./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 e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 14:12:25,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 14:12:25,964 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 14:12:25,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 14:12:25,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 14:12:26,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 14:12:26,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 14:12:26,005 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 14:12:26,006 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 14:12:26,006 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 14:12:26,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 14:12:26,007 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 14:12:26,008 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 14:12:26,008 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 14:12:26,009 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 14:12:26,011 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 14:12:26,011 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 14:12:26,012 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 14:12:26,012 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 14:12:26,012 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 14:12:26,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 14:12:26,014 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 14:12:26,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 14:12:26,015 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 14:12:26,015 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 14:12:26,016 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 14:12:26,016 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 14:12:26,016 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 14:12:26,017 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 14:12:26,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 14:12:26,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 14:12:26,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 14:12:26,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:12:26,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 14:12:26,019 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 14:12:26,019 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 14:12:26,020 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 14:12:26,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 14:12:26,020 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 14:12:26,021 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 14:12:26,021 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 14:12:26,021 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 14:12:26,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1c73403384a361e15608c077b8e86297621fa69c42f15894e841079f64af74a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 14:12:26,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 14:12:26,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 14:12:26,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 14:12:26,330 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 14:12:26,331 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 14:12:26,332 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2024-10-15 14:12:27,832 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 14:12:28,017 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 14:12:28,018 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2024-10-15 14:12:28,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/843954668/8442da0c2dfa42939c8237d609bb941b/FLAG2b5f540fa [2024-10-15 14:12:28,398 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/843954668/8442da0c2dfa42939c8237d609bb941b [2024-10-15 14:12:28,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 14:12:28,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 14:12:28,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 14:12:28,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 14:12:28,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 14:12:28,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:12:28" (1/1) ... [2024-10-15 14:12:28,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76529d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28, skipping insertion in model container [2024-10-15 14:12:28,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:12:28" (1/1) ... [2024-10-15 14:12:28,436 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 14:12:28,593 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] [2024-10-15 14:12:28,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:12:28,618 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 14:12:28,628 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] [2024-10-15 14:12:28,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:12:28,654 INFO L204 MainTranslator]: Completed translation [2024-10-15 14:12:28,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28 WrapperNode [2024-10-15 14:12:28,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 14:12:28,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 14:12:28,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 14:12:28,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 14:12:28,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28" (1/1) ... [2024-10-15 14:12:28,670 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28" (1/1) ... [2024-10-15 14:12:28,676 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 14:12:28,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 14:12:28,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 14:12:28,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 14:12:28,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 14:12:28,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28" (1/1) ... [2024-10-15 14:12:28,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28" (1/1) ... [2024-10-15 14:12:28,687 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28" (1/1) ... [2024-10-15 14:12:28,701 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]. [2024-10-15 14:12:28,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28" (1/1) ... [2024-10-15 14:12:28,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28" (1/1) ... [2024-10-15 14:12:28,707 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28" (1/1) ... [2024-10-15 14:12:28,709 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28" (1/1) ... [2024-10-15 14:12:28,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28" (1/1) ... [2024-10-15 14:12:28,710 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28" (1/1) ... [2024-10-15 14:12:28,712 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 14:12:28,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 14:12:28,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 14:12:28,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 14:12:28,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28" (1/1) ... [2024-10-15 14:12:28,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:12:28,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:12:28,750 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) [2024-10-15 14:12:28,772 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 [2024-10-15 14:12:28,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 14:12:28,838 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2024-10-15 14:12:28,838 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2024-10-15 14:12:28,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 14:12:28,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 14:12:28,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 14:12:28,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 14:12:28,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-15 14:12:28,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 14:12:28,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 14:12:28,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 14:12:28,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 14:12:28,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 14:12:28,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 14:12:28,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-15 14:12:28,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-15 14:12:28,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-15 14:12:28,907 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 14:12:28,909 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 14:12:29,041 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-10-15 14:12:29,041 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 14:12:29,077 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 14:12:29,078 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-15 14:12:29,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:12:29 BoogieIcfgContainer [2024-10-15 14:12:29,078 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 14:12:29,080 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 14:12:29,080 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 14:12:29,084 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 14:12:29,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:12:28" (1/3) ... [2024-10-15 14:12:29,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58606d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:12:29, skipping insertion in model container [2024-10-15 14:12:29,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:28" (2/3) ... [2024-10-15 14:12:29,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58606d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:12:29, skipping insertion in model container [2024-10-15 14:12:29,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:12:29" (3/3) ... [2024-10-15 14:12:29,091 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2024-10-15 14:12:29,109 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 14:12:29,110 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 14:12:29,160 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 14:12:29,166 INFO L333 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;@5c9efe39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 14:12:29,167 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 14:12:29,171 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) [2024-10-15 14:12:29,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-15 14:12:29,178 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:12:29,179 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:12:29,179 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:12:29,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:12:29,185 INFO L85 PathProgramCache]: Analyzing trace with hash -953167140, now seen corresponding path program 1 times [2024-10-15 14:12:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:12:29,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179253232] [2024-10-15 14:12:29,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:12:29,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:12:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:12:29,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:12:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:12:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:12:29,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:12:29,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179253232] [2024-10-15 14:12:29,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179253232] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:12:29,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:12:29,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-15 14:12:29,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44190868] [2024-10-15 14:12:29,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:12:29,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-15 14:12:29,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:12:29,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-15 14:12:29,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-15 14:12:29,775 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) [2024-10-15 14:12:30,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:12:30,025 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-10-15 14:12:30,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 14:12:30,029 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 [2024-10-15 14:12:30,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:12:30,036 INFO L225 Difference]: With dead ends: 44 [2024-10-15 14:12:30,036 INFO L226 Difference]: Without dead ends: 23 [2024-10-15 14:12:30,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-15 14:12:30,048 INFO L432 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 [2024-10-15 14:12:30,050 INFO L433 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] [2024-10-15 14:12:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-15 14:12:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-10-15 14:12:30,090 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) [2024-10-15 14:12:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2024-10-15 14:12:30,092 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2024-10-15 14:12:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:12:30,093 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2024-10-15 14:12:30,093 INFO L472 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) [2024-10-15 14:12:30,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:12:30,094 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2024-10-15 14:12:30,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-15 14:12:30,095 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:12:30,095 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:12:30,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 14:12:30,096 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:12:30,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:12:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash -555487395, now seen corresponding path program 1 times [2024-10-15 14:12:30,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:12:30,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431072674] [2024-10-15 14:12:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:12:30,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:12:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:12:30,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:12:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:12:30,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-15 14:12:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:12:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:12:30,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:12:30,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431072674] [2024-10-15 14:12:30,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431072674] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:12:30,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449913501] [2024-10-15 14:12:30,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:12:30,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:12:30,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:12:30,343 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) [2024-10-15 14:12:30,345 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 14:12:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:12:30,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-15 14:12:30,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:12:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:12:30,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:12:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:12:30,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449913501] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:12:30,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:12:30,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 11 [2024-10-15 14:12:30,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695158374] [2024-10-15 14:12:30,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:12:30,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 14:12:30,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:12:30,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 14:12:30,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-15 14:12:30,734 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) [2024-10-15 14:12:30,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:12:30,888 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2024-10-15 14:12:30,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 14:12:30,889 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 [2024-10-15 14:12:30,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:12:30,890 INFO L225 Difference]: With dead ends: 32 [2024-10-15 14:12:30,890 INFO L226 Difference]: Without dead ends: 30 [2024-10-15 14:12:30,891 INFO L431 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 [2024-10-15 14:12:30,891 INFO L432 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 [2024-10-15 14:12:30,892 INFO L433 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] [2024-10-15 14:12:30,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-15 14:12:30,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-10-15 14:12:30,903 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) [2024-10-15 14:12:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2024-10-15 14:12:30,904 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2024-10-15 14:12:30,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:12:30,904 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2024-10-15 14:12:30,905 INFO L472 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) [2024-10-15 14:12:30,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:12:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2024-10-15 14:12:30,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-15 14:12:30,906 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:12:30,906 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:12:30,921 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 14:12:31,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:12:31,107 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:12:31,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:12:31,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1846538172, now seen corresponding path program 2 times [2024-10-15 14:12:31,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:12:31,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325529359] [2024-10-15 14:12:31,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:12:31,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:12:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:12:31,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:12:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:12:31,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-15 14:12:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:12:31,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-15 14:12:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:12:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-15 14:12:31,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:12:31,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325529359] [2024-10-15 14:12:31,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325529359] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:12:31,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931989523] [2024-10-15 14:12:31,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:12:31,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:12:31,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:12:31,339 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) [2024-10-15 14:12:31,340 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 14:12:31,395 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 14:12:31,395 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:12:31,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-15 14:12:31,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:12:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-15 14:12:31,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:12:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-15 14:12:31,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931989523] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:12:31,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:12:31,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2024-10-15 14:12:31,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927619105] [2024-10-15 14:12:31,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:12:31,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 14:12:31,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:12:31,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 14:12:31,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-10-15 14:12:31,719 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) [2024-10-15 14:12:31,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:12:31,903 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2024-10-15 14:12:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 14:12:31,905 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 [2024-10-15 14:12:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:12:31,906 INFO L225 Difference]: With dead ends: 29 [2024-10-15 14:12:31,906 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 14:12:31,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-10-15 14:12:31,908 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-10-15 14:12:31,910 INFO L433 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] [2024-10-15 14:12:31,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 14:12:31,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 14:12:31,914 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) [2024-10-15 14:12:31,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 14:12:31,914 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2024-10-15 14:12:31,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:12:31,914 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 14:12:31,915 INFO L472 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) [2024-10-15 14:12:31,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:12:31,915 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 14:12:31,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 14:12:31,919 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 14:12:31,939 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-15 14:12:32,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:12:32,123 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1] [2024-10-15 14:12:32,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 14:12:32,446 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 14:12:32,460 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pathlim!base [2024-10-15 14:12:32,461 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:32,462 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pathlim!offset [2024-10-15 14:12:32,463 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-10-15 14:12:32,463 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:32,463 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!base [2024-10-15 14:12:32,464 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:32,464 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!base [2024-10-15 14:12:32,464 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:32,464 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~p~0!base [2024-10-15 14:12:32,464 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!offset [2024-10-15 14:12:32,464 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-10-15 14:12:32,465 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!offset [2024-10-15 14:12:32,467 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-10-15 14:12:32,474 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:32,475 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!base [2024-10-15 14:12:32,475 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:32,476 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!base [2024-10-15 14:12:32,476 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!offset [2024-10-15 14:12:32,476 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-10-15 14:12:32,476 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!offset [2024-10-15 14:12:32,476 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-10-15 14:12:32,477 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:32,477 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!base [2024-10-15 14:12:32,477 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:32,477 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!base [2024-10-15 14:12:32,477 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!offset [2024-10-15 14:12:32,477 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-10-15 14:12:32,478 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!offset [2024-10-15 14:12:32,478 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-10-15 14:12:32,480 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Boogie2ACSL.translateEnsuresExpression(Boogie2ACSL.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.translateProcedureContract(CACSL2BoogieBacktranslator.java:809) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.translateProcedureContract(CACSL2BoogieBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProcedureContract(ModelTranslationContainer.java:349) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProcedureContract(ModelTranslationContainer.java:349) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProcedureContract(ModelTranslationContainer.java:349) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProcedureContract(ModelTranslationContainer.java:349) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProcedureContract(ModelTranslationContainer.java:338) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.BacktranslationService.translateProcedureContract(BacktranslationService.java:94) at de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.FloydHoareUtils.createProcedureContractResults(FloydHoareUtils.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-10-15 14:12:32,484 INFO L158 Benchmark]: Toolchain (without parser) took 4083.45ms. Allocated memory was 176.2MB in the beginning and 228.6MB in the end (delta: 52.4MB). Free memory was 107.0MB in the beginning and 151.9MB in the end (delta: -44.9MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2024-10-15 14:12:32,485 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 176.2MB. Free memory was 133.8MB in the beginning and 133.6MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 14:12:32,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.02ms. Allocated memory is still 176.2MB. Free memory was 106.7MB in the beginning and 94.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 14:12:32,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.78ms. Allocated memory is still 176.2MB. Free memory was 94.5MB in the beginning and 93.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 14:12:32,486 INFO L158 Benchmark]: Boogie Preprocessor took 35.15ms. Allocated memory is still 176.2MB. Free memory was 93.4MB in the beginning and 91.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 14:12:32,486 INFO L158 Benchmark]: RCFGBuilder took 365.58ms. Allocated memory is still 176.2MB. Free memory was 91.5MB in the beginning and 137.8MB in the end (delta: -46.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-15 14:12:32,486 INFO L158 Benchmark]: TraceAbstraction took 3403.76ms. Allocated memory was 176.2MB in the beginning and 228.6MB in the end (delta: 52.4MB). Free memory was 137.1MB in the beginning and 151.9MB in the end (delta: -14.7MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2024-10-15 14:12:32,492 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 176.2MB. Free memory was 133.8MB in the beginning and 133.6MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.02ms. Allocated memory is still 176.2MB. Free memory was 106.7MB in the beginning and 94.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.78ms. Allocated memory is still 176.2MB. Free memory was 94.5MB in the beginning and 93.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.15ms. Allocated memory is still 176.2MB. Free memory was 93.4MB in the beginning and 91.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 365.58ms. Allocated memory is still 176.2MB. Free memory was 91.5MB in the beginning and 137.8MB in the end (delta: -46.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3403.76ms. Allocated memory was 176.2MB in the beginning and 228.6MB in the end (delta: 52.4MB). Free memory was 137.1MB in the beginning and 151.9MB in the end (delta: -14.7MB). Peak memory consumption was 38.3MB. 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: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.3s 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, 1.4s 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Boogie2ACSL.translateEnsuresExpression(Boogie2ACSL.java:126) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-10-15 14:12:32,522 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_Bitvector.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 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 14:12:34,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 14:12:34,893 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-15 14:12:34,899 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 14:12:34,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 14:12:34,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 14:12:34,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 14:12:34,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 14:12:34,931 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 14:12:34,935 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 14:12:34,935 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 14:12:34,935 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 14:12:34,936 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 14:12:34,936 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 14:12:34,936 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 14:12:34,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 14:12:34,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 14:12:34,937 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 14:12:34,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 14:12:34,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 14:12:34,938 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 14:12:34,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 14:12:34,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 14:12:34,942 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-15 14:12:34,943 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-15 14:12:34,943 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 14:12:34,943 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-15 14:12:34,943 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 14:12:34,944 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 14:12:34,944 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 14:12:34,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 14:12:34,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 14:12:34,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 14:12:34,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 14:12:34,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:12:34,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 14:12:34,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 14:12:34,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 14:12:34,947 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-15 14:12:34,948 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-15 14:12:34,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 14:12:34,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 14:12:34,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 14:12:34,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 14:12:34,949 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-15 14:12:34,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1c73403384a361e15608c077b8e86297621fa69c42f15894e841079f64af74a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 14:12:35,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 14:12:35,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 14:12:35,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 14:12:35,312 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 14:12:35,313 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 14:12:35,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2024-10-15 14:12:36,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 14:12:36,983 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 14:12:36,984 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2024-10-15 14:12:36,991 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/fdc0cb24d/b89aaddb19804633b50d5b28435ac9ee/FLAGa276f94a5 [2024-10-15 14:12:37,012 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/fdc0cb24d/b89aaddb19804633b50d5b28435ac9ee [2024-10-15 14:12:37,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 14:12:37,019 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 14:12:37,022 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 14:12:37,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 14:12:37,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 14:12:37,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:12:37" (1/1) ... [2024-10-15 14:12:37,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c62cce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37, skipping insertion in model container [2024-10-15 14:12:37,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:12:37" (1/1) ... [2024-10-15 14:12:37,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 14:12:37,247 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] [2024-10-15 14:12:37,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:12:37,282 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 14:12:37,294 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] [2024-10-15 14:12:37,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:12:37,326 INFO L204 MainTranslator]: Completed translation [2024-10-15 14:12:37,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37 WrapperNode [2024-10-15 14:12:37,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 14:12:37,328 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 14:12:37,328 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 14:12:37,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 14:12:37,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37" (1/1) ... [2024-10-15 14:12:37,346 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37" (1/1) ... [2024-10-15 14:12:37,353 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 14:12:37,354 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 14:12:37,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 14:12:37,355 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 14:12:37,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 14:12:37,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37" (1/1) ... [2024-10-15 14:12:37,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37" (1/1) ... [2024-10-15 14:12:37,369 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37" (1/1) ... [2024-10-15 14:12:37,393 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]. [2024-10-15 14:12:37,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37" (1/1) ... [2024-10-15 14:12:37,393 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37" (1/1) ... [2024-10-15 14:12:37,403 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37" (1/1) ... [2024-10-15 14:12:37,407 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37" (1/1) ... [2024-10-15 14:12:37,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37" (1/1) ... [2024-10-15 14:12:37,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37" (1/1) ... [2024-10-15 14:12:37,416 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 14:12:37,417 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 14:12:37,417 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 14:12:37,417 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 14:12:37,419 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37" (1/1) ... [2024-10-15 14:12:37,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:12:37,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:12:37,455 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) [2024-10-15 14:12:37,459 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 [2024-10-15 14:12:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 14:12:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2024-10-15 14:12:37,507 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2024-10-15 14:12:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-15 14:12:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-15 14:12:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 14:12:37,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 14:12:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-15 14:12:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 14:12:37,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 14:12:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 14:12:37,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 14:12:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-15 14:12:37,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-15 14:12:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-15 14:12:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-15 14:12:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-15 14:12:37,611 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 14:12:37,613 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 14:12:37,809 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-10-15 14:12:37,809 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 14:12:37,838 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 14:12:37,838 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-15 14:12:37,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:12:37 BoogieIcfgContainer [2024-10-15 14:12:37,839 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 14:12:37,841 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 14:12:37,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 14:12:37,846 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 14:12:37,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:12:37" (1/3) ... [2024-10-15 14:12:37,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b647a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:12:37, skipping insertion in model container [2024-10-15 14:12:37,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:37" (2/3) ... [2024-10-15 14:12:37,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b647a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:12:37, skipping insertion in model container [2024-10-15 14:12:37,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:12:37" (3/3) ... [2024-10-15 14:12:37,849 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2024-10-15 14:12:37,866 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 14:12:37,867 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 14:12:37,930 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 14:12:37,941 INFO L333 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;@3bcd8647, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 14:12:37,941 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 14:12:37,947 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) [2024-10-15 14:12:37,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-15 14:12:37,954 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:12:37,954 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:12:37,955 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:12:37,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:12:37,960 INFO L85 PathProgramCache]: Analyzing trace with hash -953167140, now seen corresponding path program 1 times [2024-10-15 14:12:37,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-15 14:12:37,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880591786] [2024-10-15 14:12:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:12:37,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-15 14:12:37,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-10-15 14:12:37,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-15 14:12:37,980 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-15 14:12:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:12:38,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-15 14:12:38,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:12:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:12:38,340 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:12:38,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-15 14:12:38,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880591786] [2024-10-15 14:12:38,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880591786] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:12:38,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:12:38,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-15 14:12:38,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815312193] [2024-10-15 14:12:38,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:12:38,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-15 14:12:38,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-15 14:12:38,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-15 14:12:38,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-15 14:12:38,374 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 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:12:38,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:12:38,566 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-10-15 14:12:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 14:12:38,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-10-15 14:12:38,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:12:38,576 INFO L225 Difference]: With dead ends: 44 [2024-10-15 14:12:38,577 INFO L226 Difference]: Without dead ends: 23 [2024-10-15 14:12:38,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-15 14:12:38,586 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:12:38,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 55 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:12:38,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-15 14:12:38,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-10-15 14:12:38,628 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) [2024-10-15 14:12:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2024-10-15 14:12:38,634 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2024-10-15 14:12:38,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:12:38,635 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2024-10-15 14:12:38,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:12:38,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:12:38,637 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2024-10-15 14:12:38,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-15 14:12:38,639 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:12:38,639 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:12:38,643 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-15 14:12:38,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-15 14:12:38,841 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:12:38,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:12:38,843 INFO L85 PathProgramCache]: Analyzing trace with hash -555487395, now seen corresponding path program 1 times [2024-10-15 14:12:38,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-15 14:12:38,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218754950] [2024-10-15 14:12:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:12:38,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-15 14:12:38,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-10-15 14:12:38,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-15 14:12:38,848 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-15 14:12:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:12:38,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 14:12:38,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:12:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:12:39,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:12:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:12:39,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-15 14:12:39,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218754950] [2024-10-15 14:12:39,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218754950] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:12:39,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:12:39,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2024-10-15 14:12:39,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516611864] [2024-10-15 14:12:39,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:12:39,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 14:12:39,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-15 14:12:39,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 14:12:39,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-10-15 14:12:39,434 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 14:12:39,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:12:39,632 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2024-10-15 14:12:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 14:12:39,633 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2024-10-15 14:12:39,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:12:39,634 INFO L225 Difference]: With dead ends: 32 [2024-10-15 14:12:39,634 INFO L226 Difference]: Without dead ends: 30 [2024-10-15 14:12:39,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-10-15 14:12:39,636 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:12:39,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 56 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:12:39,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-15 14:12:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-10-15 14:12:39,655 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) [2024-10-15 14:12:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2024-10-15 14:12:39,656 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2024-10-15 14:12:39,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:12:39,656 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2024-10-15 14:12:39,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 14:12:39,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:12:39,657 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2024-10-15 14:12:39,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-15 14:12:39,658 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:12:39,658 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:12:39,663 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-15 14:12:39,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-15 14:12:39,860 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:12:39,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:12:39,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1846538172, now seen corresponding path program 2 times [2024-10-15 14:12:39,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-15 14:12:39,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456039635] [2024-10-15 14:12:39,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:12:39,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-15 14:12:39,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-10-15 14:12:39,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-15 14:12:39,865 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-15 14:12:39,916 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 14:12:39,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:12:39,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 14:12:39,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:12:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-15 14:12:40,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:12:40,334 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-15 14:12:40,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-15 14:12:40,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456039635] [2024-10-15 14:12:40,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456039635] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:12:40,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:12:40,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2024-10-15 14:12:40,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67519407] [2024-10-15 14:12:40,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:12:40,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 14:12:40,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-15 14:12:40,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 14:12:40,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-10-15 14:12:40,337 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 15 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 14:12:40,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:12:40,510 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2024-10-15 14:12:40,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 14:12:40,511 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2024-10-15 14:12:40,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:12:40,511 INFO L225 Difference]: With dead ends: 29 [2024-10-15 14:12:40,511 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 14:12:40,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-10-15 14:12:40,513 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:12:40,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 52 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:12:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 14:12:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 14:12:40,515 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) [2024-10-15 14:12:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 14:12:40,515 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2024-10-15 14:12:40,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:12:40,516 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 14:12:40,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 14:12:40,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:12:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 14:12:40,517 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 14:12:40,519 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 14:12:40,524 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-15 14:12:40,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-15 14:12:40,724 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1] [2024-10-15 14:12:40,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 14:12:41,129 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 14:12:41,138 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-10-15 14:12:41,139 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!base [2024-10-15 14:12:41,139 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:41,140 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pathlim!base [2024-10-15 14:12:41,140 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:41,140 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pathlim!offset [2024-10-15 14:12:41,140 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!base [2024-10-15 14:12:41,140 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:41,140 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!offset [2024-10-15 14:12:41,141 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!offset [2024-10-15 14:12:41,147 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-10-15 14:12:41,147 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!base [2024-10-15 14:12:41,147 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:41,147 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!base [2024-10-15 14:12:41,147 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:41,148 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!offset [2024-10-15 14:12:41,148 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!offset [2024-10-15 14:12:41,148 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!offset [2024-10-15 14:12:41,148 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!base [2024-10-15 14:12:41,148 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:41,148 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!base [2024-10-15 14:12:41,149 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~tmp~0!base [2024-10-15 14:12:41,149 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathbuf!offset [2024-10-15 14:12:41,149 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~pathlim!offset [2024-10-15 14:12:41,151 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Boogie2ACSL.translateEnsuresExpression(Boogie2ACSL.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.translateProcedureContract(CACSL2BoogieBacktranslator.java:809) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator.translateProcedureContract(CACSL2BoogieBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProcedureContract(ModelTranslationContainer.java:349) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProcedureContract(ModelTranslationContainer.java:349) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProcedureContract(ModelTranslationContainer.java:349) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProcedureContract(ModelTranslationContainer.java:349) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProcedureContract(ModelTranslationContainer.java:338) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.BacktranslationService.translateProcedureContract(BacktranslationService.java:94) at de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.FloydHoareUtils.createProcedureContractResults(FloydHoareUtils.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-10-15 14:12:41,154 INFO L158 Benchmark]: Toolchain (without parser) took 4135.16ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 35.8MB in the beginning and 28.2MB in the end (delta: 7.5MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2024-10-15 14:12:41,154 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 52.4MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 14:12:41,155 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.54ms. Allocated memory is still 69.2MB. Free memory was 35.6MB in the beginning and 40.8MB in the end (delta: -5.2MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2024-10-15 14:12:41,155 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.15ms. Allocated memory is still 69.2MB. Free memory was 40.8MB in the beginning and 39.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 14:12:41,155 INFO L158 Benchmark]: Boogie Preprocessor took 60.98ms. Allocated memory is still 69.2MB. Free memory was 39.7MB in the beginning and 37.7MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-15 14:12:41,156 INFO L158 Benchmark]: RCFGBuilder took 422.72ms. Allocated memory is still 69.2MB. Free memory was 37.7MB in the beginning and 43.0MB in the end (delta: -5.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-15 14:12:41,156 INFO L158 Benchmark]: TraceAbstraction took 3312.07ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 42.4MB in the beginning and 28.2MB in the end (delta: 14.2MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2024-10-15 14:12:41,158 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 52.4MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.54ms. Allocated memory is still 69.2MB. Free memory was 35.6MB in the beginning and 40.8MB in the end (delta: -5.2MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.15ms. Allocated memory is still 69.2MB. Free memory was 40.8MB in the beginning and 39.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.98ms. Allocated memory is still 69.2MB. Free memory was 39.7MB in the beginning and 37.7MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 422.72ms. Allocated memory is still 69.2MB. Free memory was 37.7MB in the beginning and 43.0MB in the end (delta: -5.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3312.07ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 42.4MB in the beginning and 28.2MB in the end (delta: 14.2MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!offset - 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: ~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: #in~pathlim!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~tmp~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~pathbuf!offset - 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!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: #in~pathbuf!offset - 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!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: #in~pathbuf!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~pathlim!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: 2.8s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 163 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 135 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 230 IncrementalHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 28 mSDtfsCounter, 230 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, InterpolantAutomatonStates: 24, 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, 1.2s InterpolantComputationTime, 57 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 446 SizeOfPredicates, 18 NumberOfNonLiveVariables, 197 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 24/38 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Boogie2ACSL.translateEnsuresExpression(Boogie2ACSL.java:126) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-10-15 14:12:41,198 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: ERROR: ExceptionOrErrorResult: NullPointerException: null