./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-simple/nested_1.c --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-simple/nested_1.c -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 5dbc8f54f9c446babb02937902a9e0651922ee3ad3469ce820281714b321626f --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 18:21:33,052 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 18:21:33,134 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 18:21:33,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 18:21:33,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 18:21:33,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 18:21:33,184 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 18:21:33,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 18:21:33,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 18:21:33,186 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 18:21:33,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 18:21:33,190 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 18:21:33,191 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 18:21:33,191 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 18:21:33,192 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 18:21:33,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 18:21:33,192 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 18:21:33,193 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 18:21:33,193 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 18:21:33,193 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 18:21:33,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 18:21:33,197 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 18:21:33,198 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 18:21:33,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 18:21:33,198 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 18:21:33,199 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 18:21:33,199 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 18:21:33,199 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 18:21:33,199 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 18:21:33,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 18:21:33,200 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 18:21:33,200 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 18:21:33,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:21:33,201 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 18:21:33,201 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 18:21:33,201 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 18:21:33,201 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 18:21:33,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 18:21:33,202 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 18:21:33,202 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 18:21:33,202 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 18:21:33,204 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 18:21:33,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dbc8f54f9c446babb02937902a9e0651922ee3ad3469ce820281714b321626f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 18:21:33,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 18:21:33,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 18:21:33,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 18:21:33,595 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 18:21:33,596 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 18:21:33,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-simple/nested_1.c [2024-09-12 18:21:35,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 18:21:35,442 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 18:21:35,443 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-simple/nested_1.c [2024-09-12 18:21:35,455 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/0ddc2ff84/323882f0c1ac43eaaf84f905165e24c5/FLAG11852ccbb [2024-09-12 18:21:35,475 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/0ddc2ff84/323882f0c1ac43eaaf84f905165e24c5 [2024-09-12 18:21:35,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 18:21:35,480 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 18:21:35,482 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 18:21:35,482 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 18:21:35,489 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 18:21:35,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:21:35" (1/1) ... [2024-09-12 18:21:35,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6773433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35, skipping insertion in model container [2024-09-12 18:21:35,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:21:35" (1/1) ... [2024-09-12 18:21:35,514 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 18:21:35,711 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-simple/nested_1.c[676,689] [2024-09-12 18:21:35,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:21:35,734 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 18:21:35,748 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-simple/nested_1.c[676,689] [2024-09-12 18:21:35,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:21:35,767 INFO L204 MainTranslator]: Completed translation [2024-09-12 18:21:35,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35 WrapperNode [2024-09-12 18:21:35,768 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 18:21:35,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 18:21:35,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 18:21:35,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 18:21:35,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35" (1/1) ... [2024-09-12 18:21:35,784 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35" (1/1) ... [2024-09-12 18:21:35,792 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 18:21:35,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 18:21:35,793 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 18:21:35,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 18:21:35,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 18:21:35,804 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35" (1/1) ... [2024-09-12 18:21:35,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35" (1/1) ... [2024-09-12 18:21:35,806 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35" (1/1) ... [2024-09-12 18:21:35,819 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 18:21:35,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35" (1/1) ... [2024-09-12 18:21:35,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35" (1/1) ... [2024-09-12 18:21:35,822 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35" (1/1) ... [2024-09-12 18:21:35,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35" (1/1) ... [2024-09-12 18:21:35,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35" (1/1) ... [2024-09-12 18:21:35,832 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35" (1/1) ... [2024-09-12 18:21:35,834 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 18:21:35,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 18:21:35,837 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 18:21:35,837 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 18:21:35,838 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35" (1/1) ... [2024-09-12 18:21:35,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:21:35,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:35,879 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 18:21:35,882 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 18:21:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 18:21:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 18:21:35,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 18:21:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 18:21:35,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 18:21:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 18:21:35,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 18:21:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 18:21:35,996 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 18:21:35,998 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 18:21:36,137 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-12 18:21:36,138 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 18:21:36,165 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 18:21:36,165 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 18:21:36,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:21:36 BoogieIcfgContainer [2024-09-12 18:21:36,167 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 18:21:36,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 18:21:36,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 18:21:36,179 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 18:21:36,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 06:21:35" (1/3) ... [2024-09-12 18:21:36,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abd8a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:21:36, skipping insertion in model container [2024-09-12 18:21:36,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:21:35" (2/3) ... [2024-09-12 18:21:36,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abd8a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:21:36, skipping insertion in model container [2024-09-12 18:21:36,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:21:36" (3/3) ... [2024-09-12 18:21:36,185 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_1.c [2024-09-12 18:21:36,202 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 18:21:36,202 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-09-12 18:21:36,270 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 18:21:36,280 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;@271297ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 18:21:36,282 INFO L337 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-09-12 18:21:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:21:36,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-12 18:21:36,294 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:36,295 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:21:36,296 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 18:21:36,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:36,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1140300801, now seen corresponding path program 1 times [2024-09-12 18:21:36,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:36,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596637396] [2024-09-12 18:21:36,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:36,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:36,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:36,504 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 18:21:36,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596637396] [2024-09-12 18:21:36,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596637396] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:21:36,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:21:36,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:21:36,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480212013] [2024-09-12 18:21:36,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:21:36,521 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:21:36,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:36,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:21:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:21:36,554 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:21:36,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:36,620 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-09-12 18:21:36,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:21:36,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2024-09-12 18:21:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:36,636 INFO L225 Difference]: With dead ends: 29 [2024-09-12 18:21:36,637 INFO L226 Difference]: Without dead ends: 16 [2024-09-12 18:21:36,641 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 18:21:36,647 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:36,648 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:21:36,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-12 18:21:36,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-12 18:21:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:21:36,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2024-09-12 18:21:36,702 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2024-09-12 18:21:36,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:36,704 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2024-09-12 18:21:36,704 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:21:36,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-09-12 18:21:36,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 18:21:36,706 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:36,706 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:21:36,707 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 18:21:36,707 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 18:21:36,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:36,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1804866034, now seen corresponding path program 1 times [2024-09-12 18:21:36,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:36,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997664898] [2024-09-12 18:21:36,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:36,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:36,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:21:36,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:36,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997664898] [2024-09-12 18:21:36,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997664898] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:36,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670531056] [2024-09-12 18:21:36,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:36,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:36,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:36,846 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 18:21:36,856 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 18:21:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:36,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:21:36,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:21:36,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:21:36,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670531056] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:21:36,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:21:36,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-09-12 18:21:36,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099114388] [2024-09-12 18:21:36,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:21:36,977 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:21:36,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:36,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:21:36,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:21:36,979 INFO L87 Difference]: Start difference. First operand 16 states and 16 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 18:21:37,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:37,028 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2024-09-12 18:21:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:21:37,029 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 18:21:37,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:37,030 INFO L225 Difference]: With dead ends: 16 [2024-09-12 18:21:37,031 INFO L226 Difference]: Without dead ends: 15 [2024-09-12 18:21:37,031 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:21:37,032 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:37,034 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 9 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:21:37,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-09-12 18:21:37,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-09-12 18:21:37,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:21:37,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-09-12 18:21:37,043 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2024-09-12 18:21:37,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:37,044 INFO L474 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-09-12 18:21:37,044 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 18:21:37,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:37,048 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-09-12 18:21:37,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 18:21:37,049 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:37,049 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:21:37,070 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-12 18:21:37,249 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:37,250 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 18:21:37,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:37,251 INFO L85 PathProgramCache]: Analyzing trace with hash 116270588, now seen corresponding path program 1 times [2024-09-12 18:21:37,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:37,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16231184] [2024-09-12 18:21:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:37,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:37,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:37,342 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 18:21:37,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:37,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16231184] [2024-09-12 18:21:37,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16231184] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:37,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421067897] [2024-09-12 18:21:37,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:37,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:37,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:37,346 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 18:21:37,348 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 18:21:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:37,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:21:37,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:37,420 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 18:21:37,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:37,464 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 18:21:37,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421067897] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:37,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:37,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-12 18:21:37,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819882555] [2024-09-12 18:21:37,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:37,466 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 18:21:37,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:37,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 18:21:37,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:21:37,467 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 18:21:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:37,529 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-09-12 18:21:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:21:37,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 18:21:37,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:37,530 INFO L225 Difference]: With dead ends: 25 [2024-09-12 18:21:37,530 INFO L226 Difference]: Without dead ends: 21 [2024-09-12 18:21:37,532 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:21:37,533 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:37,539 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 27 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:21:37,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-12 18:21:37,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-12 18:21:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:21:37,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2024-09-12 18:21:37,546 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 11 [2024-09-12 18:21:37,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:37,547 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2024-09-12 18:21:37,547 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 18:21:37,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:37,547 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2024-09-12 18:21:37,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 18:21:37,548 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:37,548 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:21:37,563 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 18:21:37,748 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:37,749 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 18:21:37,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:37,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1987583731, now seen corresponding path program 2 times [2024-09-12 18:21:37,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:37,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657726033] [2024-09-12 18:21:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:37,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:37,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:37,837 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 18:21:37,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:37,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657726033] [2024-09-12 18:21:37,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657726033] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:21:37,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:21:37,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 18:21:37,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076182877] [2024-09-12 18:21:37,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:21:37,839 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:21:37,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:37,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:21:37,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:21:37,841 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:21:37,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:37,859 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2024-09-12 18:21:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:21:37,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-09-12 18:21:37,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:37,860 INFO L225 Difference]: With dead ends: 21 [2024-09-12 18:21:37,860 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 18:21:37,861 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:21:37,862 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 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 18:21:37,862 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:21:37,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 18:21:37,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 18:21:37,863 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 18:21:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 18:21:37,864 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2024-09-12 18:21:37,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:37,864 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 18:21:37,864 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:21:37,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:37,865 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 18:21:37,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 18:21:37,872 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 3 remaining) [2024-09-12 18:21:37,873 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 3 remaining) [2024-09-12 18:21:37,873 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-09-12 18:21:37,873 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 18:21:37,878 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-09-12 18:21:37,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 18:21:37,994 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-12 18:21:38,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 06:21:38 BoogieIcfgContainer [2024-09-12 18:21:38,008 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-12 18:21:38,009 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-12 18:21:38,009 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-12 18:21:38,009 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-12 18:21:38,010 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:21:36" (3/4) ... [2024-09-12 18:21:38,012 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-12 18:21:38,015 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-12 18:21:38,016 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-12 18:21:38,019 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-09-12 18:21:38,019 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-12 18:21:38,019 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-12 18:21:38,019 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-12 18:21:38,108 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-12 18:21:38,109 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-12 18:21:38,109 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-12 18:21:38,110 INFO L158 Benchmark]: Toolchain (without parser) took 2629.32ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 35.7MB in the beginning and 37.5MB in the end (delta: -1.8MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2024-09-12 18:21:38,110 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory is still 23.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 18:21:38,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.95ms. Allocated memory is still 67.1MB. Free memory was 35.5MB in the beginning and 42.4MB in the end (delta: -6.8MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2024-09-12 18:21:38,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.74ms. Allocated memory is still 67.1MB. Free memory was 42.4MB in the beginning and 41.5MB in the end (delta: 904.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 18:21:38,113 INFO L158 Benchmark]: Boogie Preprocessor took 40.74ms. Allocated memory is still 67.1MB. Free memory was 41.5MB in the beginning and 39.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 18:21:38,113 INFO L158 Benchmark]: RCFGBuilder took 330.36ms. Allocated memory is still 67.1MB. Free memory was 39.8MB in the beginning and 29.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-12 18:21:38,115 INFO L158 Benchmark]: TraceAbstraction took 1832.75ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 46.3MB in the beginning and 41.7MB in the end (delta: 4.6MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2024-09-12 18:21:38,115 INFO L158 Benchmark]: Witness Printer took 99.77ms. Allocated memory is still 81.8MB. Free memory was 41.7MB in the beginning and 37.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-12 18:21:38,120 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 is still 23.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.95ms. Allocated memory is still 67.1MB. Free memory was 35.5MB in the beginning and 42.4MB in the end (delta: -6.8MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.74ms. Allocated memory is still 67.1MB. Free memory was 42.4MB in the beginning and 41.5MB in the end (delta: 904.5kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.74ms. Allocated memory is still 67.1MB. Free memory was 41.5MB in the beginning and 39.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 330.36ms. Allocated memory is still 67.1MB. Free memory was 39.8MB in the beginning and 29.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1832.75ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 46.3MB in the beginning and 41.7MB in the end (delta: 4.6MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * Witness Printer took 99.77ms. Allocated memory is still 81.8MB. Free memory was 41.7MB in the beginning and 37.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: 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 3 procedures, 17 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 67 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 77 IncrementalHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 28 mSDtfsCounter, 77 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=3, InterpolantAutomatonStates: 18, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 129 SizeOfPredicates, 0 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 24/29 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 3 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((a == 0) || ((1 <= a) && (a <= 6))) RESULT: Ultimate proved your program to be correct! [2024-09-12 18:21:38,151 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE