./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/cggmp2005_variant.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/loop-lit/cggmp2005_variant.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 d63924edab54dab3adf6fc30d0dae54d46ed57e9ae48bc8d03de12421cfd3603 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 18:03:19,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 18:03:20,003 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 18:03:20,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 18:03:20,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 18:03:20,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 18:03:20,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 18:03:20,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 18:03:20,059 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 18:03:20,061 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 18:03:20,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 18:03:20,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 18:03:20,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 18:03:20,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 18:03:20,067 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 18:03:20,067 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 18:03:20,067 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 18:03:20,068 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 18:03:20,068 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 18:03:20,068 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 18:03:20,068 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 18:03:20,072 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 18:03:20,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 18:03:20,072 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 18:03:20,073 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 18:03:20,073 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 18:03:20,073 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 18:03:20,073 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 18:03:20,074 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 18:03:20,074 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 18:03:20,074 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 18:03:20,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 18:03:20,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:03:20,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 18:03:20,075 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 18:03:20,076 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 18:03:20,077 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 18:03:20,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 18:03:20,078 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 18:03:20,078 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 18:03:20,078 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 18:03:20,079 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 18:03:20,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d63924edab54dab3adf6fc30d0dae54d46ed57e9ae48bc8d03de12421cfd3603 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 18:03:20,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 18:03:20,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 18:03:20,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 18:03:20,447 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 18:03:20,447 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 18:03:20,449 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2024-09-12 18:03:22,197 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 18:03:22,413 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 18:03:22,414 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2024-09-12 18:03:22,421 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/8291287aa/93d91d01fba448d1b413741106aff977/FLAGaaa250136 [2024-09-12 18:03:22,794 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/8291287aa/93d91d01fba448d1b413741106aff977 [2024-09-12 18:03:22,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 18:03:22,797 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 18:03:22,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 18:03:22,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 18:03:22,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 18:03:22,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:03:22" (1/1) ... [2024-09-12 18:03:22,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d031ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:22, skipping insertion in model container [2024-09-12 18:03:22,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:03:22" (1/1) ... [2024-09-12 18:03:22,828 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 18:03:22,992 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/cggmp2005_variant.i[895,908] [2024-09-12 18:03:23,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:03:23,029 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 18:03:23,051 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/cggmp2005_variant.i[895,908] [2024-09-12 18:03:23,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:03:23,078 INFO L204 MainTranslator]: Completed translation [2024-09-12 18:03:23,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:23 WrapperNode [2024-09-12 18:03:23,079 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 18:03:23,080 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 18:03:23,081 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 18:03:23,081 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 18:03:23,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:23" (1/1) ... [2024-09-12 18:03:23,094 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:23" (1/1) ... [2024-09-12 18:03:23,101 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 18:03:23,102 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 18:03:23,103 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 18:03:23,103 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 18:03:23,103 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 18:03:23,113 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:23" (1/1) ... [2024-09-12 18:03:23,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:23" (1/1) ... [2024-09-12 18:03:23,114 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:23" (1/1) ... [2024-09-12 18:03:23,134 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-12 18:03:23,134 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:23" (1/1) ... [2024-09-12 18:03:23,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:23" (1/1) ... [2024-09-12 18:03:23,138 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:23" (1/1) ... [2024-09-12 18:03:23,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:23" (1/1) ... [2024-09-12 18:03:23,142 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:23" (1/1) ... [2024-09-12 18:03:23,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:23" (1/1) ... [2024-09-12 18:03:23,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 18:03:23,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 18:03:23,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 18:03:23,148 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 18:03:23,149 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:23" (1/1) ... [2024-09-12 18:03:23,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:03:23,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:23,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-12 18:03:23,195 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-12 18:03:23,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 18:03:23,247 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 18:03:23,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 18:03:23,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 18:03:23,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 18:03:23,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 18:03:23,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 18:03:23,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 18:03:23,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 18:03:23,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 18:03:23,319 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 18:03:23,321 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 18:03:23,516 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-12 18:03:23,517 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 18:03:23,547 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 18:03:23,548 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 18:03:23,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:03:23 BoogieIcfgContainer [2024-09-12 18:03:23,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 18:03:23,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 18:03:23,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 18:03:23,554 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 18:03:23,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 06:03:22" (1/3) ... [2024-09-12 18:03:23,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ff8fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:03:23, skipping insertion in model container [2024-09-12 18:03:23,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:03:23" (2/3) ... [2024-09-12 18:03:23,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ff8fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:03:23, skipping insertion in model container [2024-09-12 18:03:23,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:03:23" (3/3) ... [2024-09-12 18:03:23,557 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2024-09-12 18:03:23,575 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 18:03:23,576 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-09-12 18:03:23,663 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 18:03:23,673 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;@40349207, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 18:03:23,673 INFO L337 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-09-12 18:03:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 28 states have internal predecessors, (32), 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 18:03:23,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-12 18:03:23,685 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:23,685 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:23,686 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:23,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:23,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1935554626, now seen corresponding path program 1 times [2024-09-12 18:03:23,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:23,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599193645] [2024-09-12 18:03:23,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:23,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:23,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:23,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:23,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599193645] [2024-09-12 18:03:23,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599193645] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:03:23,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:03:23,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:03:23,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622564261] [2024-09-12 18:03:23,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:03:23,897 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:03:23,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:23,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:03:23,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:03:23,926 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 28 states have internal predecessors, (32), 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 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 18:03:23,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:23,978 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2024-09-12 18:03:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:03:23,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2024-09-12 18:03:23,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:23,990 INFO L225 Difference]: With dead ends: 48 [2024-09-12 18:03:23,990 INFO L226 Difference]: Without dead ends: 27 [2024-09-12 18:03:23,993 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 18:03:23,997 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:23,998 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 40 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:03:24,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-12 18:03:24,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-12 18:03:24,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.4375) 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 18:03:24,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2024-09-12 18:03:24,033 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 7 [2024-09-12 18:03:24,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:24,034 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2024-09-12 18:03:24,034 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 18:03:24,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:24,035 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2024-09-12 18:03:24,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-12 18:03:24,035 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:24,035 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:24,036 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 18:03:24,036 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:24,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:24,036 INFO L85 PathProgramCache]: Analyzing trace with hash 127348781, now seen corresponding path program 1 times [2024-09-12 18:03:24,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:24,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958566967] [2024-09-12 18:03:24,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:24,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:24,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:24,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:24,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958566967] [2024-09-12 18:03:24,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958566967] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:03:24,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:03:24,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:03:24,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075731416] [2024-09-12 18:03:24,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:03:24,090 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:03:24,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:24,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:03:24,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:03:24,096 INFO L87 Difference]: Start difference. First operand 27 states and 27 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 18:03:24,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:24,135 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2024-09-12 18:03:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:03:24,136 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 18:03:24,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:24,136 INFO L225 Difference]: With dead ends: 27 [2024-09-12 18:03:24,137 INFO L226 Difference]: Without dead ends: 25 [2024-09-12 18:03:24,137 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 18:03:24,138 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:24,139 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:03:24,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-12 18:03:24,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-12 18:03:24,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 20 states have internal predecessors, (21), 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 18:03:24,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2024-09-12 18:03:24,157 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 8 [2024-09-12 18:03:24,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:24,158 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2024-09-12 18:03:24,158 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 18:03:24,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:24,159 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2024-09-12 18:03:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 18:03:24,159 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:24,160 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:24,160 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 18:03:24,161 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:24,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:24,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2123095919, now seen corresponding path program 1 times [2024-09-12 18:03:24,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:24,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678348861] [2024-09-12 18:03:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:24,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:24,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:24,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:24,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678348861] [2024-09-12 18:03:24,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678348861] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:03:24,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:03:24,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:03:24,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835228256] [2024-09-12 18:03:24,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:03:24,239 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:03:24,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:24,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:03:24,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:03:24,240 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 18:03:24,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:24,262 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2024-09-12 18:03:24,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:03:24,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 18:03:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:24,263 INFO L225 Difference]: With dead ends: 29 [2024-09-12 18:03:24,264 INFO L226 Difference]: Without dead ends: 27 [2024-09-12 18:03:24,264 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 18:03:24,265 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 36 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 18:03:24,266 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 36 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:03:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-12 18:03:24,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-12 18:03:24,280 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 18:03:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2024-09-12 18:03:24,283 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 10 [2024-09-12 18:03:24,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:24,283 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2024-09-12 18:03:24,284 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 18:03:24,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2024-09-12 18:03:24,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 18:03:24,285 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:24,285 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:24,285 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 18:03:24,286 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:24,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:24,287 INFO L85 PathProgramCache]: Analyzing trace with hash 185714353, now seen corresponding path program 1 times [2024-09-12 18:03:24,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:24,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980102974] [2024-09-12 18:03:24,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:24,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:24,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:24,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980102974] [2024-09-12 18:03:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980102974] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:03:24,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:03:24,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:03:24,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031819766] [2024-09-12 18:03:24,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:03:24,391 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:03:24,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:24,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:03:24,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:03:24,393 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 18:03:24,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:24,463 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2024-09-12 18:03:24,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:03:24,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 12 [2024-09-12 18:03:24,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:24,465 INFO L225 Difference]: With dead ends: 30 [2024-09-12 18:03:24,466 INFO L226 Difference]: Without dead ends: 29 [2024-09-12 18:03:24,467 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:03:24,469 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:24,473 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 36 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:03:24,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-12 18:03:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-09-12 18:03:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.263157894736842) internal successors, (24), 23 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 18:03:24,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2024-09-12 18:03:24,489 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 12 [2024-09-12 18:03:24,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:24,490 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2024-09-12 18:03:24,490 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 18:03:24,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:24,491 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2024-09-12 18:03:24,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 18:03:24,493 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:24,493 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:24,494 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 18:03:24,494 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:24,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:24,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1462177707, now seen corresponding path program 1 times [2024-09-12 18:03:24,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:24,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235797149] [2024-09-12 18:03:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:24,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:24,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:24,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:24,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235797149] [2024-09-12 18:03:24,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235797149] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:03:24,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:03:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:03:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035524161] [2024-09-12 18:03:24,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:03:24,567 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:03:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:24,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:03:24,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:03:24,569 INFO L87 Difference]: Start difference. First operand 28 states and 28 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 18:03:24,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:24,600 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2024-09-12 18:03:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:03:24,601 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 18:03:24,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:24,602 INFO L225 Difference]: With dead ends: 28 [2024-09-12 18:03:24,602 INFO L226 Difference]: Without dead ends: 27 [2024-09-12 18:03:24,603 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:03:24,604 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:24,604 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 28 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:03:24,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-12 18:03:24,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-12 18:03:24,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.2105263157894737) 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 18:03:24,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2024-09-12 18:03:24,611 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 13 [2024-09-12 18:03:24,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:24,611 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2024-09-12 18:03:24,612 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 18:03:24,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:24,612 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2024-09-12 18:03:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 18:03:24,613 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:24,613 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:24,613 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 18:03:24,613 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:24,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:24,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1217292271, now seen corresponding path program 1 times [2024-09-12 18:03:24,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:24,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122831080] [2024-09-12 18:03:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:24,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:24,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:24,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:24,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122831080] [2024-09-12 18:03:24,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122831080] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:24,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936012494] [2024-09-12 18:03:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:24,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:24,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:24,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:03:24,689 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 18:03:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:24,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:03:24,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:24,808 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 18:03:24,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:03:24,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936012494] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:03:24,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:03:24,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-09-12 18:03:24,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511277023] [2024-09-12 18:03:24,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:03:24,810 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:03:24,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:24,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:03:24,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:03:24,815 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 18:03:24,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:24,845 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2024-09-12 18:03:24,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:03:24,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 17 [2024-09-12 18:03:24,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:24,846 INFO L225 Difference]: With dead ends: 27 [2024-09-12 18:03:24,846 INFO L226 Difference]: Without dead ends: 26 [2024-09-12 18:03:24,847 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:03:24,848 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 37 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 18:03:24,850 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 37 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:03:24,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-12 18:03:24,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-12 18:03:24,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.1578947368421053) 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 18:03:24,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2024-09-12 18:03:24,859 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 17 [2024-09-12 18:03:24,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:24,859 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2024-09-12 18:03:24,860 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 18:03:24,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:24,861 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2024-09-12 18:03:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 18:03:24,862 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:24,863 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:24,883 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-12 18:03:25,066 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 18:03:25,067 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:25,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:25,068 INFO L85 PathProgramCache]: Analyzing trace with hash -918645207, now seen corresponding path program 1 times [2024-09-12 18:03:25,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:25,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103735895] [2024-09-12 18:03:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:25,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:25,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:25,142 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 18:03:25,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:25,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103735895] [2024-09-12 18:03:25,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103735895] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:25,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950735448] [2024-09-12 18:03:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:25,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:25,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:25,146 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:03:25,148 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 18:03:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:25,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:03:25,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:25,239 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 18:03:25,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:25,314 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 18:03:25,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950735448] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:25,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:25,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-09-12 18:03:25,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478775788] [2024-09-12 18:03:25,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:25,316 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 18:03:25,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:25,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 18:03:25,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:03:25,317 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 18:03:25,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:25,383 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2024-09-12 18:03:25,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:03:25,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 18 [2024-09-12 18:03:25,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:25,388 INFO L225 Difference]: With dead ends: 52 [2024-09-12 18:03:25,388 INFO L226 Difference]: Without dead ends: 51 [2024-09-12 18:03:25,389 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 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 18:03:25,391 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 74 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 18:03:25,392 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 74 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:03:25,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-12 18:03:25,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2024-09-12 18:03:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.205128205128205) internal successors, (47), 41 states have internal predecessors, (47), 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 18:03:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2024-09-12 18:03:25,413 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 18 [2024-09-12 18:03:25,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:25,413 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2024-09-12 18:03:25,414 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 18:03:25,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2024-09-12 18:03:25,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 18:03:25,417 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:25,417 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:25,433 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 18:03:25,618 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 18:03:25,618 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:25,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:25,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1944342105, now seen corresponding path program 1 times [2024-09-12 18:03:25,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:25,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282304817] [2024-09-12 18:03:25,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:25,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:25,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:25,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:25,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282304817] [2024-09-12 18:03:25,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282304817] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:25,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576255679] [2024-09-12 18:03:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:25,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:25,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:25,909 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:03:25,911 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 18:03:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:25,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 18:03:25,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:26,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:26,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576255679] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:26,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:26,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-09-12 18:03:26,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196732165] [2024-09-12 18:03:26,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:26,540 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-12 18:03:26,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:26,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-12 18:03:26,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2024-09-12 18:03:26,542 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 23 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 3 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 18:03:26,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:26,736 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2024-09-12 18:03:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 18:03:26,737 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 3 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 20 [2024-09-12 18:03:26,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:26,738 INFO L225 Difference]: With dead ends: 51 [2024-09-12 18:03:26,739 INFO L226 Difference]: Without dead ends: 46 [2024-09-12 18:03:26,740 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2024-09-12 18:03:26,741 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:26,741 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 97 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:03:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-12 18:03:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-09-12 18:03:26,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 states have internal predecessors, (46), 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 18:03:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2024-09-12 18:03:26,757 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 20 [2024-09-12 18:03:26,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:26,757 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2024-09-12 18:03:26,758 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 3 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 18:03:26,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:26,758 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2024-09-12 18:03:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 18:03:26,763 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:26,764 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:26,783 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 18:03:26,967 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-12 18:03:26,968 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:26,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1586769713, now seen corresponding path program 1 times [2024-09-12 18:03:26,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:26,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49561591] [2024-09-12 18:03:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:26,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:27,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:27,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:27,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49561591] [2024-09-12 18:03:27,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49561591] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:27,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274590158] [2024-09-12 18:03:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:27,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:27,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:27,050 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:03:27,053 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 18:03:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:27,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:03:27,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:27,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:27,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274590158] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:27,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:27,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-12 18:03:27,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673850515] [2024-09-12 18:03:27,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:27,179 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 18:03:27,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:27,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 18:03:27,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:03:27,181 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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 18:03:27,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:27,317 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2024-09-12 18:03:27,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 18:03:27,317 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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 19 [2024-09-12 18:03:27,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:27,318 INFO L225 Difference]: With dead ends: 50 [2024-09-12 18:03:27,318 INFO L226 Difference]: Without dead ends: 49 [2024-09-12 18:03:27,319 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2024-09-12 18:03:27,319 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:27,320 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 53 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:03:27,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-12 18:03:27,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-09-12 18:03:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 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 18:03:27,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2024-09-12 18:03:27,333 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 19 [2024-09-12 18:03:27,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:27,334 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2024-09-12 18:03:27,334 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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 18:03:27,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:27,334 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2024-09-12 18:03:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-12 18:03:27,335 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:27,335 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:27,357 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 18:03:27,535 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:27,536 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:27,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:27,536 INFO L85 PathProgramCache]: Analyzing trace with hash 347485913, now seen corresponding path program 2 times [2024-09-12 18:03:27,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:27,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570460524] [2024-09-12 18:03:27,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:27,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:27,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:27,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:27,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:27,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570460524] [2024-09-12 18:03:27,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570460524] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:27,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615481835] [2024-09-12 18:03:27,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:03:27,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:27,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:27,838 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:03:27,842 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 18:03:27,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:03:27,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:03:27,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 18:03:27,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:28,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:28,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615481835] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:28,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:28,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2024-09-12 18:03:28,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291846992] [2024-09-12 18:03:28,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:28,523 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 18:03:28,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:28,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 18:03:28,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2024-09-12 18:03:28,526 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 32 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 3 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 18:03:28,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:28,988 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2024-09-12 18:03:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 18:03:28,989 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 3 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 27 [2024-09-12 18:03:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:28,989 INFO L225 Difference]: With dead ends: 48 [2024-09-12 18:03:28,990 INFO L226 Difference]: Without dead ends: 42 [2024-09-12 18:03:28,991 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 18:03:28,991 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:28,991 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 73 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:03:28,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-12 18:03:29,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-09-12 18:03:29,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2024-09-12 18:03:29,008 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 27 [2024-09-12 18:03:29,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:29,009 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2024-09-12 18:03:29,009 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 3 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 18:03:29,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:29,009 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2024-09-12 18:03:29,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-12 18:03:29,010 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:29,010 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:29,028 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 18:03:29,210 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-12 18:03:29,211 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:29,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:29,212 INFO L85 PathProgramCache]: Analyzing trace with hash -709546327, now seen corresponding path program 2 times [2024-09-12 18:03:29,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:29,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602111] [2024-09-12 18:03:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:29,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:29,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:29,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:29,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602111] [2024-09-12 18:03:29,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602111] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:29,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688209751] [2024-09-12 18:03:29,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:03:29,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:29,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:29,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:03:29,302 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 18:03:29,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:03:29,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:03:29,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:03:29,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:29,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:29,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688209751] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:29,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:29,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-09-12 18:03:29,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452014043] [2024-09-12 18:03:29,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:29,482 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 18:03:29,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:29,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 18:03:29,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:03:29,484 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 13 states, 12 states have (on average 6.5) internal successors, (78), 13 states have internal predecessors, (78), 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 18:03:29,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:29,541 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2024-09-12 18:03:29,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 18:03:29,542 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.5) internal successors, (78), 13 states have internal predecessors, (78), 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 39 [2024-09-12 18:03:29,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:29,543 INFO L225 Difference]: With dead ends: 89 [2024-09-12 18:03:29,543 INFO L226 Difference]: Without dead ends: 88 [2024-09-12 18:03:29,544 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 74 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 18:03:29,545 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 85 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 18:03:29,545 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 85 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:03:29,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-12 18:03:29,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2024-09-12 18:03:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0897435897435896) internal successors, (85), 79 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2024-09-12 18:03:29,576 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 39 [2024-09-12 18:03:29,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:29,576 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2024-09-12 18:03:29,577 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.5) internal successors, (78), 13 states have internal predecessors, (78), 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 18:03:29,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:29,577 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2024-09-12 18:03:29,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-12 18:03:29,578 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:29,578 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:29,596 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 18:03:29,778 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 18:03:29,779 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:29,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:29,779 INFO L85 PathProgramCache]: Analyzing trace with hash -521099599, now seen corresponding path program 2 times [2024-09-12 18:03:29,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:29,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89463553] [2024-09-12 18:03:29,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:29,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:29,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:29,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:29,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89463553] [2024-09-12 18:03:29,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89463553] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:29,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049920792] [2024-09-12 18:03:29,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:03:29,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:29,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:29,891 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:03:29,893 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 18:03:29,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:03:29,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:03:29,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 18:03:29,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 24 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:30,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:30,284 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:30,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049920792] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:30,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:30,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 10] total 23 [2024-09-12 18:03:30,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031214355] [2024-09-12 18:03:30,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:30,285 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 18:03:30,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:30,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 18:03:30,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2024-09-12 18:03:30,287 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 24 states, 23 states have (on average 4.565217391304348) internal successors, (105), 24 states have internal predecessors, (105), 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 18:03:30,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:30,443 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2024-09-12 18:03:30,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 18:03:30,444 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.565217391304348) internal successors, (105), 24 states have internal predecessors, (105), 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 40 [2024-09-12 18:03:30,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:30,445 INFO L225 Difference]: With dead ends: 83 [2024-09-12 18:03:30,445 INFO L226 Difference]: Without dead ends: 82 [2024-09-12 18:03:30,446 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=389, Invalid=667, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 18:03:30,446 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:30,446 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 51 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:03:30,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-12 18:03:30,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-09-12 18:03:30,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 78 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2024-09-12 18:03:30,482 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 40 [2024-09-12 18:03:30,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:30,482 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2024-09-12 18:03:30,483 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.565217391304348) internal successors, (105), 24 states have internal predecessors, (105), 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 18:03:30,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:30,483 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2024-09-12 18:03:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-09-12 18:03:30,487 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:30,487 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:30,507 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-12 18:03:30,688 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:30,689 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:30,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:30,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1944396119, now seen corresponding path program 3 times [2024-09-12 18:03:30,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:30,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085258382] [2024-09-12 18:03:30,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:30,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:30,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:30,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:30,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085258382] [2024-09-12 18:03:30,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085258382] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:30,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364395650] [2024-09-12 18:03:30,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:03:30,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:30,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:30,889 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:03:30,891 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 18:03:30,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 18:03:30,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:03:30,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 18:03:30,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:31,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:31,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364395650] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:31,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:31,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-09-12 18:03:31,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782633502] [2024-09-12 18:03:31,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:31,367 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 18:03:31,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:31,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 18:03:31,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-09-12 18:03:31,369 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 25 states, 24 states have (on average 6.75) internal successors, (162), 25 states have internal predecessors, (162), 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 18:03:31,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:31,493 INFO L93 Difference]: Finished difference Result 167 states and 178 transitions. [2024-09-12 18:03:31,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 18:03:31,493 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.75) internal successors, (162), 25 states have internal predecessors, (162), 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 81 [2024-09-12 18:03:31,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:31,496 INFO L225 Difference]: With dead ends: 167 [2024-09-12 18:03:31,496 INFO L226 Difference]: Without dead ends: 166 [2024-09-12 18:03:31,497 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-09-12 18:03:31,497 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:31,498 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:03:31,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-09-12 18:03:31,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-09-12 18:03:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.0061728395061729) internal successors, (163), 162 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2024-09-12 18:03:31,560 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 81 [2024-09-12 18:03:31,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:31,560 INFO L474 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2024-09-12 18:03:31,560 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.75) internal successors, (162), 25 states have internal predecessors, (162), 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 18:03:31,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2024-09-12 18:03:31,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-09-12 18:03:31,566 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:31,566 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:31,583 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 18:03:31,766 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:31,767 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:31,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash -443400535, now seen corresponding path program 4 times [2024-09-12 18:03:31,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:31,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122929727] [2024-09-12 18:03:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:31,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:32,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:32,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:32,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122929727] [2024-09-12 18:03:32,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122929727] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:32,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076376617] [2024-09-12 18:03:32,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:03:32,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:32,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:32,498 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:03:32,499 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 18:03:32,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:03:32,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:03:32,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 18:03:32,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:32,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:33,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:33,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076376617] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:33,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:33,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2024-09-12 18:03:33,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391951075] [2024-09-12 18:03:33,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:33,602 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-12 18:03:33,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:33,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-12 18:03:33,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 18:03:33,606 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand has 49 states, 48 states have (on average 6.875) internal successors, (330), 49 states have internal predecessors, (330), 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 18:03:33,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:33,858 INFO L93 Difference]: Finished difference Result 335 states and 358 transitions. [2024-09-12 18:03:33,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-12 18:03:33,859 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 6.875) internal successors, (330), 49 states have internal predecessors, (330), 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 165 [2024-09-12 18:03:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:33,860 INFO L225 Difference]: With dead ends: 335 [2024-09-12 18:03:33,861 INFO L226 Difference]: Without dead ends: 334 [2024-09-12 18:03:33,862 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 18:03:33,863 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:33,863 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 252 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:03:33,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-09-12 18:03:33,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2024-09-12 18:03:33,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 330 states have (on average 1.003030303030303) internal successors, (331), 330 states have internal predecessors, (331), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:33,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 334 transitions. [2024-09-12 18:03:33,941 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 334 transitions. Word has length 165 [2024-09-12 18:03:33,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:33,942 INFO L474 AbstractCegarLoop]: Abstraction has 334 states and 334 transitions. [2024-09-12 18:03:33,943 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 6.875) internal successors, (330), 49 states have internal predecessors, (330), 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 18:03:33,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:33,943 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 334 transitions. [2024-09-12 18:03:33,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-09-12 18:03:33,952 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:33,952 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:33,971 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 18:03:34,152 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 18:03:34,153 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:34,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:34,154 INFO L85 PathProgramCache]: Analyzing trace with hash -550437207, now seen corresponding path program 5 times [2024-09-12 18:03:34,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:34,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539316240] [2024-09-12 18:03:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:34,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:36,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:36,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:36,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539316240] [2024-09-12 18:03:36,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539316240] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:36,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353817225] [2024-09-12 18:03:36,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:03:36,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:36,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:36,421 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:03:36,423 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 18:03:36,576 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-09-12 18:03:36,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:03:36,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 18:03:36,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:36,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:39,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353817225] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:39,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:39,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 96 [2024-09-12 18:03:39,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296757508] [2024-09-12 18:03:39,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:39,578 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-09-12 18:03:39,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:39,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-09-12 18:03:39,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-09-12 18:03:39,583 INFO L87 Difference]: Start difference. First operand 334 states and 334 transitions. Second operand has 97 states, 96 states have (on average 6.9375) internal successors, (666), 97 states have internal predecessors, (666), 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 18:03:40,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:40,101 INFO L93 Difference]: Finished difference Result 671 states and 718 transitions. [2024-09-12 18:03:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-09-12 18:03:40,102 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 6.9375) internal successors, (666), 97 states have internal predecessors, (666), 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 333 [2024-09-12 18:03:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:40,106 INFO L225 Difference]: With dead ends: 671 [2024-09-12 18:03:40,106 INFO L226 Difference]: Without dead ends: 670 [2024-09-12 18:03:40,108 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 620 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 18:03:40,109 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 498 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 18:03:40,110 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 498 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:03:40,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2024-09-12 18:03:40,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2024-09-12 18:03:40,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 666 states have (on average 1.0015015015015014) internal successors, (667), 666 states have internal predecessors, (667), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 670 transitions. [2024-09-12 18:03:40,218 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 670 transitions. Word has length 333 [2024-09-12 18:03:40,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:40,219 INFO L474 AbstractCegarLoop]: Abstraction has 670 states and 670 transitions. [2024-09-12 18:03:40,219 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 6.9375) internal successors, (666), 97 states have internal predecessors, (666), 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 18:03:40,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:40,220 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 670 transitions. [2024-09-12 18:03:40,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2024-09-12 18:03:40,231 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:40,232 INFO L216 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:40,252 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 18:03:40,435 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 18:03:40,436 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:03:40,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:40,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1926332759, now seen corresponding path program 6 times [2024-09-12 18:03:40,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:40,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458805578] [2024-09-12 18:03:40,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:40,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:47,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:47,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:47,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458805578] [2024-09-12 18:03:47,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458805578] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:47,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130715643] [2024-09-12 18:03:47,817 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:03:47,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:47,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:47,819 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:03:47,819 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 18:03:48,133 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2024-09-12 18:03:48,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:03:48,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-12 18:03:48,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:48,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:57,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130715643] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:57,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:57,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 192 [2024-09-12 18:03:57,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941626346] [2024-09-12 18:03:57,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:57,847 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-09-12 18:03:57,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:57,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-09-12 18:03:57,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-09-12 18:03:57,863 INFO L87 Difference]: Start difference. First operand 670 states and 670 transitions. Second operand has 193 states, 192 states have (on average 6.96875) internal successors, (1338), 193 states have internal predecessors, (1338), 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 18:03:59,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:59,514 INFO L93 Difference]: Finished difference Result 1343 states and 1438 transitions. [2024-09-12 18:03:59,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-09-12 18:03:59,515 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 192 states have (on average 6.96875) internal successors, (1338), 193 states have internal predecessors, (1338), 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 669 [2024-09-12 18:03:59,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:59,521 INFO L225 Difference]: With dead ends: 1343 [2024-09-12 18:03:59,521 INFO L226 Difference]: Without dead ends: 1342 [2024-09-12 18:03:59,524 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1435 GetRequests, 1244 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 18:03:59,525 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:59,525 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 996 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:03:59,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2024-09-12 18:03:59,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1342. [2024-09-12 18:03:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1338 states have (on average 1.000747384155456) internal successors, (1339), 1338 states have internal predecessors, (1339), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:59,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1342 transitions. [2024-09-12 18:03:59,825 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1342 transitions. Word has length 669 [2024-09-12 18:03:59,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:59,827 INFO L474 AbstractCegarLoop]: Abstraction has 1342 states and 1342 transitions. [2024-09-12 18:03:59,827 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 192 states have (on average 6.96875) internal successors, (1338), 193 states have internal predecessors, (1338), 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 18:03:59,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:59,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1342 transitions. [2024-09-12 18:03:59,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1342 [2024-09-12 18:03:59,868 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:59,868 INFO L216 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:59,883 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-12 18:04:00,069 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 18:04:00,069 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:04:00,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:04:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash -735478103, now seen corresponding path program 7 times [2024-09-12 18:04:00,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:04:00,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689893217] [2024-09-12 18:04:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:04:00,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:04:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:28,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:04:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 126255 backedges. 0 proven. 126255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:04:28,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:04:28,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689893217] [2024-09-12 18:04:28,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689893217] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:04:28,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503488804] [2024-09-12 18:04:28,026 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:04:28,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:04:28,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:04:28,029 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:04:28,030 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 18:04:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:28,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 2507 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-09-12 18:04:28,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:04:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 126255 backedges. 0 proven. 126255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:04:29,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:05:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 126255 backedges. 0 proven. 126255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:05:05,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503488804] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:05:05,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:05:05,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 384 [2024-09-12 18:05:05,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525125795] [2024-09-12 18:05:05,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:05:05,265 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2024-09-12 18:05:05,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:05:05,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2024-09-12 18:05:05,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-09-12 18:05:05,302 INFO L87 Difference]: Start difference. First operand 1342 states and 1342 transitions. Second operand has 385 states, 384 states have (on average 6.984375) internal successors, (2682), 385 states have internal predecessors, (2682), 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 18:05:14,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:05:14,757 INFO L93 Difference]: Finished difference Result 2687 states and 2878 transitions. [2024-09-12 18:05:14,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2024-09-12 18:05:14,758 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 384 states have (on average 6.984375) internal successors, (2682), 385 states have internal predecessors, (2682), 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 1341 [2024-09-12 18:05:14,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:05:14,773 INFO L225 Difference]: With dead ends: 2687 [2024-09-12 18:05:14,774 INFO L226 Difference]: Without dead ends: 2686 [2024-09-12 18:05:14,783 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2875 GetRequests, 2492 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 45.9s TimeCoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-09-12 18:05:14,784 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 18:05:14,785 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1944 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 18:05:14,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2024-09-12 18:05:15,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2024-09-12 18:05:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2682 states have (on average 1.000372856077554) internal successors, (2683), 2682 states have internal predecessors, (2683), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:05:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 2686 transitions. [2024-09-12 18:05:15,151 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 2686 transitions. Word has length 1341 [2024-09-12 18:05:15,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:05:15,154 INFO L474 AbstractCegarLoop]: Abstraction has 2686 states and 2686 transitions. [2024-09-12 18:05:15,156 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 384 states have (on average 6.984375) internal successors, (2682), 385 states have internal predecessors, (2682), 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 18:05:15,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:05:15,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 2686 transitions. [2024-09-12 18:05:15,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2686 [2024-09-12 18:05:15,203 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:05:15,203 INFO L216 NwaCegarLoop]: trace histogram [383, 383, 382, 382, 382, 382, 382, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:05:15,227 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 18:05:15,404 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 18:05:15,405 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-09-12 18:05:15,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:05:15,406 INFO L85 PathProgramCache]: Analyzing trace with hash 236945065, now seen corresponding path program 8 times [2024-09-12 18:05:15,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:05:15,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863507018] [2024-09-12 18:05:15,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:05:15,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:05:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat