./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.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-zilu/benchmark19_conjunctive.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 2dd3364bf5e5337e36d5137f60eb9fb66edcf0c750f78ddc701b6a530fbd02a5 --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 18:22:30,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 18:22:30,778 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 18:22:30,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 18:22:30,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 18:22:30,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 18:22:30,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 18:22:30,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 18:22:30,815 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 18:22:30,816 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 18:22:30,816 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 18:22:30,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 18:22:30,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 18:22:30,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 18:22:30,818 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 18:22:30,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 18:22:30,819 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 18:22:30,819 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 18:22:30,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 18:22:30,822 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 18:22:30,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 18:22:30,825 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 18:22:30,826 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 18:22:30,826 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 18:22:30,826 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 18:22:30,826 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 18:22:30,827 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 18:22:30,827 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 18:22:30,827 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 18:22:30,828 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 18:22:30,828 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 18:22:30,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 18:22:30,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:22:30,828 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 18:22:30,829 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 18:22:30,829 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 18:22:30,829 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 18:22:30,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 18:22:30,831 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 18:22:30,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 18:22:30,831 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 18:22:30,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 18:22:30,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dd3364bf5e5337e36d5137f60eb9fb66edcf0c750f78ddc701b6a530fbd02a5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 18:22:31,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 18:22:31,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 18:22:31,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 18:22:31,205 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 18:22:31,205 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 18:22:31,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i [2024-09-12 18:22:32,831 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 18:22:33,054 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 18:22:33,054 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i [2024-09-12 18:22:33,063 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3492213df/abd6fe5e71b849a8a29b0ea930698b51/FLAGd80268b7e [2024-09-12 18:22:33,429 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3492213df/abd6fe5e71b849a8a29b0ea930698b51 [2024-09-12 18:22:33,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 18:22:33,436 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 18:22:33,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 18:22:33,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 18:22:33,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 18:22:33,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:22:33" (1/1) ... [2024-09-12 18:22:33,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fec84dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33, skipping insertion in model container [2024-09-12 18:22:33,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:22:33" (1/1) ... [2024-09-12 18:22:33,469 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 18:22:33,628 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-zilu/benchmark19_conjunctive.i[873,886] [2024-09-12 18:22:33,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:22:33,660 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 18:22:33,672 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-zilu/benchmark19_conjunctive.i[873,886] [2024-09-12 18:22:33,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:22:33,694 INFO L204 MainTranslator]: Completed translation [2024-09-12 18:22:33,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33 WrapperNode [2024-09-12 18:22:33,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 18:22:33,696 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 18:22:33,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 18:22:33,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 18:22:33,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33" (1/1) ... [2024-09-12 18:22:33,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33" (1/1) ... [2024-09-12 18:22:33,716 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 18:22:33,717 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 18:22:33,718 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 18:22:33,719 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 18:22:33,719 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 18:22:33,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33" (1/1) ... [2024-09-12 18:22:33,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33" (1/1) ... [2024-09-12 18:22:33,734 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33" (1/1) ... [2024-09-12 18:22:33,755 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 18:22:33,759 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33" (1/1) ... [2024-09-12 18:22:33,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33" (1/1) ... [2024-09-12 18:22:33,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33" (1/1) ... [2024-09-12 18:22:33,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33" (1/1) ... [2024-09-12 18:22:33,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33" (1/1) ... [2024-09-12 18:22:33,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33" (1/1) ... [2024-09-12 18:22:33,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 18:22:33,779 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 18:22:33,779 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 18:22:33,779 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 18:22:33,780 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33" (1/1) ... [2024-09-12 18:22:33,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:22:33,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:22:33,817 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 18:22:33,820 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 18:22:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 18:22:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 18:22:33,873 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 18:22:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 18:22:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 18:22:33,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 18:22:33,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 18:22:33,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 18:22:33,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 18:22:33,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 18:22:33,943 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 18:22:33,946 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 18:22:34,134 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-09-12 18:22:34,136 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 18:22:34,161 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 18:22:34,162 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 18:22:34,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:22:34 BoogieIcfgContainer [2024-09-12 18:22:34,163 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 18:22:34,164 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 18:22:34,164 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 18:22:34,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 18:22:34,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 06:22:33" (1/3) ... [2024-09-12 18:22:34,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2d99b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:22:34, skipping insertion in model container [2024-09-12 18:22:34,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:22:33" (2/3) ... [2024-09-12 18:22:34,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2d99b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:22:34, skipping insertion in model container [2024-09-12 18:22:34,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:22:34" (3/3) ... [2024-09-12 18:22:34,173 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark19_conjunctive.i [2024-09-12 18:22:34,190 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 18:22:34,191 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-09-12 18:22:34,254 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 18:22:34,261 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;@57fb6898, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 18:22:34,262 INFO L337 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-09-12 18:22:34,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 15 states have (on average 1.6) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:22:34,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-12 18:22:34,273 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:34,273 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:34,274 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:22:34,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:34,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1958352589, now seen corresponding path program 1 times [2024-09-12 18:22:34,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:34,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014181465] [2024-09-12 18:22:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:34,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:34,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:34,467 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 18:22:34,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:34,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014181465] [2024-09-12 18:22:34,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014181465] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:22:34,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:22:34,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:22:34,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458664503] [2024-09-12 18:22:34,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:22:34,480 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:22:34,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:34,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:22:34,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:22:34,507 INFO L87 Difference]: Start difference. First operand has 27 states, 15 states have (on average 1.6) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:34,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:34,554 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-09-12 18:22:34,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:22:34,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2024-09-12 18:22:34,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:34,564 INFO L225 Difference]: With dead ends: 39 [2024-09-12 18:22:34,564 INFO L226 Difference]: Without dead ends: 19 [2024-09-12 18:22:34,568 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:22:34,584 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:34,588 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:22:34,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-09-12 18:22:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-09-12 18:22:34,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-09-12 18:22:34,624 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 8 [2024-09-12 18:22:34,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:34,625 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2024-09-12 18:22:34,625 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:34,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-09-12 18:22:34,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-12 18:22:34,627 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:34,627 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:34,627 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 18:22:34,627 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:22:34,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:34,628 INFO L85 PathProgramCache]: Analyzing trace with hash 579388167, now seen corresponding path program 1 times [2024-09-12 18:22:34,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:34,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961301785] [2024-09-12 18:22:34,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:34,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:34,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:34,711 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 18:22:34,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:34,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961301785] [2024-09-12 18:22:34,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961301785] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:22:34,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:22:34,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:22:34,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373518075] [2024-09-12 18:22:34,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:22:34,717 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:22:34,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:34,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:22:34,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:22:34,718 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:34,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:34,767 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2024-09-12 18:22:34,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:22:34,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-09-12 18:22:34,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:34,773 INFO L225 Difference]: With dead ends: 19 [2024-09-12 18:22:34,774 INFO L226 Difference]: Without dead ends: 18 [2024-09-12 18:22:34,775 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:22:34,778 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:34,779 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 31 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:22:34,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-12 18:22:34,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-12 18:22:34,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:34,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2024-09-12 18:22:34,786 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2024-09-12 18:22:34,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:34,786 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2024-09-12 18:22:34,787 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:34,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:34,787 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2024-09-12 18:22:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 18:22:34,788 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:34,788 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:34,788 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 18:22:34,788 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:22:34,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:34,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1554749993, now seen corresponding path program 1 times [2024-09-12 18:22:34,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:34,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229189209] [2024-09-12 18:22:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:34,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:34,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:34,897 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 18:22:34,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:34,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229189209] [2024-09-12 18:22:34,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229189209] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:22:34,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:22:34,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:22:34,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012240918] [2024-09-12 18:22:34,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:22:34,900 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:22:34,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:34,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:22:34,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:22:34,902 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 18:22:34,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:34,928 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2024-09-12 18:22:34,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:22:34,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 11 [2024-09-12 18:22:34,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:34,931 INFO L225 Difference]: With dead ends: 24 [2024-09-12 18:22:34,931 INFO L226 Difference]: Without dead ends: 19 [2024-09-12 18:22:34,932 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:22:34,933 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:34,933 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:22:34,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-09-12 18:22:34,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-09-12 18:22:34,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:34,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-09-12 18:22:34,945 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 11 [2024-09-12 18:22:34,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:34,945 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2024-09-12 18:22:34,946 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 18:22:34,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-09-12 18:22:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 18:22:34,951 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:34,951 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:34,951 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 18:22:34,951 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:22:34,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:34,952 INFO L85 PathProgramCache]: Analyzing trace with hash 781164047, now seen corresponding path program 1 times [2024-09-12 18:22:34,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:34,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666797681] [2024-09-12 18:22:34,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:34,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:35,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:35,041 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 18:22:35,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:35,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666797681] [2024-09-12 18:22:35,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666797681] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:22:35,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:22:35,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:22:35,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124973966] [2024-09-12 18:22:35,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:22:35,046 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:22:35,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:35,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:22:35,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:22:35,048 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:35,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:35,094 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2024-09-12 18:22:35,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:22:35,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-12 18:22:35,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:35,096 INFO L225 Difference]: With dead ends: 24 [2024-09-12 18:22:35,096 INFO L226 Difference]: Without dead ends: 23 [2024-09-12 18:22:35,096 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:22:35,099 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:35,099 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 36 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:22:35,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-12 18:22:35,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-09-12 18:22:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:35,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2024-09-12 18:22:35,110 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 10 [2024-09-12 18:22:35,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:35,110 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2024-09-12 18:22:35,111 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:35,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:35,111 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2024-09-12 18:22:35,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 18:22:35,112 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:35,112 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:35,112 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 18:22:35,112 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:22:35,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:35,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1553718263, now seen corresponding path program 1 times [2024-09-12 18:22:35,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:35,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350838] [2024-09-12 18:22:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:35,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:35,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:35,171 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 18:22:35,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:35,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350838] [2024-09-12 18:22:35,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350838] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:22:35,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:22:35,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:22:35,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990715885] [2024-09-12 18:22:35,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:22:35,173 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:22:35,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:35,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:22:35,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:22:35,174 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:35,193 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2024-09-12 18:22:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:22:35,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-12 18:22:35,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:35,195 INFO L225 Difference]: With dead ends: 22 [2024-09-12 18:22:35,195 INFO L226 Difference]: Without dead ends: 21 [2024-09-12 18:22:35,195 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:22:35,196 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:35,197 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 29 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:22:35,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-12 18:22:35,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-12 18:22:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2024-09-12 18:22:35,203 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 11 [2024-09-12 18:22:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:35,203 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2024-09-12 18:22:35,203 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:35,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:35,204 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2024-09-12 18:22:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 18:22:35,205 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:35,205 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:35,205 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 18:22:35,205 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 18:22:35,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:35,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1536829465, now seen corresponding path program 1 times [2024-09-12 18:22:35,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:35,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037633327] [2024-09-12 18:22:35,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:35,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:35,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:22:35,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:35,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037633327] [2024-09-12 18:22:35,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037633327] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:22:35,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387340132] [2024-09-12 18:22:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:35,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:35,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:22:35,545 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 18:22:35,547 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 18:22:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:35,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 18:22:35,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:22:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:22:35,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:22:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:22:36,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387340132] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:22:36,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:22:36,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-09-12 18:22:36,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116575633] [2024-09-12 18:22:36,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:22:36,095 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 18:22:36,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:36,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 18:22:36,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-09-12 18:22:36,099 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:36,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:36,241 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2024-09-12 18:22:36,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 18:22:36,243 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-12 18:22:36,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:36,244 INFO L225 Difference]: With dead ends: 28 [2024-09-12 18:22:36,244 INFO L226 Difference]: Without dead ends: 23 [2024-09-12 18:22:36,245 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-09-12 18:22:36,246 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:36,246 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 87 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:22:36,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-12 18:22:36,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-12 18:22:36,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:36,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2024-09-12 18:22:36,259 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2024-09-12 18:22:36,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:36,259 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2024-09-12 18:22:36,259 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:36,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:36,260 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2024-09-12 18:22:36,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 18:22:36,261 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:36,261 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:36,279 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 18:22:36,462 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 18:22:36,463 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:22:36,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:36,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1296534413, now seen corresponding path program 1 times [2024-09-12 18:22:36,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:36,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421513406] [2024-09-12 18:22:36,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:36,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:36,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:22:36,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:36,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421513406] [2024-09-12 18:22:36,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421513406] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:22:36,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496710334] [2024-09-12 18:22:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:36,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:36,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:22:36,540 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 18:22:36,542 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 18:22:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:36,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 18:22:36,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:22:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:22:36,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:22:36,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:22:36,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496710334] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:22:36,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:22:36,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 14 [2024-09-12 18:22:36,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841769282] [2024-09-12 18:22:36,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:22:36,782 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 18:22:36,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:36,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 18:22:36,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-09-12 18:22:36,784 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 15 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:36,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:36,874 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2024-09-12 18:22:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 18:22:36,875 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 15 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-09-12 18:22:36,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:36,877 INFO L225 Difference]: With dead ends: 23 [2024-09-12 18:22:36,878 INFO L226 Difference]: Without dead ends: 22 [2024-09-12 18:22:36,879 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-09-12 18:22:36,879 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:36,880 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 69 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:22:36,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-12 18:22:36,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-12 18:22:36,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:36,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2024-09-12 18:22:36,886 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2024-09-12 18:22:36,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:36,886 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2024-09-12 18:22:36,887 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 15 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:36,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2024-09-12 18:22:36,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 18:22:36,888 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:36,888 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:36,908 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-12 18:22:37,092 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 18:22:37,093 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 18:22:37,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:37,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2093121769, now seen corresponding path program 2 times [2024-09-12 18:22:37,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:37,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108216072] [2024-09-12 18:22:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:37,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:37,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:22:37,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:37,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108216072] [2024-09-12 18:22:37,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108216072] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:22:37,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597425951] [2024-09-12 18:22:37,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:22:37,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:37,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:22:37,364 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 18:22:37,366 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 18:22:37,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:22:37,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:22:37,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 18:22:37,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:22:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:22:37,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:22:38,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:22:38,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597425951] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:22:38,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:22:38,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 27 [2024-09-12 18:22:38,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91780637] [2024-09-12 18:22:38,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:22:38,057 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 18:22:38,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:38,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 18:22:38,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2024-09-12 18:22:38,061 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 27 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 25 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:38,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:38,314 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2024-09-12 18:22:38,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 18:22:38,315 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 25 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-09-12 18:22:38,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:38,316 INFO L225 Difference]: With dead ends: 27 [2024-09-12 18:22:38,316 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 18:22:38,316 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 18:22:38,317 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:38,318 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 71 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:22:38,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 18:22:38,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 18:22:38,318 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 18:22:38,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 18:22:38,319 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2024-09-12 18:22:38,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:38,319 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 18:22:38,319 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 25 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:38,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:38,320 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 18:22:38,320 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 18:22:38,322 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 5 remaining) [2024-09-12 18:22:38,323 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2024-09-12 18:22:38,323 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2024-09-12 18:22:38,323 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2024-09-12 18:22:38,324 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-09-12 18:22:38,341 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 18:22:38,527 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-12 18:22:38,531 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:38,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 18:22:38,713 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-12 18:22:38,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 06:22:38 BoogieIcfgContainer [2024-09-12 18:22:38,729 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-12 18:22:38,729 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-12 18:22:38,729 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-12 18:22:38,730 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-12 18:22:38,730 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:22:34" (3/4) ... [2024-09-12 18:22:38,733 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-12 18:22:38,737 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-12 18:22:38,737 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-12 18:22:38,737 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-12 18:22:38,742 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-09-12 18:22:38,742 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-12 18:22:38,743 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-09-12 18:22:38,743 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-12 18:22:38,841 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-12 18:22:38,841 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-12 18:22:38,842 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-12 18:22:38,842 INFO L158 Benchmark]: Toolchain (without parser) took 5406.66ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 33.5MB in the beginning and 76.9MB in the end (delta: -43.4MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2024-09-12 18:22:38,842 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory was 30.9MB in the beginning and 30.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 18:22:38,843 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.92ms. Allocated memory is still 69.2MB. Free memory was 33.5MB in the beginning and 42.0MB in the end (delta: -8.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-12 18:22:38,843 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.13ms. Allocated memory is still 69.2MB. Free memory was 42.0MB in the beginning and 41.1MB in the end (delta: 887.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 18:22:38,843 INFO L158 Benchmark]: Boogie Preprocessor took 60.09ms. Allocated memory is still 69.2MB. Free memory was 41.1MB in the beginning and 39.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 18:22:38,844 INFO L158 Benchmark]: RCFGBuilder took 383.57ms. Allocated memory is still 69.2MB. Free memory was 39.3MB in the beginning and 46.8MB in the end (delta: -7.5MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2024-09-12 18:22:38,844 INFO L158 Benchmark]: TraceAbstraction took 4564.63ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 46.3MB in the beginning and 34.9MB in the end (delta: 11.5MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2024-09-12 18:22:38,845 INFO L158 Benchmark]: Witness Printer took 112.19ms. Allocated memory is still 100.7MB. Free memory was 34.9MB in the beginning and 76.9MB in the end (delta: -42.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-12 18:22:38,846 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory was 30.9MB in the beginning and 30.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.92ms. Allocated memory is still 69.2MB. Free memory was 33.5MB in the beginning and 42.0MB in the end (delta: -8.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.13ms. Allocated memory is still 69.2MB. Free memory was 42.0MB in the beginning and 41.1MB in the end (delta: 887.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.09ms. Allocated memory is still 69.2MB. Free memory was 41.1MB in the beginning and 39.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 383.57ms. Allocated memory is still 69.2MB. Free memory was 39.3MB in the beginning and 46.8MB in the end (delta: -7.5MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4564.63ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 46.3MB in the beginning and 34.9MB in the end (delta: 11.5MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. * Witness Printer took 112.19ms. Allocated memory is still 100.7MB. Free memory was 34.9MB in the beginning and 76.9MB in the end (delta: -42.0MB). 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: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: 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, 27 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 396 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 297 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 457 IncrementalHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 99 mSDtfsCounter, 457 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 903 SizeOfPredicates, 9 NumberOfNonLiveVariables, 192 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 2/36 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: 24]: Loop Invariant Derived loop invariant: ((((1 <= n) && (0 <= k)) && (k == j)) && (k <= 2147483647)) - ProcedureContractResult [Line: 14]: 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 18:22:38,880 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE