./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/nest-if3.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-invgen/nest-if3.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 ff6ed2162f27809b742c891ab6e2d783f8472921e0d39d2ecd3fd1d3f6661283 --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 18:01:04,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 18:01:04,482 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 18:01:04,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 18:01:04,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 18:01:04,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 18:01:04,524 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 18:01:04,525 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 18:01:04,525 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 18:01:04,527 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 18:01:04,528 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 18:01:04,528 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 18:01:04,528 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 18:01:04,529 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 18:01:04,529 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 18:01:04,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 18:01:04,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 18:01:04,533 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 18:01:04,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 18:01:04,533 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 18:01:04,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 18:01:04,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 18:01:04,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 18:01:04,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 18:01:04,536 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 18:01:04,537 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 18:01:04,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 18:01:04,537 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 18:01:04,537 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 18:01:04,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 18:01:04,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 18:01:04,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 18:01:04,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:01:04,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 18:01:04,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 18:01:04,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 18:01:04,541 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 18:01:04,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 18:01:04,541 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 18:01:04,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 18:01:04,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 18:01:04,546 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 18:01:04,547 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff6ed2162f27809b742c891ab6e2d783f8472921e0d39d2ecd3fd1d3f6661283 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 18:01:04,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 18:01:04,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 18:01:04,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 18:01:04,940 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 18:01:04,941 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 18:01:04,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/nest-if3.i [2024-09-12 18:01:06,538 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 18:01:06,745 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 18:01:06,745 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/nest-if3.i [2024-09-12 18:01:06,752 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e039f99c8/3b73fd9c5bd2427e984dc25351cad68b/FLAG9f40e2d74 [2024-09-12 18:01:06,765 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e039f99c8/3b73fd9c5bd2427e984dc25351cad68b [2024-09-12 18:01:06,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 18:01:06,768 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 18:01:06,770 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 18:01:06,770 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 18:01:06,777 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 18:01:06,778 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:01:06" (1/1) ... [2024-09-12 18:01:06,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4771a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:06, skipping insertion in model container [2024-09-12 18:01:06,779 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:01:06" (1/1) ... [2024-09-12 18:01:06,800 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 18:01:06,967 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-invgen/nest-if3.i[893,906] [2024-09-12 18:01:06,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:01:07,012 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 18:01:07,026 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-invgen/nest-if3.i[893,906] [2024-09-12 18:01:07,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:01:07,051 INFO L204 MainTranslator]: Completed translation [2024-09-12 18:01:07,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:07 WrapperNode [2024-09-12 18:01:07,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 18:01:07,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 18:01:07,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 18:01:07,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 18:01:07,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:07" (1/1) ... [2024-09-12 18:01:07,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:07" (1/1) ... [2024-09-12 18:01:07,074 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 18:01:07,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 18:01:07,075 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 18:01:07,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 18:01:07,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 18:01:07,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:07" (1/1) ... [2024-09-12 18:01:07,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:07" (1/1) ... [2024-09-12 18:01:07,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:07" (1/1) ... [2024-09-12 18:01:07,111 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 18:01:07,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:07" (1/1) ... [2024-09-12 18:01:07,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:07" (1/1) ... [2024-09-12 18:01:07,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:07" (1/1) ... [2024-09-12 18:01:07,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:07" (1/1) ... [2024-09-12 18:01:07,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:07" (1/1) ... [2024-09-12 18:01:07,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:07" (1/1) ... [2024-09-12 18:01:07,124 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 18:01:07,128 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 18:01:07,128 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 18:01:07,128 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 18:01:07,129 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:07" (1/1) ... [2024-09-12 18:01:07,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:01:07,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:07,168 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 18:01:07,172 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 18:01:07,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 18:01:07,225 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 18:01:07,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 18:01:07,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 18:01:07,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 18:01:07,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 18:01:07,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 18:01:07,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 18:01:07,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 18:01:07,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 18:01:07,295 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 18:01:07,298 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 18:01:07,489 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-09-12 18:01:07,490 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 18:01:07,516 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 18:01:07,517 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 18:01:07,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:01:07 BoogieIcfgContainer [2024-09-12 18:01:07,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 18:01:07,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 18:01:07,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 18:01:07,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 18:01:07,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 06:01:06" (1/3) ... [2024-09-12 18:01:07,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3972da2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:01:07, skipping insertion in model container [2024-09-12 18:01:07,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:07" (2/3) ... [2024-09-12 18:01:07,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3972da2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:01:07, skipping insertion in model container [2024-09-12 18:01:07,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:01:07" (3/3) ... [2024-09-12 18:01:07,541 INFO L112 eAbstractionObserver]: Analyzing ICFG nest-if3.i [2024-09-12 18:01:07,560 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 18:01:07,560 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-09-12 18:01:07,634 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 18:01:07,642 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;@2b6bdf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 18:01:07,643 INFO L337 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-09-12 18:01:07,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 30 states have internal predecessors, (39), 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 18:01:07,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-12 18:01:07,656 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:07,657 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:07,658 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:07,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:07,663 INFO L85 PathProgramCache]: Analyzing trace with hash 16829259, now seen corresponding path program 1 times [2024-09-12 18:01:07,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:07,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52007728] [2024-09-12 18:01:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:07,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:08,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:08,034 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 18:01:08,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:08,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52007728] [2024-09-12 18:01:08,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52007728] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:08,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:01:08,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 18:01:08,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914780556] [2024-09-12 18:01:08,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:08,043 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:01:08,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:08,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:01:08,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:01:08,067 INFO L87 Difference]: Start difference. First operand has 37 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 30 states have internal predecessors, (39), 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 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:08,220 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2024-09-12 18:01:08,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:01:08,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-09-12 18:01:08,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:08,230 INFO L225 Difference]: With dead ends: 74 [2024-09-12 18:01:08,231 INFO L226 Difference]: Without dead ends: 39 [2024-09-12 18:01:08,234 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:01:08,239 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 26 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:08,241 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 129 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-12 18:01:08,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-09-12 18:01:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.36) internal successors, (34), 31 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:01:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2024-09-12 18:01:08,294 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 14 [2024-09-12 18:01:08,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:08,295 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2024-09-12 18:01:08,295 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:08,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2024-09-12 18:01:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-12 18:01:08,298 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:08,298 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:08,298 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 18:01:08,299 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:08,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:08,301 INFO L85 PathProgramCache]: Analyzing trace with hash 13928576, now seen corresponding path program 1 times [2024-09-12 18:01:08,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:08,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405521513] [2024-09-12 18:01:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:08,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:08,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:08,435 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 18:01:08,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:08,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405521513] [2024-09-12 18:01:08,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405521513] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:08,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:01:08,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:01:08,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818774653] [2024-09-12 18:01:08,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:08,440 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:01:08,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:08,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:01:08,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:01:08,442 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 18:01:08,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:08,496 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2024-09-12 18:01:08,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:01:08,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-09-12 18:01:08,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:08,501 INFO L225 Difference]: With dead ends: 58 [2024-09-12 18:01:08,502 INFO L226 Difference]: Without dead ends: 56 [2024-09-12 18:01:08,502 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:01:08,504 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:08,505 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 83 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-12 18:01:08,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2024-09-12 18:01:08,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 38 states have (on average 1.394736842105263) internal successors, (53), 45 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 18:01:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-09-12 18:01:08,522 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 14 [2024-09-12 18:01:08,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:08,522 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-09-12 18:01:08,522 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 18:01:08,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:08,523 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-09-12 18:01:08,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-12 18:01:08,524 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:08,524 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:08,524 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 18:01:08,525 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:08,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:08,525 INFO L85 PathProgramCache]: Analyzing trace with hash 13922618, now seen corresponding path program 1 times [2024-09-12 18:01:08,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:08,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719271240] [2024-09-12 18:01:08,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:08,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:08,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:08,581 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 18:01:08,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:08,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719271240] [2024-09-12 18:01:08,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719271240] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:08,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:01:08,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:01:08,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328621615] [2024-09-12 18:01:08,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:08,587 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:01:08,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:08,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:01:08,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:01:08,588 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 18:01:08,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:08,641 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2024-09-12 18:01:08,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:01:08,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-09-12 18:01:08,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:08,643 INFO L225 Difference]: With dead ends: 76 [2024-09-12 18:01:08,644 INFO L226 Difference]: Without dead ends: 75 [2024-09-12 18:01:08,645 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 18:01:08,646 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:08,648 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 55 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:08,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-12 18:01:08,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-09-12 18:01:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 62 states have internal predecessors, (75), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 18:01:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 90 transitions. [2024-09-12 18:01:08,675 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 90 transitions. Word has length 14 [2024-09-12 18:01:08,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:08,675 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 90 transitions. [2024-09-12 18:01:08,675 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 18:01:08,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:08,676 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 90 transitions. [2024-09-12 18:01:08,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 18:01:08,678 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:08,678 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:08,678 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 18:01:08,679 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:08,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:08,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1145874170, now seen corresponding path program 1 times [2024-09-12 18:01:08,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:08,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356599221] [2024-09-12 18:01:08,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:08,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:08,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:08,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 18:01:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:08,779 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 18:01:08,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:08,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356599221] [2024-09-12 18:01:08,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356599221] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:08,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:01:08,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:01:08,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547271158] [2024-09-12 18:01:08,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:08,782 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:01:08,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:08,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:01:08,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:01:08,783 INFO L87 Difference]: Start difference. First operand 71 states and 90 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:01:08,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:08,863 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2024-09-12 18:01:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:01:08,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-09-12 18:01:08,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:08,866 INFO L225 Difference]: With dead ends: 71 [2024-09-12 18:01:08,867 INFO L226 Difference]: Without dead ends: 70 [2024-09-12 18:01:08,868 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:01:08,868 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:08,869 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 70 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:08,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-12 18:01:08,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-09-12 18:01:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 61 states have internal predecessors, (72), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 18:01:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2024-09-12 18:01:08,882 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 17 [2024-09-12 18:01:08,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:08,882 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2024-09-12 18:01:08,883 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:01:08,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:08,883 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2024-09-12 18:01:08,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 18:01:08,884 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:08,884 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:08,884 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 18:01:08,884 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:08,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:08,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1162360832, now seen corresponding path program 1 times [2024-09-12 18:01:08,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:08,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208572694] [2024-09-12 18:01:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:08,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:08,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:08,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 18:01:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:08,959 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 18:01:08,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:08,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208572694] [2024-09-12 18:01:08,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208572694] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:08,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:01:08,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:01:08,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323459443] [2024-09-12 18:01:08,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:08,962 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:01:08,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:08,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:01:08,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:01:08,963 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:01:09,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:09,013 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-09-12 18:01:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:01:09,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-09-12 18:01:09,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:09,014 INFO L225 Difference]: With dead ends: 70 [2024-09-12 18:01:09,014 INFO L226 Difference]: Without dead ends: 69 [2024-09-12 18:01:09,015 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:01:09,016 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 16 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:09,016 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 84 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-12 18:01:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-09-12 18:01:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 60 states have internal predecessors, (69), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 18:01:09,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2024-09-12 18:01:09,042 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 18 [2024-09-12 18:01:09,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:09,043 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2024-09-12 18:01:09,043 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:01:09,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:09,044 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2024-09-12 18:01:09,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-12 18:01:09,044 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:09,045 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:09,045 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 18:01:09,045 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:09,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:09,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1399850445, now seen corresponding path program 1 times [2024-09-12 18:01:09,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:09,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488207130] [2024-09-12 18:01:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:09,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:09,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:09,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 18:01:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:09,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:09,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488207130] [2024-09-12 18:01:09,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488207130] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:09,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:01:09,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 18:01:09,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390083510] [2024-09-12 18:01:09,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:09,173 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 18:01:09,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:09,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 18:01:09,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:01:09,175 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:01:09,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:09,294 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2024-09-12 18:01:09,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 18:01:09,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-09-12 18:01:09,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:09,296 INFO L225 Difference]: With dead ends: 72 [2024-09-12 18:01:09,298 INFO L226 Difference]: Without dead ends: 70 [2024-09-12 18:01:09,298 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:01:09,299 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:09,299 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 103 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:09,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-12 18:01:09,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2024-09-12 18:01:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 49 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 18:01:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-09-12 18:01:09,317 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 23 [2024-09-12 18:01:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:09,317 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-09-12 18:01:09,318 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:01:09,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:09,318 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-09-12 18:01:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 18:01:09,319 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:09,319 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:09,319 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-12 18:01:09,319 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:09,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:09,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2122091178, now seen corresponding path program 1 times [2024-09-12 18:01:09,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:09,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824764149] [2024-09-12 18:01:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:09,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:09,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:09,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:09,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824764149] [2024-09-12 18:01:09,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824764149] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:09,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612924574] [2024-09-12 18:01:09,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:09,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:09,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:09,385 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 18:01:09,387 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 18:01:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:09,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:01:09,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:09,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:01:09,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612924574] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:09,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:01:09,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-12 18:01:09,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173369603] [2024-09-12 18:01:09,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:09,494 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:01:09,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:09,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:01:09,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:01:09,495 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 18:01:09,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:09,532 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2024-09-12 18:01:09,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:01:09,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 21 [2024-09-12 18:01:09,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:09,533 INFO L225 Difference]: With dead ends: 57 [2024-09-12 18:01:09,533 INFO L226 Difference]: Without dead ends: 56 [2024-09-12 18:01:09,534 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:01:09,534 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 16 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:09,535 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 135 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:09,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-12 18:01:09,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-12 18:01:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 18:01:09,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-09-12 18:01:09,548 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 21 [2024-09-12 18:01:09,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:09,550 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-09-12 18:01:09,550 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 18:01:09,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-09-12 18:01:09,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 18:01:09,551 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:09,552 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:09,570 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 18:01:09,752 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 18:01:09,753 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:09,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:09,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1360317167, now seen corresponding path program 1 times [2024-09-12 18:01:09,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:09,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715306685] [2024-09-12 18:01:09,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:09,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:09,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:09,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:09,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715306685] [2024-09-12 18:01:09,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715306685] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:09,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945102437] [2024-09-12 18:01:09,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:09,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:09,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:09,820 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 18:01:09,823 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 18:01:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:09,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:01:09,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:09,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:09,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945102437] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:09,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:09,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-09-12 18:01:09,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051878177] [2024-09-12 18:01:09,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:09,984 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 18:01:09,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:09,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 18:01:09,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:01:09,985 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 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 18:01:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:10,082 INFO L93 Difference]: Finished difference Result 138 states and 170 transitions. [2024-09-12 18:01:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 18:01:10,082 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 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 22 [2024-09-12 18:01:10,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:10,084 INFO L225 Difference]: With dead ends: 138 [2024-09-12 18:01:10,084 INFO L226 Difference]: Without dead ends: 137 [2024-09-12 18:01:10,084 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:01:10,085 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 58 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:10,085 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 128 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:10,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-09-12 18:01:10,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2024-09-12 18:01:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 120 states have internal predecessors, (143), 11 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 18:01:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 164 transitions. [2024-09-12 18:01:10,118 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 164 transitions. Word has length 22 [2024-09-12 18:01:10,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:10,118 INFO L474 AbstractCegarLoop]: Abstraction has 134 states and 164 transitions. [2024-09-12 18:01:10,118 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 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 18:01:10,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:10,119 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 164 transitions. [2024-09-12 18:01:10,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-12 18:01:10,121 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:10,121 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:10,140 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:10,325 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:10,326 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:10,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:10,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1092552952, now seen corresponding path program 1 times [2024-09-12 18:01:10,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:10,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225728038] [2024-09-12 18:01:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:10,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:10,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:10,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:10,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225728038] [2024-09-12 18:01:10,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225728038] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:10,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767310989] [2024-09-12 18:01:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:10,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:10,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:10,376 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 18:01:10,378 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 18:01:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:10,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:01:10,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:10,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:10,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767310989] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:10,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:10,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-09-12 18:01:10,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711588277] [2024-09-12 18:01:10,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:10,497 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:01:10,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:10,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:01:10,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:01:10,498 INFO L87 Difference]: Start difference. First operand 134 states and 164 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 18:01:10,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:10,562 INFO L93 Difference]: Finished difference Result 226 states and 278 transitions. [2024-09-12 18:01:10,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:01:10,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 23 [2024-09-12 18:01:10,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:10,564 INFO L225 Difference]: With dead ends: 226 [2024-09-12 18:01:10,565 INFO L226 Difference]: Without dead ends: 225 [2024-09-12 18:01:10,565 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:01:10,566 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 48 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:10,566 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 88 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:10,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-09-12 18:01:10,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 221. [2024-09-12 18:01:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 200 states have (on average 1.18) internal successors, (236), 201 states have internal predecessors, (236), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 18:01:10,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 269 transitions. [2024-09-12 18:01:10,596 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 269 transitions. Word has length 23 [2024-09-12 18:01:10,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:10,596 INFO L474 AbstractCegarLoop]: Abstraction has 221 states and 269 transitions. [2024-09-12 18:01:10,596 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 18:01:10,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 269 transitions. [2024-09-12 18:01:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-12 18:01:10,599 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:10,599 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:10,616 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 18:01:10,799 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-09-12 18:01:10,800 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:10,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash 81055321, now seen corresponding path program 2 times [2024-09-12 18:01:10,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:10,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920048016] [2024-09-12 18:01:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:10,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:10,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:10,967 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:10,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:10,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920048016] [2024-09-12 18:01:10,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920048016] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:10,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601265883] [2024-09-12 18:01:10,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:01:10,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:10,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:10,970 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 18:01:10,972 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 18:01:11,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-12 18:01:11,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:11,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:01:11,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-12 18:01:11,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-12 18:01:11,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601265883] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:11,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:11,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 17 [2024-09-12 18:01:11,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385648952] [2024-09-12 18:01:11,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:11,222 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 18:01:11,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:11,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 18:01:11,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-09-12 18:01:11,223 INFO L87 Difference]: Start difference. First operand 221 states and 269 transitions. Second operand has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 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 18:01:11,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:11,491 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2024-09-12 18:01:11,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 18:01:11,492 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 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 43 [2024-09-12 18:01:11,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:11,493 INFO L225 Difference]: With dead ends: 292 [2024-09-12 18:01:11,494 INFO L226 Difference]: Without dead ends: 291 [2024-09-12 18:01:11,494 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2024-09-12 18:01:11,495 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 97 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:11,495 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 165 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:11,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-09-12 18:01:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 78. [2024-09-12 18:01:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 68 states have (on average 1.161764705882353) internal successors, (79), 68 states have internal predecessors, (79), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 18:01:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2024-09-12 18:01:11,518 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 43 [2024-09-12 18:01:11,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:11,518 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2024-09-12 18:01:11,519 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 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 18:01:11,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:11,520 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2024-09-12 18:01:11,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-12 18:01:11,522 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:11,522 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:11,540 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:11,722 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:11,723 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:11,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:11,723 INFO L85 PathProgramCache]: Analyzing trace with hash -610316102, now seen corresponding path program 2 times [2024-09-12 18:01:11,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:11,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696354432] [2024-09-12 18:01:11,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:11,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:11,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:11,807 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:11,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:11,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696354432] [2024-09-12 18:01:11,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696354432] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:11,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654099907] [2024-09-12 18:01:11,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:01:11,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:11,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:11,809 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 18:01:11,811 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 18:01:11,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:01:11,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:11,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:01:11,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:11,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:12,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654099907] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:12,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:12,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-09-12 18:01:12,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383750718] [2024-09-12 18:01:12,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:12,020 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 18:01:12,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:12,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 18:01:12,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:01:12,021 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 12 states have internal predecessors, (91), 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 18:01:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:12,114 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2024-09-12 18:01:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 18:01:12,115 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 12 states have internal predecessors, (91), 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 50 [2024-09-12 18:01:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:12,116 INFO L225 Difference]: With dead ends: 157 [2024-09-12 18:01:12,116 INFO L226 Difference]: Without dead ends: 156 [2024-09-12 18:01:12,116 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:01:12,117 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 125 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:12,117 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 155 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:12,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-09-12 18:01:12,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2024-09-12 18:01:12,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 140 states have (on average 1.1642857142857144) internal successors, (163), 140 states have internal predecessors, (163), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 18:01:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 188 transitions. [2024-09-12 18:01:12,167 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 188 transitions. Word has length 50 [2024-09-12 18:01:12,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:12,167 INFO L474 AbstractCegarLoop]: Abstraction has 156 states and 188 transitions. [2024-09-12 18:01:12,167 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 12 states have internal predecessors, (91), 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 18:01:12,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:12,168 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 188 transitions. [2024-09-12 18:01:12,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 18:01:12,169 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:12,170 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:12,187 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 18:01:12,374 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 18:01:12,375 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:12,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:12,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1166891002, now seen corresponding path program 3 times [2024-09-12 18:01:12,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:12,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155702937] [2024-09-12 18:01:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:12,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:12,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:12,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:12,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155702937] [2024-09-12 18:01:12,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155702937] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:12,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308301074] [2024-09-12 18:01:12,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:01:12,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:12,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:12,670 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 18:01:12,672 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 18:01:12,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 18:01:12,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:12,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 18:01:12,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:12,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:13,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308301074] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:13,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:13,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-09-12 18:01:13,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210209786] [2024-09-12 18:01:13,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:13,224 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 18:01:13,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:13,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 18:01:13,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2024-09-12 18:01:13,225 INFO L87 Difference]: Start difference. First operand 156 states and 188 transitions. Second operand has 24 states, 23 states have (on average 8.652173913043478) internal successors, (199), 24 states have internal predecessors, (199), 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 18:01:13,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:13,442 INFO L93 Difference]: Finished difference Result 313 states and 392 transitions. [2024-09-12 18:01:13,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 18:01:13,443 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 8.652173913043478) internal successors, (199), 24 states have internal predecessors, (199), 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 104 [2024-09-12 18:01:13,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:13,445 INFO L225 Difference]: With dead ends: 313 [2024-09-12 18:01:13,445 INFO L226 Difference]: Without dead ends: 312 [2024-09-12 18:01:13,446 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2024-09-12 18:01:13,446 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 248 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:13,446 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 303 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:13,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-09-12 18:01:13,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2024-09-12 18:01:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 284 states have (on average 1.1654929577464788) internal successors, (331), 284 states have internal predecessors, (331), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 18:01:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 380 transitions. [2024-09-12 18:01:13,487 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 380 transitions. Word has length 104 [2024-09-12 18:01:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:13,487 INFO L474 AbstractCegarLoop]: Abstraction has 312 states and 380 transitions. [2024-09-12 18:01:13,488 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 8.652173913043478) internal successors, (199), 24 states have internal predecessors, (199), 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 18:01:13,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:13,488 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 380 transitions. [2024-09-12 18:01:13,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-12 18:01:13,490 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:13,491 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:13,509 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:13,691 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 18:01:13,692 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:13,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:13,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1174694278, now seen corresponding path program 4 times [2024-09-12 18:01:13,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:13,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955075609] [2024-09-12 18:01:13,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:13,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:14,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:14,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:14,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955075609] [2024-09-12 18:01:14,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955075609] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:14,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84715830] [2024-09-12 18:01:14,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:01:14,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:14,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:14,514 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 18:01:14,516 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 18:01:14,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:01:14,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:14,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 18:01:14,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:14,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:14,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:15,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84715830] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:15,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:15,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-09-12 18:01:15,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788238145] [2024-09-12 18:01:15,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:15,796 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 18:01:15,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:15,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 18:01:15,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 18:01:15,799 INFO L87 Difference]: Start difference. First operand 312 states and 380 transitions. Second operand has 48 states, 47 states have (on average 8.829787234042554) internal successors, (415), 48 states have internal predecessors, (415), 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 18:01:16,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:16,373 INFO L93 Difference]: Finished difference Result 625 states and 788 transitions. [2024-09-12 18:01:16,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-12 18:01:16,374 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 8.829787234042554) internal successors, (415), 48 states have internal predecessors, (415), 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 212 [2024-09-12 18:01:16,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:16,378 INFO L225 Difference]: With dead ends: 625 [2024-09-12 18:01:16,378 INFO L226 Difference]: Without dead ends: 624 [2024-09-12 18:01:16,379 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 402 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 18:01:16,380 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 537 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:16,380 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 638 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:01:16,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-09-12 18:01:16,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2024-09-12 18:01:16,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 572 states have (on average 1.166083916083916) internal successors, (667), 572 states have internal predecessors, (667), 49 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 18:01:16,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 764 transitions. [2024-09-12 18:01:16,460 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 764 transitions. Word has length 212 [2024-09-12 18:01:16,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:16,461 INFO L474 AbstractCegarLoop]: Abstraction has 624 states and 764 transitions. [2024-09-12 18:01:16,461 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 8.829787234042554) internal successors, (415), 48 states have internal predecessors, (415), 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 18:01:16,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:16,462 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 764 transitions. [2024-09-12 18:01:16,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-09-12 18:01:16,468 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:16,469 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:16,489 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 18:01:16,670 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:16,671 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:16,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:16,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2091854982, now seen corresponding path program 5 times [2024-09-12 18:01:16,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:16,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061480838] [2024-09-12 18:01:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:19,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:19,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:19,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061480838] [2024-09-12 18:01:19,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061480838] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:19,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11469292] [2024-09-12 18:01:19,403 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:01:19,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:19,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:19,405 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 18:01:19,407 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 18:01:19,640 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-09-12 18:01:19,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:19,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 18:01:19,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:20,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:23,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11469292] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:23,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:23,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2024-09-12 18:01:23,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623279829] [2024-09-12 18:01:23,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:23,015 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-12 18:01:23,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:23,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-12 18:01:23,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-09-12 18:01:23,023 INFO L87 Difference]: Start difference. First operand 624 states and 764 transitions. Second operand has 96 states, 95 states have (on average 8.91578947368421) internal successors, (847), 96 states have internal predecessors, (847), 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 18:01:25,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:25,172 INFO L93 Difference]: Finished difference Result 1249 states and 1580 transitions. [2024-09-12 18:01:25,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-09-12 18:01:25,173 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 8.91578947368421) internal successors, (847), 96 states have internal predecessors, (847), 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 428 [2024-09-12 18:01:25,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:25,180 INFO L225 Difference]: With dead ends: 1249 [2024-09-12 18:01:25,180 INFO L226 Difference]: Without dead ends: 1248 [2024-09-12 18:01:25,183 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 810 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-09-12 18:01:25,183 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 1150 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:25,183 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 1268 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 18:01:25,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2024-09-12 18:01:25,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1248. [2024-09-12 18:01:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1148 states have (on average 1.166376306620209) internal successors, (1339), 1148 states have internal predecessors, (1339), 97 states have call successors, (97), 3 states have call predecessors, (97), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-09-12 18:01:25,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1532 transitions. [2024-09-12 18:01:25,300 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1532 transitions. Word has length 428 [2024-09-12 18:01:25,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:25,301 INFO L474 AbstractCegarLoop]: Abstraction has 1248 states and 1532 transitions. [2024-09-12 18:01:25,301 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 8.91578947368421) internal successors, (847), 96 states have internal predecessors, (847), 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 18:01:25,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:25,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1532 transitions. [2024-09-12 18:01:25,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2024-09-12 18:01:25,322 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:25,322 INFO L216 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 95, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:25,340 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:25,522 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:25,523 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:25,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:25,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1856090758, now seen corresponding path program 6 times [2024-09-12 18:01:25,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:25,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716194772] [2024-09-12 18:01:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:25,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:34,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 39903 backedges. 0 proven. 39903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:34,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:34,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716194772] [2024-09-12 18:01:34,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716194772] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:34,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212009072] [2024-09-12 18:01:34,254 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:01:34,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:34,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:34,256 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 18:01:34,256 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 18:01:34,742 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2024-09-12 18:01:34,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:34,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-12 18:01:34,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 39903 backedges. 0 proven. 39903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:35,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 39903 backedges. 0 proven. 39903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:44,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212009072] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:44,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:44,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2024-09-12 18:01:44,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538333683] [2024-09-12 18:01:44,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:44,927 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-09-12 18:01:44,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:44,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-09-12 18:01:44,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2024-09-12 18:01:44,945 INFO L87 Difference]: Start difference. First operand 1248 states and 1532 transitions. Second operand has 192 states, 191 states have (on average 8.958115183246074) internal successors, (1711), 192 states have internal predecessors, (1711), 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 18:02:01,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:01,477 INFO L93 Difference]: Finished difference Result 2497 states and 3164 transitions. [2024-09-12 18:02:01,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-09-12 18:02:01,478 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 8.958115183246074) internal successors, (1711), 192 states have internal predecessors, (1711), 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 860 [2024-09-12 18:02:01,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:01,492 INFO L225 Difference]: With dead ends: 2497 [2024-09-12 18:02:01,493 INFO L226 Difference]: Without dead ends: 2496 [2024-09-12 18:02:01,498 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1817 GetRequests, 1626 SyntacticMatches, 1 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2024-09-12 18:02:01,499 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 2366 mSDsluCounter, 2495 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:01,499 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2556 Valid, 2519 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 18:02:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2024-09-12 18:02:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2496. [2024-09-12 18:02:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2300 states have (on average 1.1665217391304348) internal successors, (2683), 2300 states have internal predecessors, (2683), 193 states have call successors, (193), 3 states have call predecessors, (193), 2 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2024-09-12 18:02:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3068 transitions. [2024-09-12 18:02:01,770 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3068 transitions. Word has length 860 [2024-09-12 18:02:01,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:01,772 INFO L474 AbstractCegarLoop]: Abstraction has 2496 states and 3068 transitions. [2024-09-12 18:02:01,773 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 8.958115183246074) internal successors, (1711), 192 states have internal predecessors, (1711), 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 18:02:01,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3068 transitions. [2024-09-12 18:02:01,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1725 [2024-09-12 18:02:01,836 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:01,836 INFO L216 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 191, 190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:01,853 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-12 18:02:02,037 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 18:02:02,037 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:02:02,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:02,038 INFO L85 PathProgramCache]: Analyzing trace with hash -419085958, now seen corresponding path program 7 times [2024-09-12 18:02:02,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:02,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939707507] [2024-09-12 18:02:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:02,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:36,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 162735 backedges. 0 proven. 162735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:36,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:36,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939707507] [2024-09-12 18:02:36,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939707507] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:36,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389284450] [2024-09-12 18:02:36,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:02:36,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:36,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:36,812 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 18:02:36,813 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 18:02:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:37,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 3272 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-09-12 18:02:37,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 162735 backedges. 0 proven. 162735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:39,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 162735 backedges. 0 proven. 162735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:14,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389284450] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:14,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:14,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2024-09-12 18:03:14,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120123582] [2024-09-12 18:03:14,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:14,606 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2024-09-12 18:03:14,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:14,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2024-09-12 18:03:14,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2024-09-12 18:03:14,638 INFO L87 Difference]: Start difference. First operand 2496 states and 3068 transitions. Second operand has 384 states, 383 states have (on average 8.97911227154047) internal successors, (3439), 384 states have internal predecessors, (3439), 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)