./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-new/nested-1.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-new/nested-1.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 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a --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 18:09:57,500 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 18:09:57,563 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 18:09:57,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 18:09:57,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 18:09:57,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 18:09:57,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 18:09:57,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 18:09:57,599 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 18:09:57,600 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 18:09:57,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 18:09:57,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 18:09:57,601 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 18:09:57,601 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 18:09:57,601 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 18:09:57,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 18:09:57,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 18:09:57,604 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 18:09:57,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 18:09:57,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 18:09:57,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 18:09:57,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 18:09:57,608 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 18:09:57,608 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 18:09:57,608 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 18:09:57,608 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 18:09:57,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 18:09:57,608 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 18:09:57,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 18:09:57,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 18:09:57,609 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 18:09:57,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 18:09:57,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:09:57,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 18:09:57,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 18:09:57,610 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 18:09:57,610 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 18:09:57,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 18:09:57,618 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 18:09:57,618 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 18:09:57,618 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 18:09:57,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 18:09:57,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 18:09:57,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 18:09:57,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 18:09:57,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 18:09:57,896 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 18:09:57,897 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 18:09:57,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-new/nested-1.i [2024-09-12 18:09:59,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 18:09:59,445 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 18:09:59,448 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-new/nested-1.i [2024-09-12 18:09:59,456 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/36684894d/7489994b847941dfaa792c171a5153d0/FLAG2c39821fb [2024-09-12 18:09:59,469 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/36684894d/7489994b847941dfaa792c171a5153d0 [2024-09-12 18:09:59,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 18:09:59,472 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 18:09:59,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 18:09:59,476 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 18:09:59,480 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 18:09:59,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:09:59" (1/1) ... [2024-09-12 18:09:59,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@199321df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59, skipping insertion in model container [2024-09-12 18:09:59,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:09:59" (1/1) ... [2024-09-12 18:09:59,497 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 18:09:59,626 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-new/nested-1.i[891,904] [2024-09-12 18:09:59,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:09:59,654 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 18:09:59,665 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-new/nested-1.i[891,904] [2024-09-12 18:09:59,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:09:59,683 INFO L204 MainTranslator]: Completed translation [2024-09-12 18:09:59,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59 WrapperNode [2024-09-12 18:09:59,683 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 18:09:59,684 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 18:09:59,684 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 18:09:59,684 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 18:09:59,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59" (1/1) ... [2024-09-12 18:09:59,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59" (1/1) ... [2024-09-12 18:09:59,706 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 18:09:59,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 18:09:59,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 18:09:59,708 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 18:09:59,708 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 18:09:59,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59" (1/1) ... [2024-09-12 18:09:59,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59" (1/1) ... [2024-09-12 18:09:59,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59" (1/1) ... [2024-09-12 18:09:59,729 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 18:09:59,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59" (1/1) ... [2024-09-12 18:09:59,731 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59" (1/1) ... [2024-09-12 18:09:59,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59" (1/1) ... [2024-09-12 18:09:59,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59" (1/1) ... [2024-09-12 18:09:59,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59" (1/1) ... [2024-09-12 18:09:59,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59" (1/1) ... [2024-09-12 18:09:59,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 18:09:59,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 18:09:59,743 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 18:09:59,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 18:09:59,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59" (1/1) ... [2024-09-12 18:09:59,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:09:59,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:09:59,776 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 18:09:59,779 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 18:09:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 18:09:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 18:09:59,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 18:09:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 18:09:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 18:09:59,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 18:09:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 18:09:59,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 18:09:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 18:09:59,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 18:09:59,878 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 18:09:59,880 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 18:09:59,998 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-09-12 18:09:59,998 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 18:10:00,027 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 18:10:00,030 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 18:10:00,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:10:00 BoogieIcfgContainer [2024-09-12 18:10:00,030 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 18:10:00,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 18:10:00,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 18:10:00,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 18:10:00,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 06:09:59" (1/3) ... [2024-09-12 18:10:00,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2e682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:10:00, skipping insertion in model container [2024-09-12 18:10:00,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:09:59" (2/3) ... [2024-09-12 18:10:00,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2e682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:10:00, skipping insertion in model container [2024-09-12 18:10:00,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:10:00" (3/3) ... [2024-09-12 18:10:00,036 INFO L112 eAbstractionObserver]: Analyzing ICFG nested-1.i [2024-09-12 18:10:00,050 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 18:10:00,051 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-09-12 18:10:00,106 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 18:10:00,114 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;@14f70a15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 18:10:00,114 INFO L337 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-09-12 18:10:00,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.7) internal successors, (34), 27 states have internal predecessors, (34), 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 18:10:00,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 18:10:00,124 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:00,124 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:00,125 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:00,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:00,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1675727445, now seen corresponding path program 1 times [2024-09-12 18:10:00,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:00,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402052516] [2024-09-12 18:10:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:00,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:00,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:00,360 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 18:10:00,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:00,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402052516] [2024-09-12 18:10:00,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402052516] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:10:00,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:10:00,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:10:00,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755385118] [2024-09-12 18:10:00,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:10:00,367 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:10:00,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:00,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:10:00,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:10:00,387 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.7) internal successors, (34), 27 states have internal predecessors, (34), 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 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:00,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:00,430 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2024-09-12 18:10:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:10:00,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-12 18:10:00,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:00,438 INFO L225 Difference]: With dead ends: 74 [2024-09-12 18:10:00,439 INFO L226 Difference]: Without dead ends: 37 [2024-09-12 18:10:00,442 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 18:10:00,445 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:00,446 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:00,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-12 18:10:00,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2024-09-12 18:10:00,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 29 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-09-12 18:10:00,488 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 10 [2024-09-12 18:10:00,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:00,490 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-09-12 18:10:00,490 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:00,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-09-12 18:10:00,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 18:10:00,492 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:00,492 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:00,492 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 18:10:00,493 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:00,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:00,494 INFO L85 PathProgramCache]: Analyzing trace with hash -239291867, now seen corresponding path program 1 times [2024-09-12 18:10:00,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:00,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348774769] [2024-09-12 18:10:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:00,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:00,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:00,591 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 18:10:00,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:00,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348774769] [2024-09-12 18:10:00,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348774769] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:10:00,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:10:00,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:10:00,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481122698] [2024-09-12 18:10:00,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:10:00,597 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:10:00,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:00,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:10:00,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:10:00,599 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:00,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:00,641 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2024-09-12 18:10:00,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:10:00,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-12 18:10:00,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:00,642 INFO L225 Difference]: With dead ends: 54 [2024-09-12 18:10:00,642 INFO L226 Difference]: Without dead ends: 49 [2024-09-12 18:10:00,643 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:10:00,644 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 28 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:00,644 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 49 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:00,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-12 18:10:00,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2024-09-12 18:10:00,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.5) internal successors, (36), 30 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:00,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-09-12 18:10:00,662 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 12 [2024-09-12 18:10:00,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:00,663 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-09-12 18:10:00,664 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:00,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:00,665 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-09-12 18:10:00,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 18:10:00,666 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:00,666 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:00,667 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 18:10:00,667 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:00,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:00,668 INFO L85 PathProgramCache]: Analyzing trace with hash 407941768, now seen corresponding path program 1 times [2024-09-12 18:10:00,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:00,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504898156] [2024-09-12 18:10:00,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:00,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:00,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:00,728 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 18:10:00,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:00,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504898156] [2024-09-12 18:10:00,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504898156] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:10:00,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:10:00,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:10:00,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638248173] [2024-09-12 18:10:00,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:10:00,730 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:10:00,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:00,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:10:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:10:00,732 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 18:10:00,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:00,769 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2024-09-12 18:10:00,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:10:00,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 11 [2024-09-12 18:10:00,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:00,779 INFO L225 Difference]: With dead ends: 63 [2024-09-12 18:10:00,780 INFO L226 Difference]: Without dead ends: 36 [2024-09-12 18:10:00,781 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:10:00,782 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:00,783 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 54 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:00,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-12 18:10:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2024-09-12 18:10:00,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.380952380952381) internal successors, (29), 27 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-09-12 18:10:00,796 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 11 [2024-09-12 18:10:00,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:00,797 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-09-12 18:10:00,797 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 18:10:00,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:00,800 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-09-12 18:10:00,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 18:10:00,800 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:00,800 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:00,800 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 18:10:00,800 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:00,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:00,801 INFO L85 PathProgramCache]: Analyzing trace with hash -238658126, now seen corresponding path program 1 times [2024-09-12 18:10:00,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:00,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702500203] [2024-09-12 18:10:00,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:00,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:00,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:00,872 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 18:10:00,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:00,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702500203] [2024-09-12 18:10:00,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702500203] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:10:00,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:10:00,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:10:00,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621140749] [2024-09-12 18:10:00,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:10:00,873 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:10:00,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:00,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:10:00,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:10:00,874 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:00,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:00,902 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-09-12 18:10:00,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:10:00,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-12 18:10:00,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:00,904 INFO L225 Difference]: With dead ends: 40 [2024-09-12 18:10:00,904 INFO L226 Difference]: Without dead ends: 38 [2024-09-12 18:10:00,904 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 18:10:00,905 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:00,905 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 68 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:00,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-12 18:10:00,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-09-12 18:10:00,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.4) internal successors, (35), 31 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-09-12 18:10:00,912 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 12 [2024-09-12 18:10:00,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:00,913 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-09-12 18:10:00,913 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:00,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:00,914 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-09-12 18:10:00,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 18:10:00,914 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:00,914 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:00,915 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 18:10:00,915 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:00,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:00,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1693288587, now seen corresponding path program 1 times [2024-09-12 18:10:00,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:00,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631131164] [2024-09-12 18:10:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:00,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:01,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:01,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:01,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631131164] [2024-09-12 18:10:01,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631131164] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:01,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229411584] [2024-09-12 18:10:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:01,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:01,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:01,022 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 18:10:01,024 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 18:10:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:01,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:10:01,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:01,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:10:01,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229411584] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:10:01,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:10:01,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-09-12 18:10:01,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328428292] [2024-09-12 18:10:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:10:01,113 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:10:01,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:10:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:10:01,114 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:01,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:01,134 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-09-12 18:10:01,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:10:01,134 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-09-12 18:10:01,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:01,135 INFO L225 Difference]: With dead ends: 36 [2024-09-12 18:10:01,135 INFO L226 Difference]: Without dead ends: 35 [2024-09-12 18:10:01,135 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:10:01,136 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:01,136 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 73 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:01,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-12 18:10:01,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-12 18:10:01,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.32) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:01,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2024-09-12 18:10:01,144 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 15 [2024-09-12 18:10:01,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:01,144 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-09-12 18:10:01,144 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), 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 18:10:01,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:01,145 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2024-09-12 18:10:01,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 18:10:01,145 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:01,145 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:01,159 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 18:10:01,346 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:01,346 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:01,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:01,347 INFO L85 PathProgramCache]: Analyzing trace with hash -952340120, now seen corresponding path program 1 times [2024-09-12 18:10:01,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:01,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483666622] [2024-09-12 18:10:01,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:01,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:01,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:10:01,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:01,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483666622] [2024-09-12 18:10:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483666622] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:10:01,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:10:01,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:10:01,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800863710] [2024-09-12 18:10:01,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:10:01,381 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:10:01,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:01,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:10:01,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:10:01,382 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 18:10:01,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:01,413 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2024-09-12 18:10:01,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:10:01,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-12 18:10:01,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:01,415 INFO L225 Difference]: With dead ends: 50 [2024-09-12 18:10:01,416 INFO L226 Difference]: Without dead ends: 48 [2024-09-12 18:10:01,417 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 18:10:01,417 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:01,417 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-12 18:10:01,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2024-09-12 18:10:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 40 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2024-09-12 18:10:01,437 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 16 [2024-09-12 18:10:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:01,439 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2024-09-12 18:10:01,440 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 18:10:01,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:01,440 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2024-09-12 18:10:01,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 18:10:01,440 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:01,440 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:01,441 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-12 18:10:01,441 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:01,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:01,441 INFO L85 PathProgramCache]: Analyzing trace with hash -952338582, now seen corresponding path program 1 times [2024-09-12 18:10:01,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:01,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005743333] [2024-09-12 18:10:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:01,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:01,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:01,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:01,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:01,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005743333] [2024-09-12 18:10:01,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005743333] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:01,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747331642] [2024-09-12 18:10:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:01,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:01,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:01,515 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 18:10:01,517 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 18:10:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:01,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:10:01,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:01,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:10:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:01,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747331642] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:10:01,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:10:01,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-09-12 18:10:01,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620031435] [2024-09-12 18:10:01,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:10:01,649 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 18:10:01,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:01,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 18:10:01,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:10:01,650 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 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 18:10:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:01,705 INFO L93 Difference]: Finished difference Result 109 states and 132 transitions. [2024-09-12 18:10:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 18:10:01,709 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-12 18:10:01,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:01,710 INFO L225 Difference]: With dead ends: 109 [2024-09-12 18:10:01,710 INFO L226 Difference]: Without dead ends: 108 [2024-09-12 18:10:01,711 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:10:01,711 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:01,712 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 113 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-12 18:10:01,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 97. [2024-09-12 18:10:01,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 92 states have internal predecessors, (117), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2024-09-12 18:10:01,738 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 16 [2024-09-12 18:10:01,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:01,738 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2024-09-12 18:10:01,739 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 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 18:10:01,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:01,739 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2024-09-12 18:10:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 18:10:01,739 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:01,739 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:01,764 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 18:10:01,940 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 18:10:01,940 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:01,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:01,941 INFO L85 PathProgramCache]: Analyzing trace with hash 542276306, now seen corresponding path program 1 times [2024-09-12 18:10:01,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:01,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685694563] [2024-09-12 18:10:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:01,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:01,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:01,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:01,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685694563] [2024-09-12 18:10:01,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685694563] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:01,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866348829] [2024-09-12 18:10:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:01,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:01,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:01,997 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 18:10:01,997 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 18:10:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:02,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:10:02,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:02,079 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 18:10:02,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:10:02,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866348829] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:10:02,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:10:02,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-12 18:10:02,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140319543] [2024-09-12 18:10:02,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:10:02,080 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:10:02,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:02,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:10:02,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:10:02,081 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:02,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:02,129 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2024-09-12 18:10:02,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:10:02,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-09-12 18:10:02,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:02,131 INFO L225 Difference]: With dead ends: 98 [2024-09-12 18:10:02,131 INFO L226 Difference]: Without dead ends: 97 [2024-09-12 18:10:02,131 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 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 18:10:02,132 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:02,132 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 92 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-12 18:10:02,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2024-09-12 18:10:02,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 91 states have internal predecessors, (112), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2024-09-12 18:10:02,149 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 17 [2024-09-12 18:10:02,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:02,149 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2024-09-12 18:10:02,149 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:02,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2024-09-12 18:10:02,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 18:10:02,150 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:02,150 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:02,165 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 18:10:02,354 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-12 18:10:02,355 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:02,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:02,355 INFO L85 PathProgramCache]: Analyzing trace with hash -369303629, now seen corresponding path program 1 times [2024-09-12 18:10:02,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:02,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318738030] [2024-09-12 18:10:02,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:02,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:02,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:02,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:02,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318738030] [2024-09-12 18:10:02,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318738030] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:02,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500359773] [2024-09-12 18:10:02,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:02,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:02,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:02,406 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 18:10:02,408 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 18:10:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:02,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:10:02,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:02,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:10:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:02,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500359773] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:10:02,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:10:02,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-09-12 18:10:02,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758719402] [2024-09-12 18:10:02,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:10:02,517 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 18:10:02,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:02,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 18:10:02,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:10:02,518 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 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 18:10:02,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:02,568 INFO L93 Difference]: Finished difference Result 121 states and 147 transitions. [2024-09-12 18:10:02,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 18:10:02,568 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-09-12 18:10:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:02,569 INFO L225 Difference]: With dead ends: 121 [2024-09-12 18:10:02,569 INFO L226 Difference]: Without dead ends: 120 [2024-09-12 18:10:02,569 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:10:02,570 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:02,570 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 112 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:02,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-12 18:10:02,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2024-09-12 18:10:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 107 states have (on average 1.2710280373831775) internal successors, (136), 111 states have internal predecessors, (136), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 140 transitions. [2024-09-12 18:10:02,607 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 140 transitions. Word has length 18 [2024-09-12 18:10:02,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:02,608 INFO L474 AbstractCegarLoop]: Abstraction has 116 states and 140 transitions. [2024-09-12 18:10:02,609 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 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 18:10:02,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:02,609 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 140 transitions. [2024-09-12 18:10:02,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 18:10:02,610 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:02,610 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:02,623 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 18:10:02,814 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:02,815 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:02,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:02,815 INFO L85 PathProgramCache]: Analyzing trace with hash 238137824, now seen corresponding path program 1 times [2024-09-12 18:10:02,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:02,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089121802] [2024-09-12 18:10:02,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:02,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:02,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:02,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:02,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089121802] [2024-09-12 18:10:02,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089121802] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:02,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790325688] [2024-09-12 18:10:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:02,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:02,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:02,934 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 18:10:02,935 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 18:10:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:02,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:10:02,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:03,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:03,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:10:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:03,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790325688] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:10:03,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:10:03,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-09-12 18:10:03,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877539612] [2024-09-12 18:10:03,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:10:03,057 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 18:10:03,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:03,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 18:10:03,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:10:03,058 INFO L87 Difference]: Start difference. First operand 116 states and 140 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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 18:10:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:03,132 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2024-09-12 18:10:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 18:10:03,132 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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 22 [2024-09-12 18:10:03,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:03,133 INFO L225 Difference]: With dead ends: 160 [2024-09-12 18:10:03,133 INFO L226 Difference]: Without dead ends: 83 [2024-09-12 18:10:03,134 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-09-12 18:10:03,134 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 44 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:03,135 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 102 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:03,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-12 18:10:03,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2024-09-12 18:10:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 72 states have (on average 1.2222222222222223) internal successors, (88), 76 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:03,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2024-09-12 18:10:03,148 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 22 [2024-09-12 18:10:03,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:03,149 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2024-09-12 18:10:03,149 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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 18:10:03,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:03,149 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2024-09-12 18:10:03,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 18:10:03,150 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:03,150 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:03,169 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 18:10:03,351 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-12 18:10:03,352 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:03,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:03,353 INFO L85 PathProgramCache]: Analyzing trace with hash 585491936, now seen corresponding path program 2 times [2024-09-12 18:10:03,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:03,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240222870] [2024-09-12 18:10:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:03,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:03,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 18:10:03,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:03,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240222870] [2024-09-12 18:10:03,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240222870] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:03,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195038308] [2024-09-12 18:10:03,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:10:03,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:03,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:03,425 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 18:10:03,426 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 18:10:03,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:10:03,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:10:03,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 18:10:03,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:03,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:10:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:03,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195038308] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:10:03,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:10:03,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 22 [2024-09-12 18:10:03,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172233319] [2024-09-12 18:10:03,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:10:03,691 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 18:10:03,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:03,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 18:10:03,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2024-09-12 18:10:03,692 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 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 18:10:04,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:04,369 INFO L93 Difference]: Finished difference Result 200 states and 229 transitions. [2024-09-12 18:10:04,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 18:10:04,370 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 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 32 [2024-09-12 18:10:04,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:04,371 INFO L225 Difference]: With dead ends: 200 [2024-09-12 18:10:04,371 INFO L226 Difference]: Without dead ends: 152 [2024-09-12 18:10:04,372 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=856, Invalid=3304, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 18:10:04,373 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 305 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:04,373 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 117 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:10:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-12 18:10:04,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 97. [2024-09-12 18:10:04,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 92 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2024-09-12 18:10:04,387 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 32 [2024-09-12 18:10:04,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:04,387 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2024-09-12 18:10:04,387 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 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 18:10:04,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:04,388 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2024-09-12 18:10:04,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-12 18:10:04,388 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:04,388 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:04,404 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 18:10:04,588 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 18:10:04,590 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:04,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:04,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1809166198, now seen corresponding path program 2 times [2024-09-12 18:10:04,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:04,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393957377] [2024-09-12 18:10:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:04,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:04,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:04,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:04,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393957377] [2024-09-12 18:10:04,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393957377] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:04,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64490452] [2024-09-12 18:10:04,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:10:04,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:04,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:04,691 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 18:10:04,692 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 18:10:04,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:10:04,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:10:04,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 18:10:04,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:04,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:10:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:04,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64490452] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:10:04,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:10:04,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-09-12 18:10:04,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137841667] [2024-09-12 18:10:04,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:10:04,899 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 18:10:04,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:04,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 18:10:04,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-09-12 18:10:04,900 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 24 states have internal predecessors, (62), 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 18:10:04,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:04,962 INFO L93 Difference]: Finished difference Result 156 states and 182 transitions. [2024-09-12 18:10:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 18:10:04,962 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 24 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-09-12 18:10:04,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:04,963 INFO L225 Difference]: With dead ends: 156 [2024-09-12 18:10:04,963 INFO L226 Difference]: Without dead ends: 155 [2024-09-12 18:10:04,964 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-09-12 18:10:04,964 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 31 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:04,964 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 164 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:04,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-12 18:10:04,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 150. [2024-09-12 18:10:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 141 states have (on average 1.177304964539007) internal successors, (166), 145 states have internal predecessors, (166), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 170 transitions. [2024-09-12 18:10:04,985 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 170 transitions. Word has length 31 [2024-09-12 18:10:04,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:04,986 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 170 transitions. [2024-09-12 18:10:04,986 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 24 states have internal predecessors, (62), 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 18:10:04,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:04,986 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 170 transitions. [2024-09-12 18:10:04,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 18:10:04,987 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:04,987 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:05,003 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 18:10:05,191 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:05,193 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:05,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:05,193 INFO L85 PathProgramCache]: Analyzing trace with hash 853078227, now seen corresponding path program 2 times [2024-09-12 18:10:05,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:05,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807935204] [2024-09-12 18:10:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:05,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:05,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:05,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:05,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807935204] [2024-09-12 18:10:05,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807935204] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:05,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889276894] [2024-09-12 18:10:05,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:10:05,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:05,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:05,331 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 18:10:05,332 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 18:10:05,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-12 18:10:05,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:10:05,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:10:05,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:05,408 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-12 18:10:05,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:10:05,465 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-12 18:10:05,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889276894] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:10:05,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:10:05,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 17 [2024-09-12 18:10:05,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343790238] [2024-09-12 18:10:05,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:10:05,467 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 18:10:05,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:05,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 18:10:05,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-09-12 18:10:05,468 INFO L87 Difference]: Start difference. First operand 150 states and 170 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 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 18:10:05,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:05,627 INFO L93 Difference]: Finished difference Result 155 states and 170 transitions. [2024-09-12 18:10:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 18:10:05,627 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 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 33 [2024-09-12 18:10:05,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:05,628 INFO L225 Difference]: With dead ends: 155 [2024-09-12 18:10:05,628 INFO L226 Difference]: Without dead ends: 154 [2024-09-12 18:10:05,629 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2024-09-12 18:10:05,629 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 25 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:05,630 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 78 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:05,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-09-12 18:10:05,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 149. [2024-09-12 18:10:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 141 states have (on average 1.1134751773049645) internal successors, (157), 144 states have internal predecessors, (157), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 161 transitions. [2024-09-12 18:10:05,648 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 161 transitions. Word has length 33 [2024-09-12 18:10:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:05,648 INFO L474 AbstractCegarLoop]: Abstraction has 149 states and 161 transitions. [2024-09-12 18:10:05,648 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 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 18:10:05,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 161 transitions. [2024-09-12 18:10:05,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 18:10:05,650 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:05,650 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:05,665 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 18:10:05,854 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:05,855 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:05,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:05,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1510984566, now seen corresponding path program 3 times [2024-09-12 18:10:05,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:05,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298732278] [2024-09-12 18:10:05,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:05,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:06,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:06,141 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:06,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:06,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298732278] [2024-09-12 18:10:06,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298732278] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:06,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224850888] [2024-09-12 18:10:06,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:10:06,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:06,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:06,144 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 18:10:06,145 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 18:10:06,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 18:10:06,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:10:06,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-12 18:10:06,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:06,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:10:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:06,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224850888] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:10:06,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:10:06,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-09-12 18:10:06,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469893967] [2024-09-12 18:10:06,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:10:06,696 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 18:10:06,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:06,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 18:10:06,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 18:10:06,697 INFO L87 Difference]: Start difference. First operand 149 states and 161 transitions. Second operand has 48 states, 47 states have (on average 2.595744680851064) internal successors, (122), 48 states have internal predecessors, (122), 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 18:10:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:06,903 INFO L93 Difference]: Finished difference Result 704 states and 833 transitions. [2024-09-12 18:10:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-12 18:10:06,903 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.595744680851064) internal successors, (122), 48 states have internal predecessors, (122), 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 61 [2024-09-12 18:10:06,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:06,907 INFO L225 Difference]: With dead ends: 704 [2024-09-12 18:10:06,907 INFO L226 Difference]: Without dead ends: 703 [2024-09-12 18:10:06,908 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 18:10:06,909 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 216 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:06,909 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 343 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:10:06,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-09-12 18:10:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 679. [2024-09-12 18:10:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 671 states have (on average 1.0894187779433682) internal successors, (731), 674 states have internal predecessors, (731), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 735 transitions. [2024-09-12 18:10:07,008 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 735 transitions. Word has length 61 [2024-09-12 18:10:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:07,008 INFO L474 AbstractCegarLoop]: Abstraction has 679 states and 735 transitions. [2024-09-12 18:10:07,008 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.595744680851064) internal successors, (122), 48 states have internal predecessors, (122), 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 18:10:07,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:07,009 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 735 transitions. [2024-09-12 18:10:07,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-12 18:10:07,014 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:07,014 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:07,031 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-12 18:10:07,214 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 18:10:07,215 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:07,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:07,215 INFO L85 PathProgramCache]: Analyzing trace with hash 563542627, now seen corresponding path program 1 times [2024-09-12 18:10:07,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:07,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435596803] [2024-09-12 18:10:07,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:07,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:07,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 261 proven. 112 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-09-12 18:10:07,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:07,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435596803] [2024-09-12 18:10:07,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435596803] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:07,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857690036] [2024-09-12 18:10:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:07,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:07,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:07,444 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 18:10:07,445 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 18:10:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:07,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-12 18:10:07,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 261 proven. 112 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-09-12 18:10:07,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:10:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 261 proven. 112 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-09-12 18:10:07,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857690036] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:10:07,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:10:07,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2024-09-12 18:10:07,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183496611] [2024-09-12 18:10:07,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:10:07,924 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-12 18:10:07,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:07,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-12 18:10:07,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1061, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 18:10:07,925 INFO L87 Difference]: Start difference. First operand 679 states and 735 transitions. Second operand has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 38 states have internal predecessors, (102), 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 18:10:08,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:08,140 INFO L93 Difference]: Finished difference Result 992 states and 1072 transitions. [2024-09-12 18:10:08,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 18:10:08,141 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 38 states have internal predecessors, (102), 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 86 [2024-09-12 18:10:08,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:08,143 INFO L225 Difference]: With dead ends: 992 [2024-09-12 18:10:08,143 INFO L226 Difference]: Without dead ends: 610 [2024-09-12 18:10:08,145 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 144 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=403, Invalid=1319, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 18:10:08,145 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 60 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:08,145 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 173 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:10:08,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2024-09-12 18:10:08,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 601. [2024-09-12 18:10:08,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 593 states have (on average 1.06070826306914) internal successors, (629), 596 states have internal predecessors, (629), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:08,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 633 transitions. [2024-09-12 18:10:08,223 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 633 transitions. Word has length 86 [2024-09-12 18:10:08,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:08,223 INFO L474 AbstractCegarLoop]: Abstraction has 601 states and 633 transitions. [2024-09-12 18:10:08,223 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 38 states have internal predecessors, (102), 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 18:10:08,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 633 transitions. [2024-09-12 18:10:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-09-12 18:10:08,225 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:08,225 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:08,237 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 18:10:08,425 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 18:10:08,425 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:08,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:08,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1766287117, now seen corresponding path program 2 times [2024-09-12 18:10:08,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:08,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597094115] [2024-09-12 18:10:08,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:08,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:08,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 0 proven. 524 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-09-12 18:10:08,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:08,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597094115] [2024-09-12 18:10:08,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597094115] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:08,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331050044] [2024-09-12 18:10:08,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:10:08,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:08,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:08,531 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:10:08,533 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 18:10:08,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:10:08,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:10:08,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:10:08,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 524 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-09-12 18:10:08,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:10:08,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331050044] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:10:08,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:10:08,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-09-12 18:10:08,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437485857] [2024-09-12 18:10:08,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:10:08,663 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:10:08,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:08,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:10:08,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:10:08,664 INFO L87 Difference]: Start difference. First operand 601 states and 633 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 18:10:08,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:08,779 INFO L93 Difference]: Finished difference Result 601 states and 633 transitions. [2024-09-12 18:10:08,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:10:08,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 116 [2024-09-12 18:10:08,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:08,781 INFO L225 Difference]: With dead ends: 601 [2024-09-12 18:10:08,781 INFO L226 Difference]: Without dead ends: 600 [2024-09-12 18:10:08,782 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:10:08,782 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:08,782 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-09-12 18:10:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2024-09-12 18:10:08,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 593 states have (on average 1.0556492411467115) internal successors, (626), 595 states have internal predecessors, (626), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:08,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 630 transitions. [2024-09-12 18:10:08,855 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 630 transitions. Word has length 116 [2024-09-12 18:10:08,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:08,855 INFO L474 AbstractCegarLoop]: Abstraction has 600 states and 630 transitions. [2024-09-12 18:10:08,855 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 18:10:08,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:08,856 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 630 transitions. [2024-09-12 18:10:08,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-12 18:10:08,860 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:08,860 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:08,873 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 18:10:09,061 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 18:10:09,061 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:09,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:09,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1079674144, now seen corresponding path program 1 times [2024-09-12 18:10:09,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:09,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624861137] [2024-09-12 18:10:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:09,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:09,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-09-12 18:10:09,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:09,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624861137] [2024-09-12 18:10:09,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624861137] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:09,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344510896] [2024-09-12 18:10:09,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:09,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:09,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:09,149 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:10:09,150 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 18:10:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:09,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:10:09,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-09-12 18:10:09,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:10:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-09-12 18:10:09,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344510896] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:10:09,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:10:09,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-09-12 18:10:09,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726830965] [2024-09-12 18:10:09,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:10:09,424 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 18:10:09,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 18:10:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:10:09,424 INFO L87 Difference]: Start difference. First operand 600 states and 630 transitions. Second operand has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:09,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:09,561 INFO L93 Difference]: Finished difference Result 780 states and 843 transitions. [2024-09-12 18:10:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 18:10:09,561 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2024-09-12 18:10:09,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:09,564 INFO L225 Difference]: With dead ends: 780 [2024-09-12 18:10:09,564 INFO L226 Difference]: Without dead ends: 779 [2024-09-12 18:10:09,565 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:10:09,565 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:09,565 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 107 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:09,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-09-12 18:10:09,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 775. [2024-09-12 18:10:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 768 states have (on average 1.0859375) internal successors, (834), 770 states have internal predecessors, (834), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:09,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 838 transitions. [2024-09-12 18:10:09,662 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 838 transitions. Word has length 117 [2024-09-12 18:10:09,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:09,663 INFO L474 AbstractCegarLoop]: Abstraction has 775 states and 838 transitions. [2024-09-12 18:10:09,663 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:09,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:09,663 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 838 transitions. [2024-09-12 18:10:09,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-09-12 18:10:09,664 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:09,664 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:09,677 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 18:10:09,868 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 18:10:09,869 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:09,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:09,869 INFO L85 PathProgramCache]: Analyzing trace with hash -271247419, now seen corresponding path program 3 times [2024-09-12 18:10:09,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:09,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97730932] [2024-09-12 18:10:09,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:09,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:10,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 0 proven. 527 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-09-12 18:10:10,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:10,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97730932] [2024-09-12 18:10:10,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97730932] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:10,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331427013] [2024-09-12 18:10:10,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:10:10,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:10,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:10,006 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:10:10,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 18:10:10,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-12 18:10:10,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:10:10,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:10:10,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 0 proven. 527 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-09-12 18:10:10,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:10:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 0 proven. 527 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-09-12 18:10:10,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331427013] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:10:10,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:10:10,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-09-12 18:10:10,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363533675] [2024-09-12 18:10:10,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:10:10,470 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 18:10:10,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:10,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 18:10:10,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2024-09-12 18:10:10,471 INFO L87 Difference]: Start difference. First operand 775 states and 838 transitions. Second operand has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 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 18:10:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:10,627 INFO L93 Difference]: Finished difference Result 785 states and 844 transitions. [2024-09-12 18:10:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 18:10:10,627 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 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 122 [2024-09-12 18:10:10,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:10,630 INFO L225 Difference]: With dead ends: 785 [2024-09-12 18:10:10,630 INFO L226 Difference]: Without dead ends: 780 [2024-09-12 18:10:10,631 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2024-09-12 18:10:10,631 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 86 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:10,631 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 112 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:10,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2024-09-12 18:10:10,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 776. [2024-09-12 18:10:10,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 769 states have (on average 1.0806241872561768) internal successors, (831), 771 states have internal predecessors, (831), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 835 transitions. [2024-09-12 18:10:10,723 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 835 transitions. Word has length 122 [2024-09-12 18:10:10,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:10,723 INFO L474 AbstractCegarLoop]: Abstraction has 776 states and 835 transitions. [2024-09-12 18:10:10,724 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 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 18:10:10,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:10,724 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 835 transitions. [2024-09-12 18:10:10,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-12 18:10:10,726 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:10,726 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:10,742 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-12 18:10:10,926 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 18:10:10,926 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:10,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:10,927 INFO L85 PathProgramCache]: Analyzing trace with hash 981925002, now seen corresponding path program 4 times [2024-09-12 18:10:10,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:10,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139914537] [2024-09-12 18:10:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:10,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:11,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:11,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:11,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139914537] [2024-09-12 18:10:11,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139914537] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:11,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62855923] [2024-09-12 18:10:11,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:10:11,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:11,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:11,712 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:10:11,713 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 18:10:11,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:10:11,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:10:11,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-12 18:10:11,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:11,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:10:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:13,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62855923] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:10:13,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:10:13,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2024-09-12 18:10:13,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769661214] [2024-09-12 18:10:13,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:10:13,206 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-12 18:10:13,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:13,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-12 18:10:13,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2024-09-12 18:10:13,209 INFO L87 Difference]: Start difference. First operand 776 states and 835 transitions. Second operand has 96 states, 95 states have (on average 2.5473684210526315) internal successors, (242), 96 states have internal predecessors, (242), 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 18:10:14,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:14,023 INFO L93 Difference]: Finished difference Result 4115 states and 4855 transitions. [2024-09-12 18:10:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-09-12 18:10:14,023 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.5473684210526315) internal successors, (242), 96 states have internal predecessors, (242), 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 121 [2024-09-12 18:10:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:14,035 INFO L225 Difference]: With dead ends: 4115 [2024-09-12 18:10:14,035 INFO L226 Difference]: Without dead ends: 4114 [2024-09-12 18:10:14,037 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2823 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2024-09-12 18:10:14,038 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 531 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:14,038 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 451 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:10:14,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4114 states. [2024-09-12 18:10:14,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4114 to 4114. [2024-09-12 18:10:14,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4114 states, 4107 states have (on average 1.0321402483564646) internal successors, (4239), 4109 states have internal predecessors, (4239), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4114 states to 4114 states and 4243 transitions. [2024-09-12 18:10:14,651 INFO L78 Accepts]: Start accepts. Automaton has 4114 states and 4243 transitions. Word has length 121 [2024-09-12 18:10:14,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:14,651 INFO L474 AbstractCegarLoop]: Abstraction has 4114 states and 4243 transitions. [2024-09-12 18:10:14,652 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.5473684210526315) internal successors, (242), 96 states have internal predecessors, (242), 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 18:10:14,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:14,652 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 4243 transitions. [2024-09-12 18:10:14,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-09-12 18:10:14,659 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:14,660 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:14,673 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-12 18:10:14,860 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:14,860 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:14,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:14,861 INFO L85 PathProgramCache]: Analyzing trace with hash -421491574, now seen corresponding path program 5 times [2024-09-12 18:10:14,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:14,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092559454] [2024-09-12 18:10:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:14,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:17,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:17,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:17,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092559454] [2024-09-12 18:10:17,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092559454] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:17,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402198564] [2024-09-12 18:10:17,931 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:10:17,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:17,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:17,932 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:10:17,932 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 18:10:18,048 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-09-12 18:10:18,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:10:18,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-09-12 18:10:18,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:18,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:10:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:23,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402198564] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:10:23,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:10:23,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 191 [2024-09-12 18:10:23,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872965023] [2024-09-12 18:10:23,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:10:23,230 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-09-12 18:10:23,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:23,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-09-12 18:10:23,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2024-09-12 18:10:23,242 INFO L87 Difference]: Start difference. First operand 4114 states and 4243 transitions. Second operand has 192 states, 191 states have (on average 2.5235602094240837) internal successors, (482), 192 states have internal predecessors, (482), 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 18:10:26,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:26,913 INFO L93 Difference]: Finished difference Result 15137 states and 17507 transitions. [2024-09-12 18:10:26,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2024-09-12 18:10:26,914 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 2.5235602094240837) internal successors, (482), 192 states have internal predecessors, (482), 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 241 [2024-09-12 18:10:26,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:26,959 INFO L225 Difference]: With dead ends: 15137 [2024-09-12 18:10:26,959 INFO L226 Difference]: Without dead ends: 15136 [2024-09-12 18:10:26,966 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11415 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2024-09-12 18:10:26,966 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 1906 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:26,966 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1906 Valid, 887 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:10:26,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15136 states. [2024-09-12 18:10:29,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15136 to 15048. [2024-09-12 18:10:29,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15048 states, 15041 states have (on average 1.030317133169337) internal successors, (15497), 15043 states have internal predecessors, (15497), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:29,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15048 states to 15048 states and 15501 transitions. [2024-09-12 18:10:29,241 INFO L78 Accepts]: Start accepts. Automaton has 15048 states and 15501 transitions. Word has length 241 [2024-09-12 18:10:29,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:29,242 INFO L474 AbstractCegarLoop]: Abstraction has 15048 states and 15501 transitions. [2024-09-12 18:10:29,242 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 2.5235602094240837) internal successors, (482), 192 states have internal predecessors, (482), 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 18:10:29,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:29,242 INFO L276 IsEmpty]: Start isEmpty. Operand 15048 states and 15501 transitions. [2024-09-12 18:10:29,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-09-12 18:10:29,252 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:29,253 INFO L216 NwaCegarLoop]: trace histogram [50, 50, 50, 50, 50, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:29,271 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-12 18:10:29,453 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:29,454 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:29,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:29,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1878869509, now seen corresponding path program 2 times [2024-09-12 18:10:29,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:29,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204179351] [2024-09-12 18:10:29,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:29,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:29,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:29,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6425 backedges. 0 proven. 5250 refuted. 0 times theorem prover too weak. 1175 trivial. 0 not checked. [2024-09-12 18:10:29,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:29,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204179351] [2024-09-12 18:10:29,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204179351] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:29,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409624953] [2024-09-12 18:10:29,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:10:29,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:29,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:29,812 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:10:29,814 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 18:10:29,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-12 18:10:29,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:10:29,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:10:29,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6425 backedges. 0 proven. 2096 refuted. 0 times theorem prover too weak. 4329 trivial. 0 not checked. [2024-09-12 18:10:30,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:10:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6425 backedges. 0 proven. 2096 refuted. 0 times theorem prover too weak. 4329 trivial. 0 not checked. [2024-09-12 18:10:30,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409624953] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:10:30,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:10:30,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 17 [2024-09-12 18:10:30,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270467253] [2024-09-12 18:10:30,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:10:30,384 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 18:10:30,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:30,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 18:10:30,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-09-12 18:10:30,385 INFO L87 Difference]: Start difference. First operand 15048 states and 15501 transitions. Second operand has 18 states, 17 states have (on average 5.764705882352941) internal successors, (98), 18 states have internal predecessors, (98), 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 18:10:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:33,124 INFO L93 Difference]: Finished difference Result 17233 states and 17796 transitions. [2024-09-12 18:10:33,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 18:10:33,125 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.764705882352941) internal successors, (98), 18 states have internal predecessors, (98), 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 282 [2024-09-12 18:10:33,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:33,189 INFO L225 Difference]: With dead ends: 17233 [2024-09-12 18:10:33,189 INFO L226 Difference]: Without dead ends: 17232 [2024-09-12 18:10:33,197 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2024-09-12 18:10:33,198 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:33,198 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 96 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:10:33,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17232 states. [2024-09-12 18:10:35,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17232 to 15047. [2024-09-12 18:10:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15047 states, 15041 states have (on average 1.0273253108170999) internal successors, (15452), 15042 states have internal predecessors, (15452), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:36,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15047 states to 15047 states and 15456 transitions. [2024-09-12 18:10:36,013 INFO L78 Accepts]: Start accepts. Automaton has 15047 states and 15456 transitions. Word has length 282 [2024-09-12 18:10:36,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:36,014 INFO L474 AbstractCegarLoop]: Abstraction has 15047 states and 15456 transitions. [2024-09-12 18:10:36,014 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.764705882352941) internal successors, (98), 18 states have internal predecessors, (98), 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 18:10:36,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:36,014 INFO L276 IsEmpty]: Start isEmpty. Operand 15047 states and 15456 transitions. [2024-09-12 18:10:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-09-12 18:10:36,025 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:36,025 INFO L216 NwaCegarLoop]: trace histogram [50, 50, 50, 50, 50, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:36,037 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-12 18:10:36,225 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:36,226 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:36,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2067301440, now seen corresponding path program 4 times [2024-09-12 18:10:36,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:36,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343345625] [2024-09-12 18:10:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:36,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:36,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6430 backedges. 0 proven. 5255 refuted. 0 times theorem prover too weak. 1175 trivial. 0 not checked. [2024-09-12 18:10:36,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:36,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343345625] [2024-09-12 18:10:36,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343345625] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:36,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5758376] [2024-09-12 18:10:36,580 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:10:36,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:36,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:36,582 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:10:36,583 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 18:10:36,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:10:36,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:10:36,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 18:10:36,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6430 backedges. 0 proven. 5255 refuted. 0 times theorem prover too weak. 1175 trivial. 0 not checked. [2024-09-12 18:10:37,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:10:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6430 backedges. 0 proven. 5255 refuted. 0 times theorem prover too weak. 1175 trivial. 0 not checked. [2024-09-12 18:10:37,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5758376] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:10:37,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:10:37,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 34 [2024-09-12 18:10:37,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765212059] [2024-09-12 18:10:37,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:10:37,567 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 18:10:37,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:10:37,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 18:10:37,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=835, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 18:10:37,568 INFO L87 Difference]: Start difference. First operand 15047 states and 15456 transitions. Second operand has 34 states, 34 states have (on average 4.5) internal successors, (153), 34 states have internal predecessors, (153), 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 18:10:41,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:10:41,132 INFO L93 Difference]: Finished difference Result 20578 states and 21189 transitions. [2024-09-12 18:10:41,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 18:10:41,134 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.5) internal successors, (153), 34 states have internal predecessors, (153), 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 287 [2024-09-12 18:10:41,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:10:41,194 INFO L225 Difference]: With dead ends: 20578 [2024-09-12 18:10:41,194 INFO L226 Difference]: Without dead ends: 20573 [2024-09-12 18:10:41,204 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 554 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=403, Invalid=1319, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 18:10:41,205 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 158 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:10:41,206 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 131 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:10:41,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20573 states. [2024-09-12 18:10:44,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20573 to 20564. [2024-09-12 18:10:44,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20564 states, 20558 states have (on average 1.0242241463177353) internal successors, (21056), 20559 states have internal predecessors, (21056), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:10:44,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20564 states to 20564 states and 21060 transitions. [2024-09-12 18:10:44,562 INFO L78 Accepts]: Start accepts. Automaton has 20564 states and 21060 transitions. Word has length 287 [2024-09-12 18:10:44,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:10:44,563 INFO L474 AbstractCegarLoop]: Abstraction has 20564 states and 21060 transitions. [2024-09-12 18:10:44,563 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.5) internal successors, (153), 34 states have internal predecessors, (153), 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 18:10:44,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:44,563 INFO L276 IsEmpty]: Start isEmpty. Operand 20564 states and 21060 transitions. [2024-09-12 18:10:44,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-09-12 18:10:44,593 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:10:44,593 INFO L216 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:10:44,606 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-12 18:10:44,793 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:44,794 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:10:44,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:10:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1002197878, now seen corresponding path program 6 times [2024-09-12 18:10:44,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:10:44,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453424762] [2024-09-12 18:10:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:10:44,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:10:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:56,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:10:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:10:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:56,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:10:56,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453424762] [2024-09-12 18:10:56,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453424762] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:10:56,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284949201] [2024-09-12 18:10:56,672 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:10:56,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:10:56,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:10:56,673 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:10:56,674 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 18:10:56,946 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2024-09-12 18:10:56,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:10:56,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 191 conjuncts are in the unsatisfiable core [2024-09-12 18:10:56,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:10:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:10:57,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:11:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:11:16,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284949201] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:11:16,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:11:16,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 383 [2024-09-12 18:11:16,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317182138] [2024-09-12 18:11:16,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:11:16,104 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2024-09-12 18:11:16,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:11:16,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2024-09-12 18:11:16,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37055, Invalid=110017, Unknown=0, NotChecked=0, Total=147072 [2024-09-12 18:11:16,124 INFO L87 Difference]: Start difference. First operand 20564 states and 21060 transitions. Second operand has 384 states, 383 states have (on average 2.5117493472584855) internal successors, (962), 384 states have internal predecessors, (962), 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 18:11:46,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:11:46,926 INFO L93 Difference]: Finished difference Result 68922 states and 79182 transitions. [2024-09-12 18:11:46,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 382 states. [2024-09-12 18:11:46,926 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 2.5117493472584855) internal successors, (962), 384 states have internal predecessors, (962), 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 481 [2024-09-12 18:11:46,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:11:47,071 INFO L225 Difference]: With dead ends: 68922 [2024-09-12 18:11:47,072 INFO L226 Difference]: Without dead ends: 68921 [2024-09-12 18:11:47,098 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1154 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45879 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=37055, Invalid=110017, Unknown=0, NotChecked=0, Total=147072 [2024-09-12 18:11:47,098 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 4598 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4598 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 18:11:47,099 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4598 Valid, 1556 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 18:11:47,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68921 states. [2024-09-12 18:11:57,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68921 to 68831. [2024-09-12 18:11:57,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68831 states, 68825 states have (on average 1.022404649473302) internal successors, (70367), 68826 states have internal predecessors, (70367), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:11:57,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68831 states to 68831 states and 70371 transitions. [2024-09-12 18:11:57,903 INFO L78 Accepts]: Start accepts. Automaton has 68831 states and 70371 transitions. Word has length 481 [2024-09-12 18:11:57,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:11:57,904 INFO L474 AbstractCegarLoop]: Abstraction has 68831 states and 70371 transitions. [2024-09-12 18:11:57,904 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 2.5117493472584855) internal successors, (962), 384 states have internal predecessors, (962), 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 18:11:57,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:11:57,904 INFO L276 IsEmpty]: Start isEmpty. Operand 68831 states and 70371 transitions. [2024-09-12 18:11:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2024-09-12 18:11:57,947 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:11:57,948 INFO L216 NwaCegarLoop]: trace histogram [100, 100, 100, 100, 100, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:11:57,967 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-12 18:11:58,148 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-12 18:11:58,148 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:11:58,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:11:58,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1525694021, now seen corresponding path program 5 times [2024-09-12 18:11:58,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:11:58,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267627433] [2024-09-12 18:11:58,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:11:58,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:11:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:12:12,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:12:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:12:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 25985 backedges. 25659 proven. 317 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-12 18:12:12,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:12:12,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267627433] [2024-09-12 18:12:12,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267627433] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:12:12,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726111924] [2024-09-12 18:12:12,968 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:12:12,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:12:12,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:12:12,970 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:12:12,971 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 18:12:13,404 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 77 check-sat command(s) [2024-09-12 18:12:13,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:12:13,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 204 conjuncts are in the unsatisfiable core [2024-09-12 18:12:13,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:12:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 25985 backedges. 25976 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-12 18:12:14,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:12:14,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726111924] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:12:14,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:12:14,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [205] imperfect sequences [205] total 209 [2024-09-12 18:12:14,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907374894] [2024-09-12 18:12:14,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:12:14,030 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 205 states [2024-09-12 18:12:14,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:12:14,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2024-09-12 18:12:14,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10419, Invalid=33053, Unknown=0, NotChecked=0, Total=43472 [2024-09-12 18:12:14,038 INFO L87 Difference]: Start difference. First operand 68831 states and 70371 transitions. Second operand has 205 states, 205 states have (on average 2.7219512195121953) internal successors, (558), 204 states have internal predecessors, (558), 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 18:12:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:12:29,567 INFO L93 Difference]: Finished difference Result 68831 states and 70371 transitions. [2024-09-12 18:12:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2024-09-12 18:12:29,567 INFO L78 Accepts]: Start accepts. Automaton has has 205 states, 205 states have (on average 2.7219512195121953) internal successors, (558), 204 states have internal predecessors, (558), 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 562 [2024-09-12 18:12:29,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:12:29,737 INFO L225 Difference]: With dead ends: 68831 [2024-09-12 18:12:29,737 INFO L226 Difference]: Without dead ends: 68826 [2024-09-12 18:12:29,761 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11284 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=10425, Invalid=33465, Unknown=0, NotChecked=0, Total=43890 [2024-09-12 18:12:29,762 INFO L434 NwaCegarLoop]: 664 mSDtfsCounter, 407 mSDsluCounter, 7087 mSDsCounter, 0 mSdLazyCounter, 3975 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 7751 SdHoareTripleChecker+Invalid, 3975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:12:29,762 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 7751 Invalid, 3975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3975 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-12 18:12:29,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68826 states. [2024-09-12 18:12:32,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68826 to 9805. [2024-09-12 18:12:32,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9805 states, 9801 states have (on average 1.0194878073665952) internal successors, (9992), 9801 states have internal predecessors, (9992), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:12:32,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9805 states to 9805 states and 9995 transitions. [2024-09-12 18:12:32,935 INFO L78 Accepts]: Start accepts. Automaton has 9805 states and 9995 transitions. Word has length 562 [2024-09-12 18:12:32,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:12:32,936 INFO L474 AbstractCegarLoop]: Abstraction has 9805 states and 9995 transitions. [2024-09-12 18:12:32,936 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 205 states, 205 states have (on average 2.7219512195121953) internal successors, (558), 204 states have internal predecessors, (558), 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 18:12:32,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:12:32,937 INFO L276 IsEmpty]: Start isEmpty. Operand 9805 states and 9995 transitions. [2024-09-12 18:12:32,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2024-09-12 18:12:32,950 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:12:32,950 INFO L216 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:12:32,964 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-12 18:12:33,150 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 18:12:33,151 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:12:33,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:12:33,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1372187786, now seen corresponding path program 7 times [2024-09-12 18:12:33,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:12:33,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954492043] [2024-09-12 18:12:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:12:33,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:12:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:13:31,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:13:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:13:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:13:31,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:13:31,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954492043] [2024-09-12 18:13:31,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954492043] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:13:31,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469174611] [2024-09-12 18:13:31,494 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:13:31,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:13:31,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:13:31,495 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:13:31,496 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 18:13:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:13:31,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 2514 conjuncts, 383 conjuncts are in the unsatisfiable core [2024-09-12 18:13:31,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:13:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:13:32,640 INFO L327 TraceCheckSpWp]: Computing backward predicates...