:50:29,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:29,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:29,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:29,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:29,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:29,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076342058] [2024-09-12 17:50:29,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076342058] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:50:29,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674553138] [2024-09-12 17:50:29,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:29,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:29,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:50:29,354 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 17:50:29,356 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 17:50:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:29,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 17:50:29,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:50:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:29,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:50:29,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:29,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674553138] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:50:29,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:50:29,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-09-12 17:50:29,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686294207] [2024-09-12 17:50:29,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:50:29,454 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 17:50:29,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:29,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 17:50:29,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 17:50:29,455 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:29,505 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2024-09-12 17:50:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 17:50:29,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-09-12 17:50:29,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:29,508 INFO L225 Difference]: With dead ends: 53 [2024-09-12 17:50:29,508 INFO L226 Difference]: Without dead ends: 52 [2024-09-12 17:50:29,508 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 17:50:29,509 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:29,509 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 77 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:50:29,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-12 17:50:29,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2024-09-12 17:50:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 34 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:29,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2024-09-12 17:50:29,528 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 14 [2024-09-12 17:50:29,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:29,528 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2024-09-12 17:50:29,528 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:29,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:29,529 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2024-09-12 17:50:29,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 17:50:29,529 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:29,530 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:29,546 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 17:50:29,730 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 17:50:29,731 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:29,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:29,731 INFO L85 PathProgramCache]: Analyzing trace with hash 506949070, now seen corresponding path program 1 times [2024-09-12 17:50:29,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:29,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255565658] [2024-09-12 17:50:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:29,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:29,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:29,785 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 17:50:29,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:29,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255565658] [2024-09-12 17:50:29,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255565658] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:50:29,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483177339] [2024-09-12 17:50:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:29,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:29,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:50:29,788 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 17:50:29,790 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 17:50:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:29,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 17:50:29,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:50:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:29,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 17:50:29,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483177339] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:50:29,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 17:50:29,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-12 17:50:29,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678134671] [2024-09-12 17:50:29,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:50:29,859 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 17:50:29,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:29,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 17:50:29,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 17:50:29,860 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:29,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:29,911 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2024-09-12 17:50:29,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 17:50:29,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-09-12 17:50:29,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:29,914 INFO L225 Difference]: With dead ends: 39 [2024-09-12 17:50:29,915 INFO L226 Difference]: Without dead ends: 38 [2024-09-12 17:50:29,915 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 17:50:29,916 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:29,918 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:50:29,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-12 17:50:29,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-09-12 17:50:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 33 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-09-12 17:50:29,938 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 15 [2024-09-12 17:50:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:29,938 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-09-12 17:50:29,938 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:29,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:29,939 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-09-12 17:50:29,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 17:50:29,940 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:29,940 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:29,957 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 17:50:30,141 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-12 17:50:30,142 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:30,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:30,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1464447957, now seen corresponding path program 1 times [2024-09-12 17:50:30,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:30,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940875037] [2024-09-12 17:50:30,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:30,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:30,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:30,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:30,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:30,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940875037] [2024-09-12 17:50:30,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940875037] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:50:30,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764810293] [2024-09-12 17:50:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:30,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:30,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:50:30,251 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 17:50:30,252 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 17:50:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:30,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 17:50:30,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:50:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:30,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:50:30,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:30,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764810293] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:50:30,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:50:30,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-09-12 17:50:30,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533461641] [2024-09-12 17:50:30,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:50:30,400 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 17:50:30,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:30,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 17:50:30,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 17:50:30,401 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:30,465 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2024-09-12 17:50:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 17:50:30,466 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-12 17:50:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:30,466 INFO L225 Difference]: With dead ends: 41 [2024-09-12 17:50:30,467 INFO L226 Difference]: Without dead ends: 40 [2024-09-12 17:50:30,467 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 17:50:30,468 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:30,468 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:50:30,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-12 17:50:30,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-12 17:50:30,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:30,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2024-09-12 17:50:30,481 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 16 [2024-09-12 17:50:30,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:30,483 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2024-09-12 17:50:30,483 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:30,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:30,483 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2024-09-12 17:50:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 17:50:30,484 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:30,484 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 17:50:30,499 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-12 17:50:30,684 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:30,685 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:30,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:30,685 INFO L85 PathProgramCache]: Analyzing trace with hash -6619719, now seen corresponding path program 1 times [2024-09-12 17:50:30,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:30,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917698519] [2024-09-12 17:50:30,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:30,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:30,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:30,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:30,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917698519] [2024-09-12 17:50:30,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917698519] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:50:30,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570030525] [2024-09-12 17:50:30,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:30,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:30,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:50:30,902 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 17:50:30,904 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 17:50:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:30,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 17:50:30,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:50:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:31,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:50:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:31,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570030525] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:50:31,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:50:31,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-09-12 17:50:31,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737041795] [2024-09-12 17:50:31,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:50:31,264 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 17:50:31,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:31,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 17:50:31,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-09-12 17:50:31,266 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 19 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:31,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:31,468 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2024-09-12 17:50:31,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 17:50:31,468 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 19 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 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 17:50:31,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:31,469 INFO L225 Difference]: With dead ends: 50 [2024-09-12 17:50:31,469 INFO L226 Difference]: Without dead ends: 40 [2024-09-12 17:50:31,470 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2024-09-12 17:50:31,470 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:31,471 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 93 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:50:31,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-12 17:50:31,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-12 17:50:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:31,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-09-12 17:50:31,480 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 18 [2024-09-12 17:50:31,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:31,480 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-09-12 17:50:31,480 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 19 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:31,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:31,481 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-09-12 17:50:31,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 17:50:31,482 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:31,482 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:31,498 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 17:50:31,685 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-12 17:50:31,686 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:31,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:31,686 INFO L85 PathProgramCache]: Analyzing trace with hash -114005735, now seen corresponding path program 2 times [2024-09-12 17:50:31,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:31,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696556661] [2024-09-12 17:50:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:31,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:31,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 17:50:31,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:31,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696556661] [2024-09-12 17:50:31,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696556661] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:50:31,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899100908] [2024-09-12 17:50:31,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 17:50:31,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:31,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:50:31,965 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 17:50:31,974 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 17:50:32,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 17:50:32,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:50:32,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-12 17:50:32,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:50:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:32,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:50:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:32,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899100908] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:50:32,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:50:32,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 32 [2024-09-12 17:50:32,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719144749] [2024-09-12 17:50:32,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:50:32,606 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 17:50:32,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:32,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 17:50:32,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=866, Unknown=0, NotChecked=0, Total=992 [2024-09-12 17:50:32,607 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 32 states, 32 states have (on average 1.875) internal successors, (60), 30 states have internal predecessors, (60), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:33,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:33,046 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-09-12 17:50:33,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 17:50:33,047 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 30 states have internal predecessors, (60), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-09-12 17:50:33,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:33,049 INFO L225 Difference]: With dead ends: 43 [2024-09-12 17:50:33,049 INFO L226 Difference]: Without dead ends: 33 [2024-09-12 17:50:33,050 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=1717, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 17:50:33,050 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:33,051 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 67 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 17:50:33,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-12 17:50:33,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-12 17:50:33,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:33,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2024-09-12 17:50:33,063 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 28 [2024-09-12 17:50:33,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:33,064 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2024-09-12 17:50:33,064 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 30 states have internal predecessors, (60), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:33,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:33,064 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2024-09-12 17:50:33,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-12 17:50:33,065 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:33,065 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:33,083 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-12 17:50:33,266 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 17:50:33,266 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:33,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:33,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1874753318, now seen corresponding path program 2 times [2024-09-12 17:50:33,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:33,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581696920] [2024-09-12 17:50:33,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:33,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:33,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:33,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:33,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581696920] [2024-09-12 17:50:33,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581696920] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:50:33,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438675741] [2024-09-12 17:50:33,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 17:50:33,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:33,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:50:33,357 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 17:50:33,359 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 17:50:33,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 17:50:33,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:50:33,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 17:50:33,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:50:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:33,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:50:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:33,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438675741] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:50:33,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:50:33,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-09-12 17:50:33,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333461363] [2024-09-12 17:50:33,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:50:33,525 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 17:50:33,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:33,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 17:50:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-09-12 17:50:33,526 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:33,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:33,574 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2024-09-12 17:50:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 17:50:33,575 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-09-12 17:50:33,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:33,576 INFO L225 Difference]: With dead ends: 67 [2024-09-12 17:50:33,576 INFO L226 Difference]: Without dead ends: 66 [2024-09-12 17:50:33,577 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-09-12 17:50:33,578 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:33,578 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 58 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:50:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-12 17:50:33,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2024-09-12 17:50:33,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.125) internal successors, (63), 57 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:33,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2024-09-12 17:50:33,603 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 29 [2024-09-12 17:50:33,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:33,603 INFO L474 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2024-09-12 17:50:33,604 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:33,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:33,604 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2024-09-12 17:50:33,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-12 17:50:33,605 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:33,605 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:33,621 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 17:50:33,806 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:33,806 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:33,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2046676010, now seen corresponding path program 2 times [2024-09-12 17:50:33,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:33,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865216430] [2024-09-12 17:50:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:33,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:33,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:33,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:33,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865216430] [2024-09-12 17:50:33,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865216430] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:50:33,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902636198] [2024-09-12 17:50:33,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 17:50:33,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:33,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:50:33,931 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 17:50:33,933 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 17:50:33,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-12 17:50:33,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:50:33,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 17:50:33,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:50:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-12 17:50:34,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:50:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-12 17:50:34,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902636198] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:50:34,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:50:34,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 17 [2024-09-12 17:50:34,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373629813] [2024-09-12 17:50:34,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:50:34,091 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 17:50:34,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:34,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 17:50:34,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-09-12 17:50:34,092 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:34,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:34,276 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2024-09-12 17:50:34,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 17:50:34,277 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-09-12 17:50:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:34,277 INFO L225 Difference]: With dead ends: 61 [2024-09-12 17:50:34,278 INFO L226 Difference]: Without dead ends: 60 [2024-09-12 17:50:34,278 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2024-09-12 17:50:34,279 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:34,279 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:50:34,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-12 17:50:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-12 17:50:34,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 56 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2024-09-12 17:50:34,293 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 31 [2024-09-12 17:50:34,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:34,293 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2024-09-12 17:50:34,293 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:34,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:34,294 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2024-09-12 17:50:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 17:50:34,296 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:34,296 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:34,313 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 17:50:34,497 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:34,497 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:34,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:34,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1501509370, now seen corresponding path program 3 times [2024-09-12 17:50:34,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:34,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864136686] [2024-09-12 17:50:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:34,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:34,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:34,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:34,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864136686] [2024-09-12 17:50:34,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864136686] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:50:34,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104612478] [2024-09-12 17:50:34,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 17:50:34,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:34,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:50:34,671 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 17:50:34,673 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 17:50:34,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 17:50:34,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:50:34,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 17:50:34,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:50:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:34,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:50:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:35,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104612478] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:50:35,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:50:35,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-09-12 17:50:35,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133064420] [2024-09-12 17:50:35,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:50:35,092 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 17:50:35,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:35,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 17:50:35,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-09-12 17:50:35,093 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 25 states, 24 states have (on average 4.833333333333333) internal successors, (116), 25 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:35,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:35,185 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2024-09-12 17:50:35,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 17:50:35,185 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.833333333333333) internal successors, (116), 25 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-09-12 17:50:35,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:35,186 INFO L225 Difference]: With dead ends: 121 [2024-09-12 17:50:35,186 INFO L226 Difference]: Without dead ends: 120 [2024-09-12 17:50:35,187 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-09-12 17:50:35,187 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:35,187 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 93 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:50:35,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-12 17:50:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-09-12 17:50:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.0086206896551724) internal successors, (117), 116 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2024-09-12 17:50:35,216 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 59 [2024-09-12 17:50:35,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:35,217 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2024-09-12 17:50:35,217 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.833333333333333) internal successors, (116), 25 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:35,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:35,218 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2024-09-12 17:50:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-09-12 17:50:35,222 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:35,222 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:35,239 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 17:50:35,423 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 17:50:35,423 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:35,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:35,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1195758790, now seen corresponding path program 4 times [2024-09-12 17:50:35,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:35,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246632094] [2024-09-12 17:50:35,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:35,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:35,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:35,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:35,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246632094] [2024-09-12 17:50:35,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246632094] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:50:35,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27477199] [2024-09-12 17:50:35,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 17:50:35,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:35,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:50:35,976 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 17:50:35,978 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 17:50:36,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 17:50:36,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:50:36,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 17:50:36,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:50:36,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:36,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:50:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:36,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27477199] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:50:36,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:50:36,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2024-09-12 17:50:36,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136426181] [2024-09-12 17:50:36,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:50:36,975 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-12 17:50:36,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:36,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-12 17:50:36,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 17:50:36,977 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand has 49 states, 48 states have (on average 4.916666666666667) internal successors, (236), 49 states have internal predecessors, (236), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:37,206 INFO L93 Difference]: Finished difference Result 241 states and 264 transitions. [2024-09-12 17:50:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-12 17:50:37,207 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 4.916666666666667) internal successors, (236), 49 states have internal predecessors, (236), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2024-09-12 17:50:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:37,208 INFO L225 Difference]: With dead ends: 241 [2024-09-12 17:50:37,208 INFO L226 Difference]: Without dead ends: 240 [2024-09-12 17:50:37,209 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 17:50:37,210 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:37,210 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 150 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:50:37,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-09-12 17:50:37,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-09-12 17:50:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 236 states have (on average 1.0042372881355932) internal successors, (237), 236 states have internal predecessors, (237), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2024-09-12 17:50:37,250 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 119 [2024-09-12 17:50:37,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:37,251 INFO L474 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2024-09-12 17:50:37,251 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 4.916666666666667) internal successors, (236), 49 states have internal predecessors, (236), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:37,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:37,251 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2024-09-12 17:50:37,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-09-12 17:50:37,253 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:37,254 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:37,271 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 17:50:37,457 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 17:50:37,458 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:37,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:37,458 INFO L85 PathProgramCache]: Analyzing trace with hash 496602182, now seen corresponding path program 5 times [2024-09-12 17:50:37,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:37,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359592810] [2024-09-12 17:50:37,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:37,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:39,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:39,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:39,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359592810] [2024-09-12 17:50:39,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359592810] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:50:39,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735493462] [2024-09-12 17:50:39,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 17:50:39,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:39,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:50:39,546 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 17:50:39,547 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 17:50:39,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-09-12 17:50:39,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:50:39,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 17:50:39,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:50:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:39,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:50:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:42,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735493462] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:50:42,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:50:42,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 96 [2024-09-12 17:50:42,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270340560] [2024-09-12 17:50:42,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:50:42,524 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-09-12 17:50:42,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-09-12 17:50:42,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-09-12 17:50:42,531 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand has 97 states, 96 states have (on average 4.958333333333333) internal successors, (476), 97 states have internal predecessors, (476), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:42,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:50:42,940 INFO L93 Difference]: Finished difference Result 481 states and 528 transitions. [2024-09-12 17:50:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-09-12 17:50:42,941 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 4.958333333333333) internal successors, (476), 97 states have internal predecessors, (476), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2024-09-12 17:50:42,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:50:42,943 INFO L225 Difference]: With dead ends: 481 [2024-09-12 17:50:42,943 INFO L226 Difference]: Without dead ends: 480 [2024-09-12 17:50:42,946 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-09-12 17:50:42,947 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 17:50:42,947 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 306 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 17:50:42,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-09-12 17:50:43,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2024-09-12 17:50:43,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 476 states have (on average 1.0021008403361344) internal successors, (477), 476 states have internal predecessors, (477), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:43,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 480 transitions. [2024-09-12 17:50:43,026 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 480 transitions. Word has length 239 [2024-09-12 17:50:43,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:50:43,026 INFO L474 AbstractCegarLoop]: Abstraction has 480 states and 480 transitions. [2024-09-12 17:50:43,027 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 4.958333333333333) internal successors, (476), 97 states have internal predecessors, (476), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:50:43,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 480 transitions. [2024-09-12 17:50:43,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-09-12 17:50:43,033 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:50:43,033 INFO L216 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:50:43,050 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 17:50:43,234 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 17:50:43,234 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:50:43,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:50:43,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2007464774, now seen corresponding path program 6 times [2024-09-12 17:50:43,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:50:43,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606561821] [2024-09-12 17:50:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:50:43,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:50:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:49,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:50:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:50:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:49,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:50:49,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606561821] [2024-09-12 17:50:49,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606561821] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:50:49,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958060798] [2024-09-12 17:50:49,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 17:50:49,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:50:49,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:50:49,158 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 17:50:49,161 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 17:50:49,420 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2024-09-12 17:50:49,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:50:49,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-12 17:50:49,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:50:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:49,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:50:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:50:58,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958060798] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:50:58,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:50:58,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 192 [2024-09-12 17:50:58,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817629507] [2024-09-12 17:50:58,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:50:58,871 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-09-12 17:50:58,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:50:58,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-09-12 17:50:58,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-09-12 17:50:58,884 INFO L87 Difference]: Start difference. First operand 480 states and 480 transitions. Second operand has 193 states, 192 states have (on average 4.979166666666667) internal successors, (956), 193 states have internal predecessors, (956), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:51:00,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:51:00,281 INFO L93 Difference]: Finished difference Result 961 states and 1056 transitions. [2024-09-12 17:51:00,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-09-12 17:51:00,282 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 192 states have (on average 4.979166666666667) internal successors, (956), 193 states have internal predecessors, (956), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 479 [2024-09-12 17:51:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:51:00,286 INFO L225 Difference]: With dead ends: 961 [2024-09-12 17:51:00,286 INFO L226 Difference]: Without dead ends: 960 [2024-09-12 17:51:00,289 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 864 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-09-12 17:51:00,290 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 17:51:00,290 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 606 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 17:51:00,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2024-09-12 17:51:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 960. [2024-09-12 17:51:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 956 states have (on average 1.0010460251046025) internal successors, (957), 956 states have internal predecessors, (957), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:51:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 960 transitions. [2024-09-12 17:51:00,410 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 960 transitions. Word has length 479 [2024-09-12 17:51:00,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:51:00,411 INFO L474 AbstractCegarLoop]: Abstraction has 960 states and 960 transitions. [2024-09-12 17:51:00,411 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 192 states have (on average 4.979166666666667) internal successors, (956), 193 states have internal predecessors, (956), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:51:00,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:51:00,412 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 960 transitions. [2024-09-12 17:51:00,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2024-09-12 17:51:00,436 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:51:00,436 INFO L216 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:51:00,455 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 17:51:00,637 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 17:51:00,637 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:51:00,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:51:00,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1935497542, now seen corresponding path program 7 times [2024-09-12 17:51:00,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:51:00,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840117895] [2024-09-12 17:51:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:51:00,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:51:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:51:23,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:51:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:51:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:51:23,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:51:23,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840117895] [2024-09-12 17:51:23,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840117895] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:51:23,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281328614] [2024-09-12 17:51:23,649 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 17:51:23,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:51:23,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:51:23,651 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 17:51:23,652 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 17:51:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:51:23,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 2125 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-09-12 17:51:23,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:51:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:51:24,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:51:59,641 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:51:59,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281328614] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:51:59,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:51:59,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 384 [2024-09-12 17:51:59,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463424362] [2024-09-12 17:51:59,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:51:59,644 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2024-09-12 17:51:59,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:51:59,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2024-09-12 17:51:59,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-09-12 17:51:59,669 INFO L87 Difference]: Start difference. First operand 960 states and 960 transitions. Second operand has 385 states, 384 states have (on average 4.989583333333333) internal successors, (1916), 385 states have internal predecessors, (1916), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:52:06,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:52:06,901 INFO L93 Difference]: Finished difference Result 1921 states and 2112 transitions. [2024-09-12 17:52:06,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2024-09-12 17:52:06,903 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 384 states have (on average 4.989583333333333) internal successors, (1916), 385 states have internal predecessors, (1916), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 959 [2024-09-12 17:52:06,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:52:06,913 INFO L225 Difference]: With dead ends: 1921 [2024-09-12 17:52:06,913 INFO L226 Difference]: Without dead ends: 1920 [2024-09-12 17:52:06,920 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2111 GetRequests, 1728 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 45.2s TimeCoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-09-12 17:52:06,921 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 17:52:06,921 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1179 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 17:52:06,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2024-09-12 17:52:07,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1920. [2024-09-12 17:52:07,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1916 states have (on average 1.0005219206680585) internal successors, (1917), 1916 states have internal predecessors, (1917), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:52:07,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 1920 transitions. [2024-09-12 17:52:07,128 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 1920 transitions. Word has length 959 [2024-09-12 17:52:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:52:07,130 INFO L474 AbstractCegarLoop]: Abstraction has 1920 states and 1920 transitions. [2024-09-12 17:52:07,131 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 384 states have (on average 4.989583333333333) internal successors, (1916), 385 states have internal predecessors, (1916), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:52:07,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:52:07,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 1920 transitions. [2024-09-12 17:52:07,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1920 [2024-09-12 17:52:07,156 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:52:07,157 INFO L216 NwaCegarLoop]: trace histogram [383, 383, 382, 382, 382, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:52:07,178 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 17:52:07,357 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 17:52:07,358 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 17:52:07,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:52:07,358 INFO L85 PathProgramCache]: Analyzing trace with hash 422647110, now seen corresponding path program 8 times [2024-09-12 17:52:07,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:52:07,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327429871] [2024-09-12 17:52:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:52:07,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:52:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:01,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 365001 backedges. 0 proven. 365001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:54:01,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:01,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327429871] [2024-09-12 17:54:01,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327429871] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:01,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449152263] [2024-09-12 17:54:01,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 17:54:01,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:01,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:01,780 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 17:54:01,782 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 17:54:02,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 17:54:02,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:54:02,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 4237 conjuncts, 384 conjuncts are in the unsatisfiable core [2024-09-12 17:54:02,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 365001 backedges. 0 proven. 365001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:54:04,344 INFO L327 TraceCheckSpWp]: Computing backward predicates...