./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 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/nla-digbench-scaling/lcm2_valuebound1.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 75b979445b16a7d0cbf48464bf7b748fed9f6cd2ca88a888f2b108d83230a494 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 09:39:52,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 09:39:52,468 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 09:39:52,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 09:39:52,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 09:39:52,494 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 09:39:52,495 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 09:39:52,495 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 09:39:52,496 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 09:39:52,497 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 09:39:52,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 09:39:52,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 09:39:52,498 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 09:39:52,498 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 09:39:52,500 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 09:39:52,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 09:39:52,500 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 09:39:52,500 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 09:39:52,501 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 09:39:52,501 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 09:39:52,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 09:39:52,502 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 09:39:52,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 09:39:52,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 09:39:52,502 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 09:39:52,503 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 09:39:52,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 09:39:52,503 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 09:39:52,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 09:39:52,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 09:39:52,504 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 09:39:52,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 09:39:52,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:39:52,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 09:39:52,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 09:39:52,505 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 09:39:52,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 09:39:52,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 09:39:52,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 09:39:52,506 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 09:39:52,506 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 09:39:52,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 09:39:52,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b979445b16a7d0cbf48464bf7b748fed9f6cd2ca88a888f2b108d83230a494 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 09:39:52,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 09:39:52,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 09:39:52,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 09:39:52,724 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 09:39:52,724 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 09:39:52,725 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c [2024-09-13 09:39:54,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 09:39:54,171 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 09:39:54,171 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c [2024-09-13 09:39:54,177 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/354682887/4212f6fe23914b54a55f190bddba9a04/FLAG115dcc261 [2024-09-13 09:39:54,586 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/354682887/4212f6fe23914b54a55f190bddba9a04 [2024-09-13 09:39:54,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 09:39:54,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 09:39:54,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 09:39:54,590 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 09:39:54,594 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 09:39:54,595 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:39:54" (1/1) ... [2024-09-13 09:39:54,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100b271a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54, skipping insertion in model container [2024-09-13 09:39:54,596 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:39:54" (1/1) ... [2024-09-13 09:39:54,610 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 09:39:54,722 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/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2024-09-13 09:39:54,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:39:54,751 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 09:39:54,762 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/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2024-09-13 09:39:54,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:39:54,787 INFO L204 MainTranslator]: Completed translation [2024-09-13 09:39:54,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54 WrapperNode [2024-09-13 09:39:54,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 09:39:54,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 09:39:54,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 09:39:54,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 09:39:54,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54" (1/1) ... [2024-09-13 09:39:54,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54" (1/1) ... [2024-09-13 09:39:54,805 INFO L138 Inliner]: procedures = 14, calls = 22, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 09:39:54,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 09:39:54,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 09:39:54,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 09:39:54,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 09:39:54,819 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54" (1/1) ... [2024-09-13 09:39:54,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54" (1/1) ... [2024-09-13 09:39:54,821 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54" (1/1) ... [2024-09-13 09:39:54,831 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2024-09-13 09:39:54,831 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54" (1/1) ... [2024-09-13 09:39:54,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54" (1/1) ... [2024-09-13 09:39:54,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54" (1/1) ... [2024-09-13 09:39:54,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54" (1/1) ... [2024-09-13 09:39:54,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54" (1/1) ... [2024-09-13 09:39:54,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54" (1/1) ... [2024-09-13 09:39:54,838 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 09:39:54,842 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 09:39:54,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 09:39:54,843 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 09:39:54,843 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54" (1/1) ... [2024-09-13 09:39:54,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:39:54,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:39:54,884 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) [2024-09-13 09:39:54,892 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 [2024-09-13 09:39:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 09:39:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 09:39:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 09:39:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 09:39:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 09:39:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 09:39:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-13 09:39:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 09:39:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 09:39:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 09:39:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 09:39:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 09:39:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 09:39:54,983 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 09:39:54,985 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 09:39:55,131 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-13 09:39:55,132 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 09:39:55,159 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 09:39:55,159 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 09:39:55,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:39:55 BoogieIcfgContainer [2024-09-13 09:39:55,160 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 09:39:55,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 09:39:55,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 09:39:55,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 09:39:55,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 09:39:54" (1/3) ... [2024-09-13 09:39:55,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29896460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:39:55, skipping insertion in model container [2024-09-13 09:39:55,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:39:54" (2/3) ... [2024-09-13 09:39:55,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29896460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:39:55, skipping insertion in model container [2024-09-13 09:39:55,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:39:55" (3/3) ... [2024-09-13 09:39:55,168 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound1.c [2024-09-13 09:39:55,181 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 09:39:55,181 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 09:39:55,266 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 09:39:55,271 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;@426fc3c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 09:39:55,271 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 09:39:55,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 09:39:55,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-13 09:39:55,281 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:39:55,282 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:39:55,283 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:39:55,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:39:55,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1663284642, now seen corresponding path program 1 times [2024-09-13 09:39:55,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:39:55,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766050428] [2024-09-13 09:39:55,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:39:55,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:39:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:55,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:39:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:55,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:39:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:55,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 09:39:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:55,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 09:39:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:55,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 09:39:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:55,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-13 09:39:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:55,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-13 09:39:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 09:39:55,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:39:55,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766050428] [2024-09-13 09:39:55,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766050428] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:39:55,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:39:55,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 09:39:55,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961490882] [2024-09-13 09:39:55,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:39:55,541 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 09:39:55,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:39:55,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 09:39:55,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 09:39:55,564 INFO L87 Difference]: Start difference. First operand has 32 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-13 09:39:55,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:39:55,585 INFO L93 Difference]: Finished difference Result 58 states and 87 transitions. [2024-09-13 09:39:55,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 09:39:55,587 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2024-09-13 09:39:55,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:39:55,592 INFO L225 Difference]: With dead ends: 58 [2024-09-13 09:39:55,592 INFO L226 Difference]: Without dead ends: 28 [2024-09-13 09:39:55,594 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 09:39:55,597 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 09:39:55,597 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:39:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-13 09:39:55,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-13 09:39:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 09:39:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-09-13 09:39:55,637 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 42 [2024-09-13 09:39:55,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:39:55,638 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-09-13 09:39:55,638 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-13 09:39:55,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:39:55,639 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-09-13 09:39:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-13 09:39:55,640 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:39:55,640 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:39:55,640 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 09:39:55,640 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:39:55,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:39:55,641 INFO L85 PathProgramCache]: Analyzing trace with hash 53253866, now seen corresponding path program 1 times [2024-09-13 09:39:55,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:39:55,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948371616] [2024-09-13 09:39:55,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:39:55,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:39:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 09:39:55,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308284022] [2024-09-13 09:39:55,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:39:55,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:39:55,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:39:55,684 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) [2024-09-13 09:39:55,685 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 09:39:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:55,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-13 09:39:55,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:39:55,962 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 09:39:55,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 09:39:55,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:39:55,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948371616] [2024-09-13 09:39:55,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 09:39:55,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308284022] [2024-09-13 09:39:55,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308284022] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:39:55,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:39:55,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 09:39:55,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749108918] [2024-09-13 09:39:55,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:39:55,965 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 09:39:55,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:39:55,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 09:39:55,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 09:39:55,966 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-13 09:39:56,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:39:56,044 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2024-09-13 09:39:56,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 09:39:56,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 42 [2024-09-13 09:39:56,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:39:56,046 INFO L225 Difference]: With dead ends: 39 [2024-09-13 09:39:56,047 INFO L226 Difference]: Without dead ends: 36 [2024-09-13 09:39:56,047 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 09:39:56,048 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:39:56,048 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:39:56,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-13 09:39:56,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2024-09-13 09:39:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 09:39:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2024-09-13 09:39:56,059 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 42 [2024-09-13 09:39:56,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:39:56,060 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2024-09-13 09:39:56,060 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-13 09:39:56,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:39:56,062 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2024-09-13 09:39:56,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-13 09:39:56,064 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:39:56,064 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:39:56,072 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 09:39:56,265 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 [2024-09-13 09:39:56,266 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:39:56,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:39:56,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1425755583, now seen corresponding path program 1 times [2024-09-13 09:39:56,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:39:56,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125201375] [2024-09-13 09:39:56,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:39:56,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:39:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:56,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:39:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:56,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:39:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:56,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 09:39:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:56,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 09:39:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:56,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 09:39:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:56,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-13 09:39:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:56,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-13 09:39:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:56,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 09:39:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-13 09:39:56,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:39:56,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125201375] [2024-09-13 09:39:56,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125201375] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:39:56,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951978836] [2024-09-13 09:39:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:39:56,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:39:56,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:39:56,989 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) [2024-09-13 09:39:56,990 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 09:39:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:39:57,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-13 09:39:57,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:39:57,379 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-13 09:39:57,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:39:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-13 09:39:57,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951978836] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:39:57,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:39:57,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 16 [2024-09-13 09:39:57,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543559889] [2024-09-13 09:39:57,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:39:57,729 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-13 09:39:57,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:39:57,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-13 09:39:57,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-09-13 09:39:57,731 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 16 states, 12 states have (on average 2.5) internal successors, (30), 9 states have internal predecessors, (30), 12 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-13 09:39:57,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:39:57,872 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2024-09-13 09:39:57,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 09:39:57,873 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.5) internal successors, (30), 9 states have internal predecessors, (30), 12 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) Word has length 50 [2024-09-13 09:39:57,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:39:57,873 INFO L225 Difference]: With dead ends: 37 [2024-09-13 09:39:57,873 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 09:39:57,874 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 109 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-09-13 09:39:57,875 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:39:57,875 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 145 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:39:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 09:39:57,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 09:39:57,876 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) [2024-09-13 09:39:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 09:39:57,876 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2024-09-13 09:39:57,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:39:57,876 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 09:39:57,876 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.5) internal successors, (30), 9 states have internal predecessors, (30), 12 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-13 09:39:57,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:39:57,877 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 09:39:57,877 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 09:39:57,879 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 09:39:57,896 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 09:39:58,083 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 [2024-09-13 09:39:58,086 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-09-13 09:39:58,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 09:39:58,244 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 09:39:58,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 09:39:58 BoogieIcfgContainer [2024-09-13 09:39:58,255 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 09:39:58,255 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 09:39:58,255 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 09:39:58,255 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 09:39:58,256 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:39:55" (3/4) ... [2024-09-13 09:39:58,257 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 09:39:58,259 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 09:39:58,259 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-13 09:39:58,259 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 09:39:58,260 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-13 09:39:58,262 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-09-13 09:39:58,262 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-09-13 09:39:58,262 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-13 09:39:58,262 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 09:39:58,262 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 09:39:58,337 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 09:39:58,337 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 09:39:58,337 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 09:39:58,338 INFO L158 Benchmark]: Toolchain (without parser) took 3748.47ms. Allocated memory was 165.7MB in the beginning and 245.4MB in the end (delta: 79.7MB). Free memory was 91.6MB in the beginning and 72.9MB in the end (delta: 18.7MB). Peak memory consumption was 97.7MB. Max. memory is 16.1GB. [2024-09-13 09:39:58,338 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 165.7MB. Free memory is still 116.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:39:58,338 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.25ms. Allocated memory is still 165.7MB. Free memory was 91.3MB in the beginning and 79.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-13 09:39:58,338 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.80ms. Allocated memory is still 165.7MB. Free memory was 79.5MB in the beginning and 78.7MB in the end (delta: 794.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 09:39:58,338 INFO L158 Benchmark]: Boogie Preprocessor took 32.22ms. Allocated memory is still 165.7MB. Free memory was 78.7MB in the beginning and 76.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 09:39:58,338 INFO L158 Benchmark]: RCFGBuilder took 317.75ms. Allocated memory is still 165.7MB. Free memory was 76.9MB in the beginning and 63.3MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 09:39:58,339 INFO L158 Benchmark]: TraceAbstraction took 3092.33ms. Allocated memory was 165.7MB in the beginning and 245.4MB in the end (delta: 79.7MB). Free memory was 62.7MB in the beginning and 77.1MB in the end (delta: -14.4MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. [2024-09-13 09:39:58,339 INFO L158 Benchmark]: Witness Printer took 82.14ms. Allocated memory is still 245.4MB. Free memory was 77.1MB in the beginning and 72.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 09:39:58,340 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 165.7MB. Free memory is still 116.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.25ms. Allocated memory is still 165.7MB. Free memory was 91.3MB in the beginning and 79.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.80ms. Allocated memory is still 165.7MB. Free memory was 79.5MB in the beginning and 78.7MB in the end (delta: 794.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.22ms. Allocated memory is still 165.7MB. Free memory was 78.7MB in the beginning and 76.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 317.75ms. Allocated memory is still 165.7MB. Free memory was 76.9MB in the beginning and 63.3MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3092.33ms. Allocated memory was 165.7MB in the beginning and 245.4MB in the end (delta: 79.7MB). Free memory was 62.7MB in the beginning and 77.1MB in the end (delta: -14.4MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. * Witness Printer took 82.14ms. Allocated memory is still 245.4MB. Free memory was 77.1MB in the beginning and 72.9MB 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: 14]: 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 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 286 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 203 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 147 IncrementalHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 83 mSDtfsCounter, 147 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 169 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 971 SizeOfPredicates, 12 NumberOfNonLiveVariables, 248 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 264/312 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 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((a == v) && (1 <= (a % 4294967296))) && (b == y)) && ((x + ((b / 4294967296) * 4294967296)) <= (y + ((a / 4294967296) * 4294967296)))) && (b == u)) && (y <= (((y / 4294967296) * 4294967296) + 1))) && (a == x)) - ProcedureContractResult [Line: 8]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 11]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) == 1) Ensures: (\old(cond) == 1) RESULT: Ultimate proved your program to be correct! [2024-09-13 09:39:58,375 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