./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter_v.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/hardware-verification-bv/btor2c-lazyMod.counter_v.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 1a2c18f59baead1d109170e3bc1aa0d58cc7f788c3fc781fbbe1fe40f9367554 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 10:52:58,269 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 10:52:58,336 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-16 10:52:58,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 10:52:58,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 10:52:58,366 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 10:52:58,367 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 10:52:58,367 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 10:52:58,369 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 10:52:58,373 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 10:52:58,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 10:52:58,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 10:52:58,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 10:52:58,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 10:52:58,374 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 10:52:58,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 10:52:58,375 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 10:52:58,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 10:52:58,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 10:52:58,378 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 10:52:58,379 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 10:52:58,379 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 10:52:58,379 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 10:52:58,380 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 10:52:58,380 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 10:52:58,380 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 10:52:58,381 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 10:52:58,381 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 10:52:58,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 10:52:58,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 10:52:58,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 10:52:58,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 10:52:58,382 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 10:52:58,382 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 10:52:58,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 10:52:58,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 10:52:58,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 10:52:58,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 10:52:58,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 10:52:58,384 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a2c18f59baead1d109170e3bc1aa0d58cc7f788c3fc781fbbe1fe40f9367554 [2024-11-16 10:52:58,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 10:52:58,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 10:52:58,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 10:52:58,649 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 10:52:58,651 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 10:52:58,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter_v.c [2024-11-16 10:53:00,059 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 10:53:00,262 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 10:53:00,262 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter_v.c [2024-11-16 10:53:00,279 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9822a5268/b6256a086f0d4c32bd126721e7e9412f/FLAGd470cd6fa [2024-11-16 10:53:00,626 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9822a5268/b6256a086f0d4c32bd126721e7e9412f [2024-11-16 10:53:00,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 10:53:00,630 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 10:53:00,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 10:53:00,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 10:53:00,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 10:53:00,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:53:00" (1/1) ... [2024-11-16 10:53:00,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bac0fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00, skipping insertion in model container [2024-11-16 10:53:00,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:53:00" (1/1) ... [2024-11-16 10:53:00,667 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 10:53:00,849 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/hardware-verification-bv/btor2c-lazyMod.counter_v.c[1249,1262] [2024-11-16 10:53:00,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 10:53:00,887 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 10:53:00,900 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/hardware-verification-bv/btor2c-lazyMod.counter_v.c[1249,1262] [2024-11-16 10:53:00,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 10:53:00,933 INFO L204 MainTranslator]: Completed translation [2024-11-16 10:53:00,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00 WrapperNode [2024-11-16 10:53:00,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 10:53:00,935 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 10:53:00,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 10:53:00,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 10:53:00,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00" (1/1) ... [2024-11-16 10:53:00,953 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00" (1/1) ... [2024-11-16 10:53:00,986 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 107 [2024-11-16 10:53:00,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 10:53:00,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 10:53:00,988 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 10:53:00,988 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 10:53:00,999 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00" (1/1) ... [2024-11-16 10:53:00,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00" (1/1) ... [2024-11-16 10:53:01,002 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00" (1/1) ... [2024-11-16 10:53:01,017 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]. [2024-11-16 10:53:01,018 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00" (1/1) ... [2024-11-16 10:53:01,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00" (1/1) ... [2024-11-16 10:53:01,026 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00" (1/1) ... [2024-11-16 10:53:01,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00" (1/1) ... [2024-11-16 10:53:01,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00" (1/1) ... [2024-11-16 10:53:01,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00" (1/1) ... [2024-11-16 10:53:01,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 10:53:01,039 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 10:53:01,039 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 10:53:01,039 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 10:53:01,040 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00" (1/1) ... [2024-11-16 10:53:01,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 10:53:01,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:53:01,097 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) [2024-11-16 10:53:01,102 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 [2024-11-16 10:53:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 10:53:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 10:53:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 10:53:01,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 10:53:01,246 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 10:53:01,249 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 10:53:01,557 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-16 10:53:01,557 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 10:53:01,592 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 10:53:01,593 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 10:53:01,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:53:01 BoogieIcfgContainer [2024-11-16 10:53:01,595 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 10:53:01,599 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 10:53:01,599 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 10:53:01,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 10:53:01,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:53:00" (1/3) ... [2024-11-16 10:53:01,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2934c151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:53:01, skipping insertion in model container [2024-11-16 10:53:01,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:00" (2/3) ... [2024-11-16 10:53:01,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2934c151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:53:01, skipping insertion in model container [2024-11-16 10:53:01,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:53:01" (3/3) ... [2024-11-16 10:53:01,607 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.counter_v.c [2024-11-16 10:53:01,622 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 10:53:01,622 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 10:53:01,687 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 10:53:01,693 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;@3d1a605a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 10:53:01,693 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 10:53:01,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 32 states have internal predecessors, (44), 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) [2024-11-16 10:53:01,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 10:53:01,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:53:01,703 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:53:01,703 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:53:01,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:53:01,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1327652470, now seen corresponding path program 1 times [2024-11-16 10:53:01,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:53:01,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847726012] [2024-11-16 10:53:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:53:01,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:53:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:53:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 10:53:02,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:53:02,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847726012] [2024-11-16 10:53:02,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847726012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:53:02,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 10:53:02,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 10:53:02,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305405092] [2024-11-16 10:53:02,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:53:02,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 10:53:02,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:53:02,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 10:53:02,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 10:53:02,320 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 32 states have internal predecessors, (44), 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) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-16 10:53:02,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:53:02,379 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2024-11-16 10:53:02,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 10:53:02,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) Word has length 14 [2024-11-16 10:53:02,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:53:02,406 INFO L225 Difference]: With dead ends: 55 [2024-11-16 10:53:02,407 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 10:53:02,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 10:53:02,420 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 10:53:02,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 55 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 10:53:02,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 10:53:02,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-16 10:53:02,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 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) [2024-11-16 10:53:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2024-11-16 10:53:02,476 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2024-11-16 10:53:02,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:53:02,476 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2024-11-16 10:53:02,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-16 10:53:02,476 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2024-11-16 10:53:02,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 10:53:02,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:53:02,477 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:53:02,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 10:53:02,478 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:53:02,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:53:02,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1165840635, now seen corresponding path program 1 times [2024-11-16 10:53:02,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:53:02,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626372835] [2024-11-16 10:53:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:53:02,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:53:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:53:02,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 10:53:02,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:53:02,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626372835] [2024-11-16 10:53:02,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626372835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:53:02,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 10:53:02,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 10:53:02,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496933436] [2024-11-16 10:53:02,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:53:02,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 10:53:02,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:53:02,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 10:53:02,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 10:53:02,656 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-16 10:53:02,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:53:02,694 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-16 10:53:02,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 10:53:02,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) Word has length 16 [2024-11-16 10:53:02,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:53:02,699 INFO L225 Difference]: With dead ends: 33 [2024-11-16 10:53:02,699 INFO L226 Difference]: Without dead ends: 30 [2024-11-16 10:53:02,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 10:53:02,700 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 10:53:02,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 10:53:02,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-16 10:53:02,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-16 10:53:02,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 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) [2024-11-16 10:53:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2024-11-16 10:53:02,711 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 16 [2024-11-16 10:53:02,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:53:02,711 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2024-11-16 10:53:02,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-16 10:53:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2024-11-16 10:53:02,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-16 10:53:02,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:53:02,714 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:53:02,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 10:53:02,714 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:53:02,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:53:02,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1636267933, now seen corresponding path program 1 times [2024-11-16 10:53:02,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:53:02,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019025984] [2024-11-16 10:53:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:53:02,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:53:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 10:53:02,750 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 10:53:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 10:53:02,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 10:53:02,801 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 10:53:02,804 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 10:53:02,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 10:53:02,809 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-16 10:53:02,838 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 10:53:02,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:53:02 BoogieIcfgContainer [2024-11-16 10:53:02,842 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 10:53:02,843 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 10:53:02,844 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 10:53:02,844 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 10:53:02,845 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:53:01" (3/4) ... [2024-11-16 10:53:02,848 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-16 10:53:02,849 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 10:53:02,850 INFO L158 Benchmark]: Toolchain (without parser) took 2219.82ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 82.5MB in the beginning and 121.8MB in the end (delta: -39.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 10:53:02,850 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 155.2MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 10:53:02,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.56ms. Allocated memory is still 155.2MB. Free memory was 82.5MB in the beginning and 69.0MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-16 10:53:02,851 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.65ms. Allocated memory is still 155.2MB. Free memory was 69.0MB in the beginning and 65.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 10:53:02,852 INFO L158 Benchmark]: Boogie Preprocessor took 46.53ms. Allocated memory is still 155.2MB. Free memory was 65.9MB in the beginning and 63.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 10:53:02,853 INFO L158 Benchmark]: IcfgBuilder took 556.26ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 63.4MB in the beginning and 150.2MB in the end (delta: -86.7MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2024-11-16 10:53:02,853 INFO L158 Benchmark]: TraceAbstraction took 1243.74ms. Allocated memory is still 190.8MB. Free memory was 150.2MB in the beginning and 122.9MB in the end (delta: 27.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-16 10:53:02,854 INFO L158 Benchmark]: Witness Printer took 5.85ms. Allocated memory is still 190.8MB. Free memory was 122.9MB in the beginning and 121.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 10:53:02,856 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 155.2MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.56ms. Allocated memory is still 155.2MB. Free memory was 82.5MB in the beginning and 69.0MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.65ms. Allocated memory is still 155.2MB. Free memory was 69.0MB in the beginning and 65.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.53ms. Allocated memory is still 155.2MB. Free memory was 65.9MB in the beginning and 63.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 556.26ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 63.4MB in the beginning and 150.2MB in the end (delta: -86.7MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1243.74ms. Allocated memory is still 190.8MB. Free memory was 150.2MB in the beginning and 122.9MB in the end (delta: 27.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 5.85ms. Allocated memory is still 190.8MB. Free memory was 122.9MB in the beginning and 121.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 57. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L32] const SORT_4 var_5 = 1; [L33] const SORT_4 var_8 = 15; [L34] const SORT_1 var_12 = 1; [L36] SORT_1 input_2; [L37] SORT_1 input_3; [L39] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=15, var_12=1, var_5=1, var_8=15] [L39] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L41] SORT_4 init_7_arg_1 = var_5; [L42] state_6 = init_7_arg_1 VAL [mask_SORT_1=1, mask_SORT_4=15, state_6=1, var_12=1, var_5=1, var_8=15] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_3 = __VERIFIER_nondet_uchar() [L47] EXPR input_3 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, state_6=1, var_12=1, var_5=1, var_8=15] [L47] input_3 = input_3 & mask_SORT_1 [L50] SORT_4 var_9_arg_0 = state_6; [L51] SORT_4 var_9_arg_1 = var_8; [L52] SORT_1 var_9 = var_9_arg_0 != var_9_arg_1; [L53] SORT_1 var_13_arg_0 = var_9; [L54] SORT_1 var_13 = ~var_13_arg_0; [L55] SORT_1 var_14_arg_0 = var_12; [L56] SORT_1 var_14_arg_1 = var_13; VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=15, state_6=1, var_12=1, var_14_arg_0=1, var_14_arg_1=-2, var_5=1, var_8=15] [L57] EXPR var_14_arg_0 & var_14_arg_1 VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=15, state_6=1, var_12=1, var_5=1, var_8=15] [L57] SORT_1 var_14 = var_14_arg_0 & var_14_arg_1; [L58] EXPR var_14 & mask_SORT_1 VAL [input_3=0, mask_SORT_1=1, mask_SORT_4=15, state_6=1, var_12=1, var_5=1, var_8=15] [L58] var_14 = var_14 & mask_SORT_1 [L59] SORT_1 bad_15_arg_0 = var_14; [L60] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 137 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 80 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 57 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-16 10:53:02,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 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/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/hardware-verification-bv/btor2c-lazyMod.counter_v.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 64bit --witnessprinter.graph.data.programhash 1a2c18f59baead1d109170e3bc1aa0d58cc7f788c3fc781fbbe1fe40f9367554 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 10:53:05,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 10:53:05,243 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-16 10:53:05,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 10:53:05,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 10:53:05,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 10:53:05,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 10:53:05,286 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 10:53:05,287 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 10:53:05,288 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 10:53:05,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 10:53:05,289 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 10:53:05,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 10:53:05,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 10:53:05,292 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 10:53:05,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 10:53:05,293 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 10:53:05,293 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 10:53:05,293 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 10:53:05,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 10:53:05,297 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 10:53:05,298 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-16 10:53:05,298 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-16 10:53:05,298 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 10:53:05,298 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-16 10:53:05,299 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 10:53:05,299 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 10:53:05,299 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 10:53:05,300 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 10:53:05,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 10:53:05,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 10:53:05,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 10:53:05,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 10:53:05,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 10:53:05,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 10:53:05,303 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-16 10:53:05,304 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-16 10:53:05,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 10:53:05,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 10:53:05,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 10:53:05,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 10:53:05,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a2c18f59baead1d109170e3bc1aa0d58cc7f788c3fc781fbbe1fe40f9367554 [2024-11-16 10:53:05,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 10:53:05,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 10:53:05,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 10:53:05,693 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 10:53:05,694 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 10:53:05,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter_v.c [2024-11-16 10:53:07,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 10:53:07,569 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 10:53:07,570 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter_v.c [2024-11-16 10:53:07,581 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddfcb5a82/c153d29bf69e47c98e8bd9a73178d5cc/FLAG016ef0325 [2024-11-16 10:53:07,935 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddfcb5a82/c153d29bf69e47c98e8bd9a73178d5cc [2024-11-16 10:53:07,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 10:53:07,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 10:53:07,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 10:53:07,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 10:53:07,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 10:53:07,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:53:07" (1/1) ... [2024-11-16 10:53:07,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed32058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:07, skipping insertion in model container [2024-11-16 10:53:07,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:53:07" (1/1) ... [2024-11-16 10:53:07,967 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 10:53:08,170 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/hardware-verification-bv/btor2c-lazyMod.counter_v.c[1249,1262] [2024-11-16 10:53:08,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 10:53:08,231 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 10:53:08,245 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/hardware-verification-bv/btor2c-lazyMod.counter_v.c[1249,1262] [2024-11-16 10:53:08,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 10:53:08,296 INFO L204 MainTranslator]: Completed translation [2024-11-16 10:53:08,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:08 WrapperNode [2024-11-16 10:53:08,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 10:53:08,298 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 10:53:08,298 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 10:53:08,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 10:53:08,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:08" (1/1) ... [2024-11-16 10:53:08,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:08" (1/1) ... [2024-11-16 10:53:08,360 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2024-11-16 10:53:08,362 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 10:53:08,363 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 10:53:08,363 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 10:53:08,363 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 10:53:08,372 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:08" (1/1) ... [2024-11-16 10:53:08,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:08" (1/1) ... [2024-11-16 10:53:08,379 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:08" (1/1) ... [2024-11-16 10:53:08,400 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]. [2024-11-16 10:53:08,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:08" (1/1) ... [2024-11-16 10:53:08,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:08" (1/1) ... [2024-11-16 10:53:08,408 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:08" (1/1) ... [2024-11-16 10:53:08,412 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:08" (1/1) ... [2024-11-16 10:53:08,414 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:08" (1/1) ... [2024-11-16 10:53:08,415 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:08" (1/1) ... [2024-11-16 10:53:08,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 10:53:08,420 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 10:53:08,420 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 10:53:08,421 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 10:53:08,422 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:08" (1/1) ... [2024-11-16 10:53:08,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 10:53:08,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:53:08,458 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) [2024-11-16 10:53:08,462 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 [2024-11-16 10:53:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 10:53:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-16 10:53:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 10:53:08,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 10:53:08,603 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 10:53:08,605 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 10:53:08,782 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-16 10:53:08,782 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 10:53:08,794 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 10:53:08,796 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 10:53:08,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:53:08 BoogieIcfgContainer [2024-11-16 10:53:08,797 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 10:53:08,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 10:53:08,800 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 10:53:08,803 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 10:53:08,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:53:07" (1/3) ... [2024-11-16 10:53:08,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27652ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:53:08, skipping insertion in model container [2024-11-16 10:53:08,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:08" (2/3) ... [2024-11-16 10:53:08,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27652ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:53:08, skipping insertion in model container [2024-11-16 10:53:08,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:53:08" (3/3) ... [2024-11-16 10:53:08,808 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.counter_v.c [2024-11-16 10:53:08,825 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 10:53:08,826 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 10:53:08,894 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 10:53:08,904 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;@4290d826, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 10:53:08,905 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 10:53:08,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2024-11-16 10:53:08,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-16 10:53:08,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:53:08,917 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-16 10:53:08,919 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:53:08,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:53:08,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1271070717, now seen corresponding path program 1 times [2024-11-16 10:53:08,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 10:53:08,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673755726] [2024-11-16 10:53:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:53:08,956 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 [2024-11-16 10:53:08,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 10:53:08,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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) [2024-11-16 10:53:08,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2024-11-16 10:53:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:53:09,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 10:53:09,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:53:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 10:53:09,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 10:53:09,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 10:53:09,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673755726] [2024-11-16 10:53:09,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673755726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:53:09,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 10:53:09,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 10:53:09,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967755480] [2024-11-16 10:53:09,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:53:09,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 10:53:09,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 10:53:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 10:53:09,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 10:53:09,330 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-11-16 10:53:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:53:09,381 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2024-11-16 10:53:09,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 10:53:09,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) Word has length 6 [2024-11-16 10:53:09,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:53:09,392 INFO L225 Difference]: With dead ends: 22 [2024-11-16 10:53:09,392 INFO L226 Difference]: Without dead ends: 11 [2024-11-16 10:53:09,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 10:53:09,399 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 10:53:09,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 10:53:09,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-11-16 10:53:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2024-11-16 10:53:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2024-11-16 10:53:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2024-11-16 10:53:09,426 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2024-11-16 10:53:09,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:53:09,427 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2024-11-16 10:53:09,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-11-16 10:53:09,428 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2024-11-16 10:53:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-16 10:53:09,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:53:09,430 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:53:09,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2024-11-16 10:53:09,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2024-11-16 10:53:09,631 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:53:09,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:53:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2061110753, now seen corresponding path program 1 times [2024-11-16 10:53:09,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 10:53:09,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63425202] [2024-11-16 10:53:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:53:09,634 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 [2024-11-16 10:53:09,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 10:53:09,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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) [2024-11-16 10:53:09,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2024-11-16 10:53:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:53:09,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 10:53:09,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:53:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 10:53:10,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:53:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 10:53:12,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 10:53:12,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63425202] [2024-11-16 10:53:12,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63425202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 10:53:12,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:53:12,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-16 10:53:12,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182475416] [2024-11-16 10:53:12,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 10:53:12,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 10:53:12,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 10:53:12,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 10:53:12,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-16 10:53:12,840 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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) [2024-11-16 10:53:14,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:53:14,206 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2024-11-16 10:53:14,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 10:53:14,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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) Word has length 9 [2024-11-16 10:53:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:53:14,208 INFO L225 Difference]: With dead ends: 20 [2024-11-16 10:53:14,208 INFO L226 Difference]: Without dead ends: 17 [2024-11-16 10:53:14,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-16 10:53:14,210 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:53:14,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 10:53:14,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-16 10:53:14,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-11-16 10:53:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2024-11-16 10:53:14,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2024-11-16 10:53:14,216 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2024-11-16 10:53:14,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:53:14,216 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2024-11-16 10:53:14,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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) [2024-11-16 10:53:14,216 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-11-16 10:53:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 10:53:14,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:53:14,217 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2024-11-16 10:53:14,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2024-11-16 10:53:14,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2024-11-16 10:53:14,420 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:53:14,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:53:14,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1989777505, now seen corresponding path program 2 times [2024-11-16 10:53:14,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 10:53:14,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150530392] [2024-11-16 10:53:14,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 10:53:14,422 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 [2024-11-16 10:53:14,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 10:53:14,426 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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) [2024-11-16 10:53:14,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2024-11-16 10:53:14,521 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 10:53:14,522 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 10:53:14,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 10:53:14,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:53:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 10:53:16,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:53:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 10:53:26,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 10:53:26,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150530392] [2024-11-16 10:53:26,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150530392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 10:53:26,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:53:26,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-16 10:53:26,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562997893] [2024-11-16 10:53:26,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 10:53:26,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 10:53:26,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 10:53:26,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 10:53:26,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-16 10:53:26,182 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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) [2024-11-16 10:53:31,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:53:31,092 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2024-11-16 10:53:31,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 10:53:31,093 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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) Word has length 15 [2024-11-16 10:53:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:53:31,094 INFO L225 Difference]: With dead ends: 32 [2024-11-16 10:53:31,094 INFO L226 Difference]: Without dead ends: 29 [2024-11-16 10:53:31,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2024-11-16 10:53:31,096 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 10:53:31,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 22 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 10:53:31,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-16 10:53:31,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-16 10:53:31,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 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) [2024-11-16 10:53:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2024-11-16 10:53:31,103 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 15 [2024-11-16 10:53:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:53:31,103 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2024-11-16 10:53:31,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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) [2024-11-16 10:53:31,104 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2024-11-16 10:53:31,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 10:53:31,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:53:31,104 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1] [2024-11-16 10:53:31,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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)] Forceful destruction successful, exit code 0 [2024-11-16 10:53:31,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2024-11-16 10:53:31,306 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:53:31,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:53:31,306 INFO L85 PathProgramCache]: Analyzing trace with hash 778767713, now seen corresponding path program 3 times [2024-11-16 10:53:31,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 10:53:31,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567419204] [2024-11-16 10:53:31,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 10:53:31,307 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 [2024-11-16 10:53:31,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 10:53:31,310 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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) [2024-11-16 10:53:31,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 (5)] Waiting until timeout for monitored process [2024-11-16 10:53:31,436 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-16 10:53:31,436 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 10:53:31,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-16 10:53:31,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:53:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 10:53:37,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:54:24,187 WARN L286 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 956 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)