./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-56.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 14a66acf4e5a26427e31999dbdddc59010c551d9bf4c569a3f4fccee1043a6f6 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 01:16:27,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 01:16:27,676 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 01:16:27,685 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 01:16:27,686 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 01:16:27,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 01:16:27,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 01:16:27,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 01:16:27,726 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 01:16:27,727 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 01:16:27,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 01:16:27,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 01:16:27,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 01:16:27,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 01:16:27,730 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 01:16:27,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 01:16:27,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 01:16:27,734 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 01:16:27,734 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 01:16:27,735 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 01:16:27,735 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 01:16:27,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 01:16:27,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 01:16:27,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 01:16:27,736 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 01:16:27,736 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 01:16:27,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 01:16:27,736 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 01:16:27,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 01:16:27,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 01:16:27,737 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 01:16:27,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 01:16:27,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 01:16:27,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 01:16:27,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 01:16:27,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 01:16:27,738 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 01:16:27,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 01:16:27,739 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 01:16:27,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 01:16:27,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 01:16:27,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 01:16:27,740 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14a66acf4e5a26427e31999dbdddc59010c551d9bf4c569a3f4fccee1043a6f6 [2024-11-12 01:16:27,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 01:16:28,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 01:16:28,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 01:16:28,030 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 01:16:28,031 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 01:16:28,032 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-56.i [2024-11-12 01:16:29,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 01:16:29,668 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 01:16:29,669 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-56.i [2024-11-12 01:16:29,685 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1759948a/4c9e191e50e24a10b73aa7f3febcde65/FLAG14c877457 [2024-11-12 01:16:29,700 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1759948a/4c9e191e50e24a10b73aa7f3febcde65 [2024-11-12 01:16:29,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 01:16:29,704 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 01:16:29,706 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 01:16:29,707 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 01:16:29,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 01:16:29,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:16:29" (1/1) ... [2024-11-12 01:16:29,715 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7389ba30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:29, skipping insertion in model container [2024-11-12 01:16:29,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:16:29" (1/1) ... [2024-11-12 01:16:29,742 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 01:16:29,926 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-56.i[913,926] [2024-11-12 01:16:30,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 01:16:30,012 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 01:16:30,024 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-56.i[913,926] [2024-11-12 01:16:30,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 01:16:30,081 INFO L204 MainTranslator]: Completed translation [2024-11-12 01:16:30,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:30 WrapperNode [2024-11-12 01:16:30,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 01:16:30,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 01:16:30,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 01:16:30,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 01:16:30,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:30" (1/1) ... [2024-11-12 01:16:30,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:30" (1/1) ... [2024-11-12 01:16:30,157 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 155 [2024-11-12 01:16:30,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 01:16:30,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 01:16:30,159 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 01:16:30,159 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 01:16:30,168 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:30" (1/1) ... [2024-11-12 01:16:30,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:30" (1/1) ... [2024-11-12 01:16:30,178 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:30" (1/1) ... [2024-11-12 01:16:30,210 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-12 01:16:30,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:30" (1/1) ... [2024-11-12 01:16:30,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:30" (1/1) ... [2024-11-12 01:16:30,230 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:30" (1/1) ... [2024-11-12 01:16:30,240 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:30" (1/1) ... [2024-11-12 01:16:30,243 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:30" (1/1) ... [2024-11-12 01:16:30,248 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:30" (1/1) ... [2024-11-12 01:16:30,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 01:16:30,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 01:16:30,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 01:16:30,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 01:16:30,255 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:30" (1/1) ... [2024-11-12 01:16:30,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 01:16:30,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 01:16:30,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 01:16:30,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 01:16:30,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 01:16:30,346 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-12 01:16:30,347 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-12 01:16:30,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 01:16:30,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 01:16:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 01:16:30,444 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 01:16:30,446 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 01:16:30,813 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-12 01:16:30,813 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 01:16:30,831 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 01:16:30,833 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-12 01:16:30,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:16:30 BoogieIcfgContainer [2024-11-12 01:16:30,833 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 01:16:30,836 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 01:16:30,836 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 01:16:30,839 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 01:16:30,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:16:29" (1/3) ... [2024-11-12 01:16:30,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb73343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:16:30, skipping insertion in model container [2024-11-12 01:16:30,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:16:30" (2/3) ... [2024-11-12 01:16:30,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb73343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:16:30, skipping insertion in model container [2024-11-12 01:16:30,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:16:30" (3/3) ... [2024-11-12 01:16:30,843 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_normal_file-56.i [2024-11-12 01:16:30,863 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 01:16:30,863 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 01:16:30,958 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 01:16:30,966 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=LoopHeads, 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;@56c3a1a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 01:16:30,973 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-12 01:16:30,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-12 01:16:31,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-12 01:16:31,021 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 01:16:31,022 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 01:16:31,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 01:16:31,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 01:16:31,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1662653458, now seen corresponding path program 1 times [2024-11-12 01:16:31,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 01:16:31,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350751971] [2024-11-12 01:16:31,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 01:16:31,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 01:16:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-12 01:16:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 01:16:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-12 01:16:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-12 01:16:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-12 01:16:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-12 01:16:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-12 01:16:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-12 01:16:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-12 01:16:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-12 01:16:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-12 01:16:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-12 01:16:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-12 01:16:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-12 01:16:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-12 01:16:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-12 01:16:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-12 01:16:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-12 01:16:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-12 01:16:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-12 01:16:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-12 01:16:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-12 01:16:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-11-12 01:16:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-12 01:16:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-11-12 01:16:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-11-12 01:16:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-12 01:16:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-12 01:16:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-12 01:16:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-12 01:16:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 01:16:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-11-12 01:16:31,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 01:16:31,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350751971] [2024-11-12 01:16:31,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350751971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 01:16:31,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 01:16:31,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 01:16:31,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560998347] [2024-11-12 01:16:31,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 01:16:31,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 01:16:31,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 01:16:31,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 01:16:31,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 01:16:31,578 INFO L87 Difference]: Start difference. First operand has 72 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-12 01:16:31,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 01:16:31,612 INFO L93 Difference]: Finished difference Result 137 states and 246 transitions. [2024-11-12 01:16:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 01:16:31,617 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) Word has length 181 [2024-11-12 01:16:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 01:16:31,627 INFO L225 Difference]: With dead ends: 137 [2024-11-12 01:16:31,627 INFO L226 Difference]: Without dead ends: 68 [2024-11-12 01:16:31,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 01:16:31,637 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 01:16:31,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 01:16:31,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-12 01:16:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-12 01:16:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-12 01:16:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 104 transitions. [2024-11-12 01:16:31,696 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 104 transitions. Word has length 181 [2024-11-12 01:16:31,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 01:16:31,697 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 104 transitions. [2024-11-12 01:16:31,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-12 01:16:31,699 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 104 transitions. [2024-11-12 01:16:31,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-12 01:16:31,705 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 01:16:31,707 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 01:16:31,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 01:16:31,707 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 01:16:31,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 01:16:31,709 INFO L85 PathProgramCache]: Analyzing trace with hash 361401682, now seen corresponding path program 1 times [2024-11-12 01:16:31,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 01:16:31,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954325916] [2024-11-12 01:16:31,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 01:16:31,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 01:16:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat