./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/bh2017-ex-add.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/bh2017-ex-add.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 9067bcd66b4865bfb6aa4fb5c23797c879c2b81c36d918479d6650dc5a4b5edc --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 18:02:43,614 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 18:02:43,671 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 18:02:43,675 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 18:02:43,676 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 18:02:43,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 18:02:43,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 18:02:43,697 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 18:02:43,697 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 18:02:43,698 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 18:02:43,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 18:02:43,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 18:02:43,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 18:02:43,699 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 18:02:43,699 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 18:02:43,699 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 18:02:43,700 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 18:02:43,700 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 18:02:43,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 18:02:43,700 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 18:02:43,701 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 18:02:43,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 18:02:43,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 18:02:43,701 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 18:02:43,702 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 18:02:43,702 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 18:02:43,702 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 18:02:43,702 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 18:02:43,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 18:02:43,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 18:02:43,703 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 18:02:43,703 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 18:02:43,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:02:43,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 18:02:43,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 18:02:43,704 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 18:02:43,704 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 18:02:43,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 18:02:43,707 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 18:02:43,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 18:02:43,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 18:02:43,708 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 18:02:43,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9067bcd66b4865bfb6aa4fb5c23797c879c2b81c36d918479d6650dc5a4b5edc Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 18:02:43,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 18:02:43,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 18:02:44,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 18:02:44,001 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 18:02:44,002 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 18:02:44,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-lit/bh2017-ex-add.i [2024-09-12 18:02:45,433 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 18:02:45,609 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 18:02:45,610 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/bh2017-ex-add.i [2024-09-12 18:02:45,618 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d46c9f3b8/6ae014345b194f27a545ba52806d81ee/FLAG4d73d6308 [2024-09-12 18:02:45,634 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d46c9f3b8/6ae014345b194f27a545ba52806d81ee [2024-09-12 18:02:45,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 18:02:45,640 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 18:02:45,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 18:02:45,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 18:02:45,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 18:02:45,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:02:45" (1/1) ... [2024-09-12 18:02:45,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65df2ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45, skipping insertion in model container [2024-09-12 18:02:45,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:02:45" (1/1) ... [2024-09-12 18:02:45,665 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 18:02:45,824 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/bh2017-ex-add.i[802,815] [2024-09-12 18:02:45,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:02:45,851 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 18:02:45,862 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/bh2017-ex-add.i[802,815] [2024-09-12 18:02:45,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:02:45,892 INFO L204 MainTranslator]: Completed translation [2024-09-12 18:02:45,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45 WrapperNode [2024-09-12 18:02:45,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 18:02:45,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 18:02:45,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 18:02:45,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 18:02:45,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45" (1/1) ... [2024-09-12 18:02:45,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45" (1/1) ... [2024-09-12 18:02:45,906 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 18:02:45,906 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 18:02:45,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 18:02:45,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 18:02:45,907 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 18:02:45,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45" (1/1) ... [2024-09-12 18:02:45,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45" (1/1) ... [2024-09-12 18:02:45,914 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45" (1/1) ... [2024-09-12 18:02:45,921 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 18:02:45,921 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45" (1/1) ... [2024-09-12 18:02:45,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45" (1/1) ... [2024-09-12 18:02:45,923 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45" (1/1) ... [2024-09-12 18:02:45,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45" (1/1) ... [2024-09-12 18:02:45,925 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45" (1/1) ... [2024-09-12 18:02:45,926 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45" (1/1) ... [2024-09-12 18:02:45,930 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 18:02:45,931 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 18:02:45,931 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 18:02:45,931 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 18:02:45,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45" (1/1) ... [2024-09-12 18:02:45,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:02:45,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:45,979 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 18:02:45,986 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 18:02:46,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 18:02:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 18:02:46,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 18:02:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 18:02:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 18:02:46,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 18:02:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 18:02:46,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 18:02:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 18:02:46,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 18:02:46,089 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 18:02:46,093 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 18:02:46,275 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-12 18:02:46,275 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 18:02:46,292 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 18:02:46,292 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 18:02:46,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:02:46 BoogieIcfgContainer [2024-09-12 18:02:46,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 18:02:46,295 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 18:02:46,295 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 18:02:46,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 18:02:46,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 06:02:45" (1/3) ... [2024-09-12 18:02:46,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cdd34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:02:46, skipping insertion in model container [2024-09-12 18:02:46,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:02:45" (2/3) ... [2024-09-12 18:02:46,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cdd34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:02:46, skipping insertion in model container [2024-09-12 18:02:46,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:02:46" (3/3) ... [2024-09-12 18:02:46,301 INFO L112 eAbstractionObserver]: Analyzing ICFG bh2017-ex-add.i [2024-09-12 18:02:46,316 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 18:02:46,317 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-09-12 18:02:46,363 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 18:02:46,369 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;@24d918a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 18:02:46,369 INFO L337 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-09-12 18:02:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 23 states have (on average 1.608695652173913) internal successors, (37), 28 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 18:02:46,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 18:02:46,379 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:46,380 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:46,380 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:02:46,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:46,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2112102154, now seen corresponding path program 1 times [2024-09-12 18:02:46,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:46,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193175933] [2024-09-12 18:02:46,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:46,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:46,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:46,658 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 18:02:46,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:46,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193175933] [2024-09-12 18:02:46,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193175933] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:02:46,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:02:46,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 18:02:46,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832276101] [2024-09-12 18:02:46,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:02:46,668 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:02:46,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:46,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:02:46,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:02:46,687 INFO L87 Difference]: Start difference. First operand has 38 states, 23 states have (on average 1.608695652173913) internal successors, (37), 28 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 18:02:46,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:46,789 INFO L93 Difference]: Finished difference Result 90 states and 133 transitions. [2024-09-12 18:02:46,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:02:46,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 10 [2024-09-12 18:02:46,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:46,800 INFO L225 Difference]: With dead ends: 90 [2024-09-12 18:02:46,800 INFO L226 Difference]: Without dead ends: 57 [2024-09-12 18:02:46,803 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:02:46,808 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 21 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:46,809 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 148 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:02:46,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-12 18:02:46,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2024-09-12 18:02:46,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 39 states have internal predecessors, (53), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 18:02:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2024-09-12 18:02:46,855 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 10 [2024-09-12 18:02:46,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:46,855 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2024-09-12 18:02:46,855 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 18:02:46,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:46,856 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2024-09-12 18:02:46,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 18:02:46,857 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:46,857 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:46,858 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 18:02:46,858 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:02:46,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:46,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1645167713, now seen corresponding path program 1 times [2024-09-12 18:02:46,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:46,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968758142] [2024-09-12 18:02:46,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:46,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:46,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:46,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:02:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:46,996 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 18:02:46,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:46,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968758142] [2024-09-12 18:02:46,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968758142] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:02:46,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:02:46,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 18:02:47,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268182358] [2024-09-12 18:02:47,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:02:47,002 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:02:47,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:47,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:02:47,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:02:47,003 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:02:47,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:47,046 INFO L93 Difference]: Finished difference Result 89 states and 124 transitions. [2024-09-12 18:02:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:02:47,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-09-12 18:02:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:47,048 INFO L225 Difference]: With dead ends: 89 [2024-09-12 18:02:47,048 INFO L226 Difference]: Without dead ends: 87 [2024-09-12 18:02:47,048 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:02:47,049 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 21 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:47,049 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 149 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:02:47,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-12 18:02:47,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2024-09-12 18:02:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 56 states have (on average 1.5178571428571428) internal successors, (85), 60 states have internal predecessors, (85), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 18:02:47,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 112 transitions. [2024-09-12 18:02:47,061 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 112 transitions. Word has length 15 [2024-09-12 18:02:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:47,062 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 112 transitions. [2024-09-12 18:02:47,062 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:02:47,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 112 transitions. [2024-09-12 18:02:47,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 18:02:47,063 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:47,063 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:47,063 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 18:02:47,063 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:02:47,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:47,064 INFO L85 PathProgramCache]: Analyzing trace with hash 480868730, now seen corresponding path program 1 times [2024-09-12 18:02:47,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:47,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214487160] [2024-09-12 18:02:47,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:47,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:47,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:47,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:02:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:47,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:02:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:02:47,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:47,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214487160] [2024-09-12 18:02:47,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214487160] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:02:47,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:02:47,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:02:47,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80044655] [2024-09-12 18:02:47,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:02:47,110 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:02:47,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:47,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:02:47,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:02:47,111 INFO L87 Difference]: Start difference. First operand 79 states and 112 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:02:47,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:47,141 INFO L93 Difference]: Finished difference Result 161 states and 231 transitions. [2024-09-12 18:02:47,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:02:47,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-12 18:02:47,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:47,143 INFO L225 Difference]: With dead ends: 161 [2024-09-12 18:02:47,143 INFO L226 Difference]: Without dead ends: 87 [2024-09-12 18:02:47,144 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 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 18:02:47,145 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 15 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:47,145 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 112 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:02:47,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-12 18:02:47,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2024-09-12 18:02:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 62 states have (on average 1.467741935483871) internal successors, (91), 66 states have internal predecessors, (91), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 18:02:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2024-09-12 18:02:47,157 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 21 [2024-09-12 18:02:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:47,157 INFO L474 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2024-09-12 18:02:47,157 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:02:47,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2024-09-12 18:02:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-12 18:02:47,158 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:47,158 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:47,158 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 18:02:47,158 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:02:47,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:47,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1150900676, now seen corresponding path program 1 times [2024-09-12 18:02:47,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:47,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316921613] [2024-09-12 18:02:47,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:47,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:47,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:47,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:02:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:47,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:02:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:02:47,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:47,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316921613] [2024-09-12 18:02:47,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316921613] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:02:47,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:02:47,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:02:47,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975129909] [2024-09-12 18:02:47,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:02:47,238 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:02:47,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:47,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:02:47,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:02:47,240 INFO L87 Difference]: Start difference. First operand 85 states and 118 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:02:47,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:47,294 INFO L93 Difference]: Finished difference Result 173 states and 243 transitions. [2024-09-12 18:02:47,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:02:47,295 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), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-12 18:02:47,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:47,302 INFO L225 Difference]: With dead ends: 173 [2024-09-12 18:02:47,302 INFO L226 Difference]: Without dead ends: 93 [2024-09-12 18:02:47,303 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 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 18:02:47,304 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 13 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:47,304 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 112 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:02:47,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-12 18:02:47,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2024-09-12 18:02:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 72 states have internal predecessors, (97), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 18:02:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 124 transitions. [2024-09-12 18:02:47,315 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 124 transitions. Word has length 23 [2024-09-12 18:02:47,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:47,316 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 124 transitions. [2024-09-12 18:02:47,316 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), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:02:47,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:47,316 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 124 transitions. [2024-09-12 18:02:47,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-12 18:02:47,317 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:47,317 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:47,317 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 18:02:47,317 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:02:47,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:47,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1124316839, now seen corresponding path program 1 times [2024-09-12 18:02:47,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:47,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707786506] [2024-09-12 18:02:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:47,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:47,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:47,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:02:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:47,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:02:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:02:47,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:47,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707786506] [2024-09-12 18:02:47,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707786506] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:47,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005743333] [2024-09-12 18:02:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:47,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:47,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:47,471 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 18:02:47,475 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 18:02:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:47,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:02:47,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:02:47,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:02:47,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005743333] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:47,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:47,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-09-12 18:02:47,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156426152] [2024-09-12 18:02:47,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:47,690 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 18:02:47,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:47,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 18:02:47,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:02:47,691 INFO L87 Difference]: Start difference. First operand 91 states and 124 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-12 18:02:47,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:47,831 INFO L93 Difference]: Finished difference Result 212 states and 293 transitions. [2024-09-12 18:02:47,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 18:02:47,832 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 29 [2024-09-12 18:02:47,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:47,833 INFO L225 Difference]: With dead ends: 212 [2024-09-12 18:02:47,833 INFO L226 Difference]: Without dead ends: 126 [2024-09-12 18:02:47,834 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-09-12 18:02:47,835 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 74 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:47,836 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 256 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:02:47,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-09-12 18:02:47,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122. [2024-09-12 18:02:47,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 97 states have internal predecessors, (132), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 18:02:47,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 169 transitions. [2024-09-12 18:02:47,853 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 169 transitions. Word has length 29 [2024-09-12 18:02:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:47,853 INFO L474 AbstractCegarLoop]: Abstraction has 122 states and 169 transitions. [2024-09-12 18:02:47,854 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-12 18:02:47,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:47,854 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 169 transitions. [2024-09-12 18:02:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 18:02:47,855 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:47,855 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:47,868 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 18:02:48,059 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 18:02:48,059 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:02:48,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:48,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1544059170, now seen corresponding path program 1 times [2024-09-12 18:02:48,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:48,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988244655] [2024-09-12 18:02:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:48,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:48,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:48,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:02:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:48,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:02:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:48,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 18:02:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 18:02:48,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:48,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988244655] [2024-09-12 18:02:48,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988244655] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:48,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369294149] [2024-09-12 18:02:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:48,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:48,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:48,167 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 18:02:48,173 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 18:02:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:48,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:02:48,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:48,250 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 18:02:48,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 18:02:48,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369294149] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:48,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:48,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-09-12 18:02:48,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694884123] [2024-09-12 18:02:48,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:48,319 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 18:02:48,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:48,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 18:02:48,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:02:48,320 INFO L87 Difference]: Start difference. First operand 122 states and 169 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:02:48,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:48,414 INFO L93 Difference]: Finished difference Result 283 states and 400 transitions. [2024-09-12 18:02:48,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 18:02:48,414 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 34 [2024-09-12 18:02:48,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:48,416 INFO L225 Difference]: With dead ends: 283 [2024-09-12 18:02:48,416 INFO L226 Difference]: Without dead ends: 166 [2024-09-12 18:02:48,417 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-09-12 18:02:48,417 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 69 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:48,418 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 329 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:02:48,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-09-12 18:02:48,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2024-09-12 18:02:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 129 states have (on average 1.37984496124031) internal successors, (178), 131 states have internal predecessors, (178), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 18:02:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 229 transitions. [2024-09-12 18:02:48,435 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 229 transitions. Word has length 34 [2024-09-12 18:02:48,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:48,435 INFO L474 AbstractCegarLoop]: Abstraction has 164 states and 229 transitions. [2024-09-12 18:02:48,435 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:02:48,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:48,436 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 229 transitions. [2024-09-12 18:02:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-12 18:02:48,437 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:48,437 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:48,450 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 18:02:48,641 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 18:02:48,642 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:02:48,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:48,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1096290883, now seen corresponding path program 1 times [2024-09-12 18:02:48,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:48,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170288594] [2024-09-12 18:02:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:48,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:48,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:48,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:02:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:48,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:02:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:48,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 18:02:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:48,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 18:02:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 18:02:48,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:48,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170288594] [2024-09-12 18:02:48,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170288594] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:48,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577891769] [2024-09-12 18:02:48,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:48,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:48,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:48,753 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 18:02:48,756 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 18:02:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:48,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:02:48,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 18:02:48,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:02:48,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577891769] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:02:48,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:02:48,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-09-12 18:02:48,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468037436] [2024-09-12 18:02:48,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:02:48,846 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:02:48,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:48,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:02:48,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:02:48,847 INFO L87 Difference]: Start difference. First operand 164 states and 229 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:02:48,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:48,894 INFO L93 Difference]: Finished difference Result 164 states and 229 transitions. [2024-09-12 18:02:48,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:02:48,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2024-09-12 18:02:48,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:48,896 INFO L225 Difference]: With dead ends: 164 [2024-09-12 18:02:48,897 INFO L226 Difference]: Without dead ends: 163 [2024-09-12 18:02:48,897 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 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 18:02:48,897 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:48,898 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 82 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:02:48,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-12 18:02:48,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-09-12 18:02:48,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 129 states have (on average 1.3565891472868217) internal successors, (175), 130 states have internal predecessors, (175), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 18:02:48,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 226 transitions. [2024-09-12 18:02:48,951 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 226 transitions. Word has length 40 [2024-09-12 18:02:48,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:48,952 INFO L474 AbstractCegarLoop]: Abstraction has 163 states and 226 transitions. [2024-09-12 18:02:48,952 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:02:48,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:48,952 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 226 transitions. [2024-09-12 18:02:48,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-12 18:02:48,953 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:48,953 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:48,969 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 18:02:49,160 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 18:02:49,161 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:02:49,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:49,162 INFO L85 PathProgramCache]: Analyzing trace with hash -680120129, now seen corresponding path program 1 times [2024-09-12 18:02:49,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:49,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072080453] [2024-09-12 18:02:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:49,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:02:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:02:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 18:02:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 18:02:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 18:02:49,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:49,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072080453] [2024-09-12 18:02:49,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072080453] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:49,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939538199] [2024-09-12 18:02:49,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:49,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:49,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:49,250 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 18:02:49,251 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 18:02:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:02:49,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 18:02:49,316 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:02:49,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939538199] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:02:49,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:02:49,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-09-12 18:02:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747112160] [2024-09-12 18:02:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:02:49,317 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:02:49,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:02:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:02:49,317 INFO L87 Difference]: Start difference. First operand 163 states and 226 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:02:49,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:49,346 INFO L93 Difference]: Finished difference Result 163 states and 226 transitions. [2024-09-12 18:02:49,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:02:49,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-09-12 18:02:49,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:49,347 INFO L225 Difference]: With dead ends: 163 [2024-09-12 18:02:49,347 INFO L226 Difference]: Without dead ends: 162 [2024-09-12 18:02:49,348 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 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 18:02:49,348 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:49,348 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 114 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:02:49,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-09-12 18:02:49,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-09-12 18:02:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 129 states have (on average 1.3333333333333333) internal successors, (172), 129 states have internal predecessors, (172), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 18:02:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 223 transitions. [2024-09-12 18:02:49,382 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 223 transitions. Word has length 42 [2024-09-12 18:02:49,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:49,382 INFO L474 AbstractCegarLoop]: Abstraction has 162 states and 223 transitions. [2024-09-12 18:02:49,382 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:02:49,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:49,383 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 223 transitions. [2024-09-12 18:02:49,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-12 18:02:49,384 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:49,385 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:49,400 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 18:02:49,585 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:49,585 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:02:49,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:49,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1402459754, now seen corresponding path program 1 times [2024-09-12 18:02:49,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:49,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139282712] [2024-09-12 18:02:49,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:49,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:02:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:02:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 18:02:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 18:02:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 18:02:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 18:02:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 18:02:49,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:49,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139282712] [2024-09-12 18:02:49,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139282712] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:49,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612776764] [2024-09-12 18:02:49,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:49,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:49,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:49,704 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 18:02:49,711 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 18:02:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:49,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:02:49,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 18:02:49,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 18:02:49,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612776764] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:49,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:49,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-09-12 18:02:49,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781001057] [2024-09-12 18:02:49,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:49,903 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 18:02:49,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:49,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 18:02:49,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:02:49,904 INFO L87 Difference]: Start difference. First operand 162 states and 223 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 9 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-12 18:02:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:50,021 INFO L93 Difference]: Finished difference Result 454 states and 645 transitions. [2024-09-12 18:02:50,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 18:02:50,021 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 9 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 62 [2024-09-12 18:02:50,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:50,024 INFO L225 Difference]: With dead ends: 454 [2024-09-12 18:02:50,024 INFO L226 Difference]: Without dead ends: 297 [2024-09-12 18:02:50,025 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:02:50,025 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 84 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:50,026 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 256 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:02:50,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-09-12 18:02:50,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2024-09-12 18:02:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 243 states have (on average 1.337448559670782) internal successors, (325), 243 states have internal predecessors, (325), 47 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 18:02:50,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 418 transitions. [2024-09-12 18:02:50,060 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 418 transitions. Word has length 62 [2024-09-12 18:02:50,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:50,060 INFO L474 AbstractCegarLoop]: Abstraction has 297 states and 418 transitions. [2024-09-12 18:02:50,060 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 9 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-12 18:02:50,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:50,061 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 418 transitions. [2024-09-12 18:02:50,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 18:02:50,062 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:50,063 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:50,079 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-12 18:02:50,263 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:50,264 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:02:50,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:50,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1311269131, now seen corresponding path program 1 times [2024-09-12 18:02:50,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:50,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164626896] [2024-09-12 18:02:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:50,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:50,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:50,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:02:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:50,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:02:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:50,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 18:02:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:50,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 18:02:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:50,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 18:02:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:50,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 18:02:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 18:02:50,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:50,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164626896] [2024-09-12 18:02:50,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164626896] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:50,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872323247] [2024-09-12 18:02:50,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:50,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:50,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:50,348 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 18:02:50,349 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 18:02:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:50,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:02:50,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 18:02:50,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 18:02:50,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872323247] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:50,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:50,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-09-12 18:02:50,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829760240] [2024-09-12 18:02:50,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:50,509 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 18:02:50,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:50,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 18:02:50,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:02:50,510 INFO L87 Difference]: Start difference. First operand 297 states and 418 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-12 18:02:50,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:50,632 INFO L93 Difference]: Finished difference Result 859 states and 1233 transitions. [2024-09-12 18:02:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 18:02:50,633 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 64 [2024-09-12 18:02:50,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:50,636 INFO L225 Difference]: With dead ends: 859 [2024-09-12 18:02:50,636 INFO L226 Difference]: Without dead ends: 567 [2024-09-12 18:02:50,637 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:02:50,637 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 87 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:50,637 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 280 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:02:50,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2024-09-12 18:02:50,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2024-09-12 18:02:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 474 states have (on average 1.3312236286919832) internal successors, (631), 474 states have internal predecessors, (631), 86 states have call successors, (86), 7 states have call predecessors, (86), 6 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-09-12 18:02:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 802 transitions. [2024-09-12 18:02:50,687 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 802 transitions. Word has length 64 [2024-09-12 18:02:50,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:50,687 INFO L474 AbstractCegarLoop]: Abstraction has 567 states and 802 transitions. [2024-09-12 18:02:50,687 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-12 18:02:50,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 802 transitions. [2024-09-12 18:02:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-09-12 18:02:50,690 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:50,690 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:50,702 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 18:02:50,893 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-12 18:02:50,894 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:02:50,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:50,894 INFO L85 PathProgramCache]: Analyzing trace with hash -648460333, now seen corresponding path program 2 times [2024-09-12 18:02:50,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:50,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308164516] [2024-09-12 18:02:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:50,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:51,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:51,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:02:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:51,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:02:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:51,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 18:02:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:51,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 18:02:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:51,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 18:02:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:51,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 18:02:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:51,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 18:02:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:51,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 18:02:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:51,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 18:02:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:51,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 18:02:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:51,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 18:02:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:51,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 18:02:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 24 proven. 145 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 18:02:51,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:51,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308164516] [2024-09-12 18:02:51,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308164516] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:51,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743582775] [2024-09-12 18:02:51,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:02:51,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:51,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:51,086 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 18:02:51,087 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 18:02:51,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:02:51,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:02:51,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 18:02:51,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 24 proven. 145 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 18:02:51,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 24 proven. 145 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 18:02:51,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743582775] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:51,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:51,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-09-12 18:02:51,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383107197] [2024-09-12 18:02:51,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:51,455 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-12 18:02:51,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:51,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-12 18:02:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2024-09-12 18:02:51,456 INFO L87 Difference]: Start difference. First operand 567 states and 802 transitions. Second operand has 26 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 15 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 14 states have call predecessors, (27), 14 states have call successors, (27) [2024-09-12 18:02:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:51,663 INFO L93 Difference]: Finished difference Result 1669 states and 2403 transitions. [2024-09-12 18:02:51,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 18:02:51,664 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 15 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 14 states have call predecessors, (27), 14 states have call successors, (27) Word has length 119 [2024-09-12 18:02:51,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:51,669 INFO L225 Difference]: With dead ends: 1669 [2024-09-12 18:02:51,669 INFO L226 Difference]: Without dead ends: 1107 [2024-09-12 18:02:51,670 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2024-09-12 18:02:51,670 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 373 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:51,671 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 384 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:02:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2024-09-12 18:02:51,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1107. [2024-09-12 18:02:51,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 936 states have (on average 1.327991452991453) internal successors, (1243), 936 states have internal predecessors, (1243), 164 states have call successors, (164), 7 states have call predecessors, (164), 6 states have return successors, (163), 163 states have call predecessors, (163), 163 states have call successors, (163) [2024-09-12 18:02:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1570 transitions. [2024-09-12 18:02:51,768 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1570 transitions. Word has length 119 [2024-09-12 18:02:51,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:51,769 INFO L474 AbstractCegarLoop]: Abstraction has 1107 states and 1570 transitions. [2024-09-12 18:02:51,769 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.5) internal successors, (117), 26 states have internal predecessors, (117), 15 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 14 states have call predecessors, (27), 14 states have call successors, (27) [2024-09-12 18:02:51,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:51,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1570 transitions. [2024-09-12 18:02:51,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-12 18:02:51,771 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:51,771 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:51,787 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 18:02:51,971 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:51,972 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:02:51,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:51,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1590408952, now seen corresponding path program 2 times [2024-09-12 18:02:51,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:51,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581011784] [2024-09-12 18:02:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:51,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:52,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:52,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:02:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:52,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:02:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:52,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 18:02:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:52,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 18:02:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:52,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 18:02:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:52,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 18:02:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:52,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 18:02:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:52,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 18:02:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:52,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 18:02:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:52,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 18:02:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:52,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 18:02:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:52,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 18:02:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 24 proven. 155 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 18:02:52,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:52,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581011784] [2024-09-12 18:02:52,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581011784] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:52,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268072140] [2024-09-12 18:02:52,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:02:52,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:52,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:52,165 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 18:02:52,169 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 18:02:52,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:02:52,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:02:52,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 18:02:52,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 24 proven. 155 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 18:02:52,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 24 proven. 155 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 18:02:52,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268072140] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:52,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:52,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-09-12 18:02:52,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472288272] [2024-09-12 18:02:52,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:52,523 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-12 18:02:52,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:52,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-12 18:02:52,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2024-09-12 18:02:52,524 INFO L87 Difference]: Start difference. First operand 1107 states and 1570 transitions. Second operand has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 26 states have internal predecessors, (123), 15 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 14 states have call predecessors, (27), 14 states have call successors, (27) [2024-09-12 18:02:52,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:52,814 INFO L93 Difference]: Finished difference Result 3289 states and 4731 transitions. [2024-09-12 18:02:52,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 18:02:52,814 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 26 states have internal predecessors, (123), 15 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 14 states have call predecessors, (27), 14 states have call successors, (27) Word has length 121 [2024-09-12 18:02:52,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:52,822 INFO L225 Difference]: With dead ends: 3289 [2024-09-12 18:02:52,822 INFO L226 Difference]: Without dead ends: 2187 [2024-09-12 18:02:52,824 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2024-09-12 18:02:52,825 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 281 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:52,825 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 413 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:02:52,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2024-09-12 18:02:52,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2187. [2024-09-12 18:02:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 1866 states have (on average 1.3220793140407288) internal successors, (2467), 1866 states have internal predecessors, (2467), 314 states have call successors, (314), 7 states have call predecessors, (314), 6 states have return successors, (313), 313 states have call predecessors, (313), 313 states have call successors, (313) [2024-09-12 18:02:52,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3094 transitions. [2024-09-12 18:02:52,978 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3094 transitions. Word has length 121 [2024-09-12 18:02:52,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:52,978 INFO L474 AbstractCegarLoop]: Abstraction has 2187 states and 3094 transitions. [2024-09-12 18:02:52,978 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 26 states have internal predecessors, (123), 15 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 14 states have call predecessors, (27), 14 states have call successors, (27) [2024-09-12 18:02:52,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3094 transitions. [2024-09-12 18:02:52,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-09-12 18:02:52,983 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:52,983 INFO L216 NwaCegarLoop]: trace histogram [25, 24, 24, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:52,996 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 18:02:53,187 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:53,188 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:02:53,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:53,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1101642035, now seen corresponding path program 3 times [2024-09-12 18:02:53,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:53,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154239057] [2024-09-12 18:02:53,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:53,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:02:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:02:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 18:02:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 18:02:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 18:02:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 18:02:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 18:02:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 18:02:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 18:02:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 18:02:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 18:02:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 18:02:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 18:02:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 18:02:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 18:02:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 18:02:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 18:02:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 18:02:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 18:02:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 18:02:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 18:02:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 18:02:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 18:02:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 18:02:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1834 backedges. 48 proven. 682 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 18:02:53,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:53,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154239057] [2024-09-12 18:02:53,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154239057] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:53,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481947801] [2024-09-12 18:02:53,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:02:53,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:53,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:53,814 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 18:02:53,816 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 18:02:53,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-12 18:02:53,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:02:53,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:02:53,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1834 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 1669 trivial. 0 not checked. [2024-09-12 18:02:54,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:02:54,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481947801] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:02:54,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:02:54,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [25] total 30 [2024-09-12 18:02:54,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540093411] [2024-09-12 18:02:54,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:02:54,017 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 18:02:54,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:54,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 18:02:54,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2024-09-12 18:02:54,018 INFO L87 Difference]: Start difference. First operand 2187 states and 3094 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:02:54,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:54,238 INFO L93 Difference]: Finished difference Result 2193 states and 3099 transitions. [2024-09-12 18:02:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 18:02:54,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 233 [2024-09-12 18:02:54,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:54,248 INFO L225 Difference]: With dead ends: 2193 [2024-09-12 18:02:54,248 INFO L226 Difference]: Without dead ends: 2191 [2024-09-12 18:02:54,249 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2024-09-12 18:02:54,249 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 13 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:54,249 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 142 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:02:54,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2024-09-12 18:02:54,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 2191. [2024-09-12 18:02:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 1869 states have (on average 1.321562332798288) internal successors, (2470), 1869 states have internal predecessors, (2470), 314 states have call successors, (314), 8 states have call predecessors, (314), 7 states have return successors, (313), 313 states have call predecessors, (313), 313 states have call successors, (313) [2024-09-12 18:02:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 3097 transitions. [2024-09-12 18:02:54,412 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 3097 transitions. Word has length 233 [2024-09-12 18:02:54,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:54,413 INFO L474 AbstractCegarLoop]: Abstraction has 2191 states and 3097 transitions. [2024-09-12 18:02:54,413 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:02:54,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:54,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 3097 transitions. [2024-09-12 18:02:54,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-09-12 18:02:54,418 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:54,418 INFO L216 NwaCegarLoop]: trace histogram [25, 24, 24, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:54,436 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-12 18:02:54,618 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-12 18:02:54,619 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:02:54,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:54,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1606270360, now seen corresponding path program 3 times [2024-09-12 18:02:54,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:54,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303341412] [2024-09-12 18:02:54,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:54,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:02:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:02:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 18:02:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 18:02:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 18:02:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 18:02:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 18:02:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 18:02:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 18:02:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 18:02:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 18:02:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 18:02:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 18:02:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 18:02:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 18:02:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 18:02:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 18:02:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 18:02:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 18:02:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 18:02:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 18:02:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 18:02:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 18:02:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 18:02:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1856 backedges. 48 proven. 704 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 18:02:55,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:55,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303341412] [2024-09-12 18:02:55,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303341412] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:55,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769974818] [2024-09-12 18:02:55,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:02:55,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:55,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:55,295 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:02:55,306 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 18:02:55,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-12 18:02:55,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:02:55,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:02:55,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1856 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 1689 trivial. 0 not checked. [2024-09-12 18:02:55,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:02:55,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769974818] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:02:55,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:02:55,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [25] total 30 [2024-09-12 18:02:55,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519837784] [2024-09-12 18:02:55,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:02:55,438 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 18:02:55,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:55,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 18:02:55,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2024-09-12 18:02:55,439 INFO L87 Difference]: Start difference. First operand 2191 states and 3097 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:02:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:55,735 INFO L93 Difference]: Finished difference Result 2191 states and 3097 transitions. [2024-09-12 18:02:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 18:02:55,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 235 [2024-09-12 18:02:55,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:55,740 INFO L225 Difference]: With dead ends: 2191 [2024-09-12 18:02:55,740 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 18:02:55,745 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2024-09-12 18:02:55,745 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 13 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:55,745 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 154 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:02:55,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 18:02:55,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 18:02:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-12 18:02:55,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 18:02:55,748 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 235 [2024-09-12 18:02:55,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:55,748 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 18:02:55,748 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:02:55,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:55,749 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 18:02:55,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 18:02:55,751 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 5 remaining) [2024-09-12 18:02:55,751 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2024-09-12 18:02:55,751 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2024-09-12 18:02:55,751 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2024-09-12 18:02:55,751 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-09-12 18:02:55,767 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-12 18:02:55,952 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 18:02:55,955 INFO L408 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:55,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 18:03:13,599 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-12 18:03:13,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 06:03:13 BoogieIcfgContainer [2024-09-12 18:03:13,609 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-12 18:03:13,609 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-12 18:03:13,609 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-12 18:03:13,609 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-12 18:03:13,610 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:02:46" (3/4) ... [2024-09-12 18:03:13,611 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-12 18:03:13,613 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-12 18:03:13,613 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-12 18:03:13,613 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-12 18:03:13,616 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-09-12 18:03:13,616 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-12 18:03:13,616 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-12 18:03:13,616 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-12 18:03:13,681 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-12 18:03:13,681 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-12 18:03:13,683 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-12 18:03:13,683 INFO L158 Benchmark]: Toolchain (without parser) took 28043.91ms. Allocated memory was 67.1MB in the beginning and 1.4GB in the end (delta: 1.4GB). Free memory was 47.2MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 258.6MB. Max. memory is 16.1GB. [2024-09-12 18:03:13,684 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 67.1MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 18:03:13,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.44ms. Allocated memory is still 67.1MB. Free memory was 47.0MB in the beginning and 35.7MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-12 18:03:13,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 13.60ms. Allocated memory is still 67.1MB. Free memory was 35.5MB in the beginning and 34.7MB in the end (delta: 865.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 18:03:13,684 INFO L158 Benchmark]: Boogie Preprocessor took 23.78ms. Allocated memory is still 67.1MB. Free memory was 34.7MB in the beginning and 32.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 18:03:13,684 INFO L158 Benchmark]: RCFGBuilder took 361.57ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 32.9MB in the beginning and 63.1MB in the end (delta: -30.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-12 18:03:13,685 INFO L158 Benchmark]: TraceAbstraction took 27313.76ms. Allocated memory was 90.2MB in the beginning and 1.4GB in the end (delta: 1.4GB). Free memory was 62.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 872.0MB. Max. memory is 16.1GB. [2024-09-12 18:03:13,685 INFO L158 Benchmark]: Witness Printer took 73.91ms. Allocated memory is still 1.4GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-12 18:03:13,686 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 67.1MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.44ms. Allocated memory is still 67.1MB. Free memory was 47.0MB in the beginning and 35.7MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 13.60ms. Allocated memory is still 67.1MB. Free memory was 35.5MB in the beginning and 34.7MB in the end (delta: 865.5kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.78ms. Allocated memory is still 67.1MB. Free memory was 34.7MB in the beginning and 32.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 361.57ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 32.9MB in the beginning and 63.1MB in the end (delta: -30.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 27313.76ms. Allocated memory was 90.2MB in the beginning and 1.4GB in the end (delta: 1.4GB). Free memory was 62.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 872.0MB. Max. memory is 16.1GB. * Witness Printer took 73.91ms. Allocated memory is still 1.4GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 35]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 35]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 9.6s, OverallIterations: 14, TraceHistogramMax: 25, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1152 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1089 mSDsluCounter, 2931 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2406 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 686 IncrementalHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 525 mSDtfsCounter, 686 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1766 GetRequests, 1580 SyntacticMatches, 4 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2191occurred in iteration=13, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 14 MinimizatonAttempts, 23 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 2027 NumberOfCodeBlocks, 1627 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 2426 ConstructedInterpolants, 0 QuantifiedInterpolants, 4530 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1197 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 30 InterpolantComputations, 8 PerfectInterpolantSequences, 8356/10837 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((0 <= (m + 2147483648)) && (m <= 60)) && (n <= 60)) && (0 <= (n + 2147483648))) - ProcedureContractResult [Line: 15]: Procedure Contract for main Derived contract for procedure main. Ensures: 0 - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-12 18:03:13,726 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE