./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.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 54eceae7382bc15f3f6868c637e60b7eb166af5d1c4b040a6f157b03b87c995c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 06:21:58,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 06:21:59,000 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-14 06:21:59,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 06:21:59,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 06:21:59,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 06:21:59,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 06:21:59,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 06:21:59,050 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 06:21:59,050 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 06:21:59,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 06:21:59,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 06:21:59,052 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 06:21:59,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 06:21:59,054 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 06:21:59,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 06:21:59,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 06:21:59,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 06:21:59,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 06:21:59,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 06:21:59,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 06:21:59,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 06:21:59,059 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 06:21:59,060 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 06:21:59,060 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 06:21:59,060 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 06:21:59,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 06:21:59,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 06:21:59,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 06:21:59,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 06:21:59,061 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 06:21:59,061 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 06:21:59,061 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 06:21:59,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 06:21:59,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 06:21:59,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 06:21:59,063 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 06:21:59,063 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 06:21:59,063 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 06:21:59,064 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54eceae7382bc15f3f6868c637e60b7eb166af5d1c4b040a6f157b03b87c995c [2024-10-14 06:21:59,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 06:21:59,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 06:21:59,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 06:21:59,414 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 06:21:59,415 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 06:21:59,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c [2024-10-14 06:22:01,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 06:22:01,300 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 06:22:01,301 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c [2024-10-14 06:22:01,310 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b812151d6/f235124ffb3b4f1796352135e5dba4df/FLAG5d9b5ad62 [2024-10-14 06:22:01,333 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b812151d6/f235124ffb3b4f1796352135e5dba4df [2024-10-14 06:22:01,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 06:22:01,337 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 06:22:01,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 06:22:01,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 06:22:01,344 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 06:22:01,345 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:22:01" (1/1) ... [2024-10-14 06:22:01,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@269d1c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01, skipping insertion in model container [2024-10-14 06:22:01,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:22:01" (1/1) ... [2024-10-14 06:22:01,375 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 06:22:01,519 WARN L248 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.h_traffic_light_example.c[1263,1276] [2024-10-14 06:22:01,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 06:22:01,595 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 06:22:01,609 WARN L248 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.h_traffic_light_example.c[1263,1276] [2024-10-14 06:22:01,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 06:22:01,763 INFO L204 MainTranslator]: Completed translation [2024-10-14 06:22:01,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01 WrapperNode [2024-10-14 06:22:01,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 06:22:01,765 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 06:22:01,765 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 06:22:01,765 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 06:22:01,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01" (1/1) ... [2024-10-14 06:22:01,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01" (1/1) ... [2024-10-14 06:22:01,834 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 278 [2024-10-14 06:22:01,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 06:22:01,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 06:22:01,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 06:22:01,836 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 06:22:01,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01" (1/1) ... [2024-10-14 06:22:01,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01" (1/1) ... [2024-10-14 06:22:01,854 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01" (1/1) ... [2024-10-14 06:22:01,878 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]. [2024-10-14 06:22:01,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01" (1/1) ... [2024-10-14 06:22:01,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01" (1/1) ... [2024-10-14 06:22:01,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01" (1/1) ... [2024-10-14 06:22:01,894 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01" (1/1) ... [2024-10-14 06:22:01,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01" (1/1) ... [2024-10-14 06:22:01,902 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01" (1/1) ... [2024-10-14 06:22:01,909 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 06:22:01,910 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 06:22:01,910 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 06:22:01,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 06:22:01,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01" (1/1) ... [2024-10-14 06:22:01,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 06:22:01,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 06:22:01,970 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) [2024-10-14 06:22:01,979 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 [2024-10-14 06:22:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 06:22:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 06:22:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 06:22:02,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 06:22:02,176 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 06:22:02,179 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 06:22:02,671 INFO L? ?]: Removed 176 outVars from TransFormulas that were not future-live. [2024-10-14 06:22:02,671 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 06:22:02,710 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 06:22:02,710 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 06:22:02,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:22:02 BoogieIcfgContainer [2024-10-14 06:22:02,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 06:22:02,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 06:22:02,717 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 06:22:02,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 06:22:02,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:22:01" (1/3) ... [2024-10-14 06:22:02,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71646ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:22:02, skipping insertion in model container [2024-10-14 06:22:02,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:01" (2/3) ... [2024-10-14 06:22:02,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71646ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:22:02, skipping insertion in model container [2024-10-14 06:22:02,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:22:02" (3/3) ... [2024-10-14 06:22:02,724 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_traffic_light_example.c [2024-10-14 06:22:02,742 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 06:22:02,743 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 06:22:02,805 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 06:22:02,812 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;@4bcfb132, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 06:22:02,813 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 06:22:02,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 49 states have (on average 1.510204081632653) internal successors, (74), 50 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:22:02,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-14 06:22:02,826 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:22:02,827 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:22:02,828 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:22:02,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:22:02,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1031973157, now seen corresponding path program 1 times [2024-10-14 06:22:02,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:22:02,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099063512] [2024-10-14 06:22:02,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:22:02,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:22:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:22:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:22:03,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:22:03,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099063512] [2024-10-14 06:22:03,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099063512] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:22:03,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:22:03,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:22:03,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350623184] [2024-10-14 06:22:03,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:22:03,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 06:22:03,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:22:03,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 06:22:03,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:22:03,615 INFO L87 Difference]: Start difference. First operand has 51 states, 49 states have (on average 1.510204081632653) internal successors, (74), 50 states have internal predecessors, (74), 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) [2024-10-14 06:22:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:22:03,678 INFO L93 Difference]: Finished difference Result 94 states and 138 transitions. [2024-10-14 06:22:03,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 06:22:03,681 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 [2024-10-14 06:22:03,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:22:03,690 INFO L225 Difference]: With dead ends: 94 [2024-10-14 06:22:03,691 INFO L226 Difference]: Without dead ends: 52 [2024-10-14 06:22:03,694 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 [2024-10-14 06:22:03,701 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 06:22:03,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 06:22:03,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-10-14 06:22:03,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-10-14 06:22:03,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:22:03,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 74 transitions. [2024-10-14 06:22:03,749 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 74 transitions. Word has length 14 [2024-10-14 06:22:03,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:22:03,750 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 74 transitions. [2024-10-14 06:22:03,750 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) [2024-10-14 06:22:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 74 transitions. [2024-10-14 06:22:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-14 06:22:03,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:22:03,752 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:22:03,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 06:22:03,753 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:22:03,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:22:03,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1928092013, now seen corresponding path program 1 times [2024-10-14 06:22:03,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:22:03,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693773163] [2024-10-14 06:22:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:22:03,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:22:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:22:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:22:03,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:22:03,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693773163] [2024-10-14 06:22:03,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693773163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:22:03,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:22:03,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:22:03,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382792090] [2024-10-14 06:22:03,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:22:03,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 06:22:03,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:22:03,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 06:22:03,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:22:03,937 INFO L87 Difference]: Start difference. First operand 52 states and 74 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2024-10-14 06:22:03,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:22:03,979 INFO L93 Difference]: Finished difference Result 97 states and 138 transitions. [2024-10-14 06:22:03,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 06:22:03,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 15 [2024-10-14 06:22:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:22:03,981 INFO L225 Difference]: With dead ends: 97 [2024-10-14 06:22:03,981 INFO L226 Difference]: Without dead ends: 54 [2024-10-14 06:22:03,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:22:03,985 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 06:22:03,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 199 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 06:22:03,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-14 06:22:03,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-10-14 06:22:03,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 53 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:22:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 76 transitions. [2024-10-14 06:22:03,997 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 76 transitions. Word has length 15 [2024-10-14 06:22:03,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:22:03,998 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 76 transitions. [2024-10-14 06:22:04,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2024-10-14 06:22:04,000 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 76 transitions. [2024-10-14 06:22:04,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-14 06:22:04,001 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:22:04,001 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:22:04,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 06:22:04,001 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:22:04,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:22:04,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1456655618, now seen corresponding path program 1 times [2024-10-14 06:22:04,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:22:04,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583250649] [2024-10-14 06:22:04,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:22:04,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:22:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:22:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:22:04,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:22:04,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583250649] [2024-10-14 06:22:04,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583250649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:22:04,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:22:04,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:22:04,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391492725] [2024-10-14 06:22:04,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:22:04,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 06:22:04,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:22:04,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 06:22:04,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 06:22:04,250 INFO L87 Difference]: Start difference. First operand 54 states and 76 transitions. Second operand has 5 states, 5 states have (on average 3.2) 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) [2024-10-14 06:22:04,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:22:04,307 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2024-10-14 06:22:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 06:22:04,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) 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 [2024-10-14 06:22:04,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:22:04,309 INFO L225 Difference]: With dead ends: 99 [2024-10-14 06:22:04,309 INFO L226 Difference]: Without dead ends: 54 [2024-10-14 06:22:04,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 06:22:04,311 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 66 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 06:22:04,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 193 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 06:22:04,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-14 06:22:04,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-10-14 06:22:04,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 53 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:22:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 75 transitions. [2024-10-14 06:22:04,327 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 75 transitions. Word has length 16 [2024-10-14 06:22:04,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:22:04,327 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 75 transitions. [2024-10-14 06:22:04,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) 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) [2024-10-14 06:22:04,328 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 75 transitions. [2024-10-14 06:22:04,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-14 06:22:04,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:22:04,328 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:22:04,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 06:22:04,329 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:22:04,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:22:04,331 INFO L85 PathProgramCache]: Analyzing trace with hash -642106032, now seen corresponding path program 1 times [2024-10-14 06:22:04,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:22:04,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62319592] [2024-10-14 06:22:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:22:04,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:22:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 06:22:04,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 06:22:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 06:22:04,480 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 06:22:04,481 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 06:22:04,482 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-14 06:22:04,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 06:22:04,489 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-14 06:22:04,573 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 06:22:04,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:22:04 BoogieIcfgContainer [2024-10-14 06:22:04,583 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 06:22:04,584 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 06:22:04,584 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 06:22:04,584 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 06:22:04,585 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:22:02" (3/4) ... [2024-10-14 06:22:04,588 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-14 06:22:04,589 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 06:22:04,591 INFO L158 Benchmark]: Toolchain (without parser) took 3252.66ms. Allocated memory was 142.6MB in the beginning and 299.9MB in the end (delta: 157.3MB). Free memory was 72.3MB in the beginning and 262.9MB in the end (delta: -190.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 06:22:04,591 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 142.6MB. Free memory is still 106.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 06:22:04,592 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.49ms. Allocated memory was 142.6MB in the beginning and 195.0MB in the end (delta: 52.4MB). Free memory was 72.0MB in the beginning and 162.8MB in the end (delta: -90.8MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2024-10-14 06:22:04,594 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.72ms. Allocated memory is still 195.0MB. Free memory was 162.8MB in the beginning and 156.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-14 06:22:04,595 INFO L158 Benchmark]: Boogie Preprocessor took 73.64ms. Allocated memory is still 195.0MB. Free memory was 156.5MB in the beginning and 152.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 06:22:04,595 INFO L158 Benchmark]: RCFGBuilder took 802.42ms. Allocated memory is still 195.0MB. Free memory was 151.3MB in the beginning and 112.5MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-10-14 06:22:04,595 INFO L158 Benchmark]: TraceAbstraction took 1866.75ms. Allocated memory was 195.0MB in the beginning and 299.9MB in the end (delta: 104.9MB). Free memory was 112.5MB in the beginning and 262.9MB in the end (delta: -150.4MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2024-10-14 06:22:04,596 INFO L158 Benchmark]: Witness Printer took 5.87ms. Allocated memory is still 299.9MB. Free memory is still 262.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 06:22:04,599 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 142.6MB. Free memory is still 106.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 425.49ms. Allocated memory was 142.6MB in the beginning and 195.0MB in the end (delta: 52.4MB). Free memory was 72.0MB in the beginning and 162.8MB in the end (delta: -90.8MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.72ms. Allocated memory is still 195.0MB. Free memory was 162.8MB in the beginning and 156.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.64ms. Allocated memory is still 195.0MB. Free memory was 156.5MB in the beginning and 152.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 802.42ms. Allocated memory is still 195.0MB. Free memory was 151.3MB in the beginning and 112.5MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1866.75ms. Allocated memory was 195.0MB in the beginning and 299.9MB in the end (delta: 104.9MB). Free memory was 112.5MB in the beginning and 262.9MB in the end (delta: -150.4MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. * Witness Printer took 5.87ms. Allocated memory is still 299.9MB. Free memory is still 262.9MB. There was no memory consumed. 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 75. 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 - 8); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (8 - 1); [L32] const SORT_16 mask_SORT_16 = (SORT_16)-1 >> (sizeof(SORT_16) * 8 - 2); [L33] const SORT_16 msb_SORT_16 = (SORT_16)1 << (2 - 1); [L35] const SORT_44 mask_SORT_44 = (SORT_44)-1 >> (sizeof(SORT_44) * 8 - 32); [L36] const SORT_44 msb_SORT_44 = (SORT_44)1 << (32 - 1); [L38] const SORT_4 var_5 = 0; [L39] const SORT_4 var_8 = 255; [L40] const SORT_1 var_12 = 1; [L41] const SORT_16 var_17 = 0; [L42] const SORT_4 var_21 = 1; [L43] const SORT_4 var_23 = 63; [L44] const SORT_4 var_29 = 7; [L45] const SORT_16 var_35 = 2; [L46] const SORT_16 var_38 = 1; [L47] const SORT_44 var_45 = 0; [L48] const SORT_44 var_46 = 1; [L49] const SORT_44 var_52 = 2; [L51] SORT_1 input_2; [L52] SORT_1 input_3; [L54] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_16=3, mask_SORT_1=1, mask_SORT_4=255, var_12=1, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255] [L54] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L55] EXPR __VERIFIER_nondet_uchar() & mask_SORT_16 VAL [mask_SORT_16=3, mask_SORT_1=1, mask_SORT_4=255, var_12=1, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255] [L55] SORT_16 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_16; [L57] SORT_4 init_7_arg_1 = var_5; [L58] state_6 = init_7_arg_1 [L59] SORT_16 init_19_arg_1 = var_17; [L60] state_18 = init_19_arg_1 VAL [mask_SORT_16=3, mask_SORT_1=1, mask_SORT_4=255, state_18=0, state_6=0, var_12=1, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255] [L63] input_2 = __VERIFIER_nondet_uchar() [L64] input_3 = __VERIFIER_nondet_uchar() [L65] EXPR input_3 & mask_SORT_1 VAL [mask_SORT_16=3, mask_SORT_1=1, mask_SORT_4=255, state_18=0, state_6=0, var_12=1, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255] [L65] input_3 = input_3 & mask_SORT_1 [L68] SORT_4 var_9_arg_0 = state_6; [L69] SORT_4 var_9_arg_1 = var_8; [L70] SORT_1 var_9 = var_9_arg_0 != var_9_arg_1; [L71] SORT_1 var_13_arg_0 = var_9; [L72] SORT_1 var_13 = ~var_13_arg_0; [L73] SORT_1 var_14_arg_0 = var_12; [L74] SORT_1 var_14_arg_1 = var_13; VAL [input_3=0, mask_SORT_16=3, mask_SORT_1=1, mask_SORT_4=255, state_18=0, state_6=0, var_12=1, var_14_arg_0=1, var_14_arg_1=-2, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255] [L75] EXPR var_14_arg_0 & var_14_arg_1 VAL [input_3=0, mask_SORT_16=3, mask_SORT_1=1, mask_SORT_4=255, state_18=0, state_6=0, var_12=1, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255] [L75] SORT_1 var_14 = var_14_arg_0 & var_14_arg_1; [L76] EXPR var_14 & mask_SORT_1 VAL [input_3=0, mask_SORT_16=3, mask_SORT_1=1, mask_SORT_4=255, state_18=0, state_6=0, var_12=1, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255] [L76] var_14 = var_14 & mask_SORT_1 [L77] SORT_1 bad_15_arg_0 = var_14; [L78] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 594 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 391 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 203 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 [2024-10-14 06:22:04,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.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 54eceae7382bc15f3f6868c637e60b7eb166af5d1c4b040a6f157b03b87c995c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 06:22:07,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 06:22:07,244 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-10-14 06:22:07,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 06:22:07,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 06:22:07,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 06:22:07,288 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 06:22:07,288 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 06:22:07,289 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 06:22:07,290 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 06:22:07,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 06:22:07,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 06:22:07,292 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 06:22:07,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 06:22:07,292 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 06:22:07,294 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 06:22:07,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 06:22:07,295 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 06:22:07,295 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 06:22:07,296 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 06:22:07,296 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 06:22:07,300 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 06:22:07,300 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 06:22:07,300 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 06:22:07,300 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 06:22:07,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 06:22:07,301 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 06:22:07,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 06:22:07,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 06:22:07,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 06:22:07,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 06:22:07,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 06:22:07,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 06:22:07,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 06:22:07,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 06:22:07,303 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 06:22:07,303 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 06:22:07,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 06:22:07,303 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 06:22:07,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 06:22:07,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 06:22:07,305 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 06:22:07,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54eceae7382bc15f3f6868c637e60b7eb166af5d1c4b040a6f157b03b87c995c [2024-10-14 06:22:07,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 06:22:07,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 06:22:07,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 06:22:07,743 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 06:22:07,744 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 06:22:07,746 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c [2024-10-14 06:22:09,559 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 06:22:09,768 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 06:22:09,769 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c [2024-10-14 06:22:09,778 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4adfa9c0b/62eb515c3669447e83e4369026cf5ec3/FLAG5e9d665a3 [2024-10-14 06:22:09,799 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4adfa9c0b/62eb515c3669447e83e4369026cf5ec3 [2024-10-14 06:22:09,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 06:22:09,803 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 06:22:09,806 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 06:22:09,806 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 06:22:09,811 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 06:22:09,812 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:22:09" (1/1) ... [2024-10-14 06:22:09,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75244f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:09, skipping insertion in model container [2024-10-14 06:22:09,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:22:09" (1/1) ... [2024-10-14 06:22:09,845 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 06:22:10,026 WARN L248 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.h_traffic_light_example.c[1263,1276] [2024-10-14 06:22:10,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 06:22:10,141 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 06:22:10,157 WARN L248 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.h_traffic_light_example.c[1263,1276] [2024-10-14 06:22:10,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 06:22:10,231 INFO L204 MainTranslator]: Completed translation [2024-10-14 06:22:10,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:10 WrapperNode [2024-10-14 06:22:10,231 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 06:22:10,233 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 06:22:10,234 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 06:22:10,234 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 06:22:10,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:10" (1/1) ... [2024-10-14 06:22:10,261 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:10" (1/1) ... [2024-10-14 06:22:10,300 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 190 [2024-10-14 06:22:10,304 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 06:22:10,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 06:22:10,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 06:22:10,305 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 06:22:10,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:10" (1/1) ... [2024-10-14 06:22:10,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:10" (1/1) ... [2024-10-14 06:22:10,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:10" (1/1) ... [2024-10-14 06:22:10,343 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]. [2024-10-14 06:22:10,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:10" (1/1) ... [2024-10-14 06:22:10,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:10" (1/1) ... [2024-10-14 06:22:10,357 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:10" (1/1) ... [2024-10-14 06:22:10,365 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:10" (1/1) ... [2024-10-14 06:22:10,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:10" (1/1) ... [2024-10-14 06:22:10,368 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:10" (1/1) ... [2024-10-14 06:22:10,375 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 06:22:10,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 06:22:10,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 06:22:10,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 06:22:10,382 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:10" (1/1) ... [2024-10-14 06:22:10,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 06:22:10,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 06:22:10,418 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) [2024-10-14 06:22:10,425 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 [2024-10-14 06:22:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 06:22:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 06:22:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 06:22:10,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 06:22:10,563 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 06:22:10,565 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 06:22:10,834 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-10-14 06:22:10,834 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 06:22:10,901 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 06:22:10,901 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 06:22:10,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:22:10 BoogieIcfgContainer [2024-10-14 06:22:10,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 06:22:10,908 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 06:22:10,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 06:22:10,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 06:22:10,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:22:09" (1/3) ... [2024-10-14 06:22:10,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268c54e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:22:10, skipping insertion in model container [2024-10-14 06:22:10,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:10" (2/3) ... [2024-10-14 06:22:10,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268c54e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:22:10, skipping insertion in model container [2024-10-14 06:22:10,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:22:10" (3/3) ... [2024-10-14 06:22:10,923 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_traffic_light_example.c [2024-10-14 06:22:10,946 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 06:22:10,947 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 06:22:11,025 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 06:22:11,034 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;@26cbafef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 06:22:11,035 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 06:22:11,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:22:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-14 06:22:11,047 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:22:11,047 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-14 06:22:11,049 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:22:11,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:22:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1614770, now seen corresponding path program 1 times [2024-10-14 06:22:11,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 06:22:11,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368645589] [2024-10-14 06:22:11,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:22:11,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 06:22:11,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 06:22:11,078 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) [2024-10-14 06:22:11,089 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 [2024-10-14 06:22:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:22:11,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 06:22:11,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 06:22:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:22:11,457 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 06:22:11,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 06:22:11,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368645589] [2024-10-14 06:22:11,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368645589] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:22:11,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:22:11,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 06:22:11,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423608373] [2024-10-14 06:22:11,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:22:11,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 06:22:11,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 06:22:11,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 06:22:11,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:22:11,502 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:22:11,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:22:11,557 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2024-10-14 06:22:11,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 06:22:11,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-10-14 06:22:11,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:22:11,568 INFO L225 Difference]: With dead ends: 15 [2024-10-14 06:22:11,569 INFO L226 Difference]: Without dead ends: 9 [2024-10-14 06:22:11,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 06:22:11,576 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 06:22:11,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 06:22:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-10-14 06:22:11,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2024-10-14 06:22:11,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:22:11,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2024-10-14 06:22:11,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2024-10-14 06:22:11,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:22:11,610 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2024-10-14 06:22:11,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 06:22:11,610 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2024-10-14 06:22:11,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 06:22:11,611 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:22:11,611 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-14 06:22:11,616 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 (2)] Forceful destruction successful, exit code 0 [2024-10-14 06:22:11,814 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 [2024-10-14 06:22:11,815 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:22:11,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:22:11,816 INFO L85 PathProgramCache]: Analyzing trace with hash 865745430, now seen corresponding path program 1 times [2024-10-14 06:22:11,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 06:22:11,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364101752] [2024-10-14 06:22:11,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:22:11,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 06:22:11,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 06:22:11,821 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) [2024-10-14 06:22:11,823 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 [2024-10-14 06:22:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:22:11,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-14 06:22:11,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 06:22:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:22:12,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 06:23:17,318 WARN L286 SmtUtils]: Spent 48.79s on a formula simplification that was a NOOP. DAG size: 217 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)