./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f1d7dc9d 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/loops/veris.c_NetBSD-libc_loop.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1c73403384a361e15608c077b8e86297621fa69c42f15894e841079f64af74a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-f1d7dc9-m [2024-09-20 11:57:01,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 11:57:01,777 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 11:57:01,781 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 11:57:01,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 11:57:01,802 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 11:57:01,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 11:57:01,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 11:57:01,804 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 11:57:01,804 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 11:57:01,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 11:57:01,805 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 11:57:01,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 11:57:01,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 11:57:01,806 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 11:57:01,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 11:57:01,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 11:57:01,807 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 11:57:01,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 11:57:01,808 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 11:57:01,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 11:57:01,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 11:57:01,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 11:57:01,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 11:57:01,813 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 11:57:01,813 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 11:57:01,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 11:57:01,813 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 11:57:01,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 11:57:01,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 11:57:01,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 11:57:01,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 11:57:01,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 11:57:01,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 11:57:01,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 11:57:01,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 11:57:01,819 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 11:57:01,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 11:57:01,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 11:57:01,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 11:57:01,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 11:57:01,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 11:57:01,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1c73403384a361e15608c077b8e86297621fa69c42f15894e841079f64af74a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 11:57:02,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 11:57:02,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 11:57:02,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 11:57:02,113 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 11:57:02,114 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 11:57:02,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2024-09-20 11:57:03,591 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 11:57:03,771 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 11:57:03,771 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2024-09-20 11:57:03,778 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/5a9a655ec/8cdfaa0c800d41ad907c6a806236c7a6/FLAG7a432c8a2 [2024-09-20 11:57:03,793 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/5a9a655ec/8cdfaa0c800d41ad907c6a806236c7a6 [2024-09-20 11:57:03,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 11:57:03,799 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 11:57:03,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 11:57:03,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 11:57:03,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 11:57:03,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:57:03" (1/1) ... [2024-09-20 11:57:03,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3abf58ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:03, skipping insertion in model container [2024-09-20 11:57:03,810 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:57:03" (1/1) ... [2024-09-20 11:57:03,832 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 11:57:04,002 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i[825,838] [2024-09-20 11:57:04,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 11:57:04,040 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 11:57:04,054 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i[825,838] [2024-09-20 11:57:04,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 11:57:04,090 INFO L204 MainTranslator]: Completed translation [2024-09-20 11:57:04,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:04 WrapperNode [2024-09-20 11:57:04,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 11:57:04,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 11:57:04,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 11:57:04,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 11:57:04,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:04" (1/1) ... [2024-09-20 11:57:04,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:04" (1/1) ... [2024-09-20 11:57:04,114 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 11:57:04,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 11:57:04,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 11:57:04,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 11:57:04,116 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 11:57:04,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:04" (1/1) ... [2024-09-20 11:57:04,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:04" (1/1) ... [2024-09-20 11:57:04,129 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:04" (1/1) ... [2024-09-20 11:57:04,151 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-09-20 11:57:04,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:04" (1/1) ... [2024-09-20 11:57:04,152 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:04" (1/1) ... [2024-09-20 11:57:04,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:04" (1/1) ... [2024-09-20 11:57:04,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:04" (1/1) ... [2024-09-20 11:57:04,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:04" (1/1) ... [2024-09-20 11:57:04,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:04" (1/1) ... [2024-09-20 11:57:04,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 11:57:04,165 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 11:57:04,165 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 11:57:04,165 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 11:57:04,166 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:04" (1/1) ... [2024-09-20 11:57:04,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 11:57:04,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 11:57:04,203 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) [2024-09-20 11:57:04,205 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 [2024-09-20 11:57:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 11:57:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2024-09-20 11:57:04,248 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2024-09-20 11:57:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 11:57:04,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 11:57:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 11:57:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-20 11:57:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-20 11:57:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-20 11:57:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-20 11:57:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 11:57:04,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 11:57:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 11:57:04,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 11:57:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 11:57:04,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 11:57:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-20 11:57:04,315 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 11:57:04,317 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 11:57:04,442 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-20 11:57:04,442 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 11:57:04,468 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 11:57:04,468 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 11:57:04,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:57:04 BoogieIcfgContainer [2024-09-20 11:57:04,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 11:57:04,471 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 11:57:04,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 11:57:04,475 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 11:57:04,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 11:57:03" (1/3) ... [2024-09-20 11:57:04,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258511cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:57:04, skipping insertion in model container [2024-09-20 11:57:04,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:57:04" (2/3) ... [2024-09-20 11:57:04,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258511cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:57:04, skipping insertion in model container [2024-09-20 11:57:04,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:57:04" (3/3) ... [2024-09-20 11:57:04,478 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2024-09-20 11:57:04,495 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 11:57:04,495 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 11:57:04,555 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 11:57:04,561 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;@578a862, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 11:57:04,562 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 11:57:04,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 11:57:04,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-20 11:57:04,573 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 11:57:04,573 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 11:57:04,574 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 11:57:04,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 11:57:04,579 INFO L85 PathProgramCache]: Analyzing trace with hash -953167140, now seen corresponding path program 1 times [2024-09-20 11:57:04,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 11:57:04,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612649512] [2024-09-20 11:57:04,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 11:57:04,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 11:57:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 11:57:05,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 11:57:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 11:57:05,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 11:57:05,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 11:57:05,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612649512] [2024-09-20 11:57:05,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612649512] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 11:57:05,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 11:57:05,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-20 11:57:05,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310837194] [2024-09-20 11:57:05,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 11:57:05,279 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-20 11:57:05,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 11:57:05,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-20 11:57:05,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-20 11:57:05,308 INFO L87 Difference]: Start difference. First operand has 22 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 11:57:05,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 11:57:05,543 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-09-20 11:57:05,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 11:57:05,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.0) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-20 11:57:05,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 11:57:05,552 INFO L225 Difference]: With dead ends: 44 [2024-09-20 11:57:05,553 INFO L226 Difference]: Without dead ends: 23 [2024-09-20 11:57:05,556 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-09-20 11:57:05,559 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 11:57:05,560 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 39 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 11:57:05,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-20 11:57:05,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-09-20 11:57:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 11:57:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2024-09-20 11:57:05,601 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2024-09-20 11:57:05,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 11:57:05,604 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2024-09-20 11:57:05,604 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.0) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 11:57:05,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 11:57:05,605 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2024-09-20 11:57:05,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-20 11:57:05,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 11:57:05,606 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 11:57:05,606 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 11:57:05,606 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 11:57:05,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 11:57:05,607 INFO L85 PathProgramCache]: Analyzing trace with hash -555487395, now seen corresponding path program 1 times [2024-09-20 11:57:05,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 11:57:05,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664109690] [2024-09-20 11:57:05,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 11:57:05,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 11:57:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 11:57:05,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 11:57:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 11:57:05,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-20 11:57:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 11:57:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 11:57:05,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 11:57:05,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664109690] [2024-09-20 11:57:05,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664109690] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 11:57:05,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143820490] [2024-09-20 11:57:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 11:57:05,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 11:57:05,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 11:57:05,894 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) [2024-09-20 11:57:05,897 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 11:57:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 11:57:05,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 11:57:05,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 11:57:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 11:57:06,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 11:57:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 11:57:06,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143820490] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 11:57:06,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 11:57:06,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 11 [2024-09-20 11:57:06,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902825222] [2024-09-20 11:57:06,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 11:57:06,205 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-20 11:57:06,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 11:57:06,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-20 11:57:06,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-09-20 11:57:06,207 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 11:57:06,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 11:57:06,371 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2024-09-20 11:57:06,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 11:57:06,372 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-09-20 11:57:06,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 11:57:06,373 INFO L225 Difference]: With dead ends: 32 [2024-09-20 11:57:06,373 INFO L226 Difference]: Without dead ends: 30 [2024-09-20 11:57:06,374 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-09-20 11:57:06,375 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 11:57:06,375 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 33 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 11:57:06,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-20 11:57:06,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-09-20 11:57:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 11:57:06,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2024-09-20 11:57:06,399 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2024-09-20 11:57:06,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 11:57:06,399 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2024-09-20 11:57:06,400 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 11:57:06,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 11:57:06,400 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2024-09-20 11:57:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-20 11:57:06,401 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 11:57:06,401 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 11:57:06,417 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 11:57:06,602 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 [2024-09-20 11:57:06,602 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 11:57:06,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 11:57:06,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1846538172, now seen corresponding path program 2 times [2024-09-20 11:57:06,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 11:57:06,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308586455] [2024-09-20 11:57:06,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 11:57:06,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 11:57:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 11:57:06,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 11:57:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 11:57:06,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-20 11:57:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 11:57:06,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-20 11:57:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 11:57:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-20 11:57:06,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 11:57:06,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308586455] [2024-09-20 11:57:06,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308586455] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 11:57:06,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229483459] [2024-09-20 11:57:06,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 11:57:06,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 11:57:06,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 11:57:06,820 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) [2024-09-20 11:57:06,822 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 11:57:06,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-20 11:57:06,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 11:57:06,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 11:57:06,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 11:57:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-20 11:57:07,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 11:57:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-20 11:57:07,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229483459] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 11:57:07,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 11:57:07,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2024-09-20 11:57:07,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276230237] [2024-09-20 11:57:07,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 11:57:07,132 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-20 11:57:07,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 11:57:07,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-20 11:57:07,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-09-20 11:57:07,133 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 14 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 11:57:07,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 11:57:07,300 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2024-09-20 11:57:07,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 11:57:07,301 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2024-09-20 11:57:07,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 11:57:07,302 INFO L225 Difference]: With dead ends: 29 [2024-09-20 11:57:07,302 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 11:57:07,302 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-09-20 11:57:07,303 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 11:57:07,304 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 42 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 11:57:07,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 11:57:07,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 11:57:07,305 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) [2024-09-20 11:57:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 11:57:07,305 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2024-09-20 11:57:07,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 11:57:07,305 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 11:57:07,306 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 11:57:07,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 11:57:07,306 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 11:57:07,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 11:57:07,309 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 11:57:07,327 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-20 11:57:07,513 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 [2024-09-20 11:57:07,516 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1] [2024-09-20 11:57:07,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 11:57:07,854 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 11:57:07,866 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pathlim!base [2024-09-20 11:57:07,867 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-09-20 11:57:07,868 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pathlim!offset [2024-09-20 11:57:07,868 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-09-20 11:57:07,869 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-09-20 11:57:07,869 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!base [2024-09-20 11:57:07,869 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-09-20 11:57:07,869 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!base [2024-09-20 11:57:07,870 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-09-20 11:57:07,870 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~p~0!base [2024-09-20 11:57:07,870 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!offset [2024-09-20 11:57:07,870 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-09-20 11:57:07,870 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!offset [2024-09-20 11:57:07,871 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-09-20 11:57:07,875 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-09-20 11:57:07,875 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!base [2024-09-20 11:57:07,875 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-09-20 11:57:07,875 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!base [2024-09-20 11:57:07,876 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!offset [2024-09-20 11:57:07,876 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-09-20 11:57:07,876 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!offset [2024-09-20 11:57:07,876 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-09-20 11:57:07,876 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-09-20 11:57:07,877 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!base [2024-09-20 11:57:07,877 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-09-20 11:57:07,877 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!base [2024-09-20 11:57:07,877 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!offset [2024-09-20 11:57:07,877 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-09-20 11:57:07,877 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!offset [2024-09-20 11:57:07,878 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-09-20 11:57:07,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 11:57:07 BoogieIcfgContainer [2024-09-20 11:57:07,882 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 11:57:07,883 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 11:57:07,883 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 11:57:07,883 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 11:57:07,883 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:57:04" (3/4) ... [2024-09-20 11:57:07,885 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 11:57:07,938 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 11:57:07,938 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 11:57:07,939 INFO L158 Benchmark]: Toolchain (without parser) took 4140.22ms. Allocated memory is still 174.1MB. Free memory was 118.8MB in the beginning and 129.1MB in the end (delta: -10.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 11:57:07,940 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 130.0MB. Free memory is still 104.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 11:57:07,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.73ms. Allocated memory is still 174.1MB. Free memory was 118.5MB in the beginning and 107.4MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 11:57:07,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.37ms. Allocated memory is still 174.1MB. Free memory was 107.0MB in the beginning and 106.4MB in the end (delta: 692.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 11:57:07,941 INFO L158 Benchmark]: Boogie Preprocessor took 48.84ms. Allocated memory is still 174.1MB. Free memory was 106.0MB in the beginning and 104.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 11:57:07,941 INFO L158 Benchmark]: RCFGBuilder took 304.56ms. Allocated memory is still 174.1MB. Free memory was 104.2MB in the beginning and 91.0MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 11:57:07,942 INFO L158 Benchmark]: TraceAbstraction took 3410.66ms. Allocated memory is still 174.1MB. Free memory was 90.3MB in the beginning and 131.2MB in the end (delta: -40.9MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. [2024-09-20 11:57:07,942 INFO L158 Benchmark]: Witness Printer took 55.83ms. Allocated memory is still 174.1MB. Free memory was 131.2MB in the beginning and 129.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 11:57:07,946 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 130.0MB. Free memory is still 104.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.73ms. Allocated memory is still 174.1MB. Free memory was 118.5MB in the beginning and 107.4MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.37ms. Allocated memory is still 174.1MB. Free memory was 107.0MB in the beginning and 106.4MB in the end (delta: 692.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.84ms. Allocated memory is still 174.1MB. Free memory was 106.0MB in the beginning and 104.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 304.56ms. Allocated memory is still 174.1MB. Free memory was 104.2MB in the beginning and 91.0MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3410.66ms. Allocated memory is still 174.1MB. Free memory was 90.3MB in the beginning and 131.2MB in the end (delta: -40.9MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. * Witness Printer took 55.83ms. Allocated memory is still 174.1MB. Free memory was 131.2MB in the beginning and 129.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pathlim!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pathlim!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~pathbuf!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~pathlim!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~p~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~pathlim!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~pathbuf!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~pathbuf!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~pathlim!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~pathlim!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~pathbuf!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~pathbuf!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~pathlim!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~pathlim!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~pathbuf!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!offset * 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: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 97 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 267 IncrementalHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 17 mSDtfsCounter, 267 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 95 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, InterpolantAutomatonStates: 26, 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 102 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 560 SizeOfPredicates, 12 NumberOfNonLiveVariables, 220 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 45/57 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: 29]: Loop Invariant Derived loop invariant: null - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-20 11:57:07,978 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE