./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 275f3564868260c0f8bba92723013207b6a72ca364aead8f492ecb284c649797 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 07:39:51,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 07:39:51,801 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-01-09 07:39:51,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 07:39:51,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 07:39:51,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 07:39:51,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 07:39:51,826 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 07:39:51,826 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 07:39:51,827 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 07:39:51,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 07:39:51,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 07:39:51,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 07:39:51,827 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 07:39:51,827 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 07:39:51,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 07:39:51,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 07:39:51,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 07:39:51,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 07:39:51,827 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 07:39:51,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 07:39:51,827 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 07:39:51,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 07:39:51,828 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 07:39:51,828 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 07:39:51,828 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 07:39:51,828 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 07:39:51,828 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 07:39:51,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 07:39:51,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 07:39:51,828 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 07:39:51,828 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 07:39:51,828 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 07:39:51,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 07:39:51,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 07:39:51,828 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 07:39:51,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 07:39:51,829 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 07:39:51,829 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 07:39:51,830 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 07:39:51,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 07:39:51,830 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 07:39:51,830 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 07:39:51,830 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 07:39:51,830 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 07:39:51,830 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 275f3564868260c0f8bba92723013207b6a72ca364aead8f492ecb284c649797 [2025-01-09 07:39:52,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 07:39:52,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 07:39:52,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 07:39:52,064 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 07:39:52,064 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 07:39:52,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c [2025-01-09 07:39:53,220 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0c8ece9ca/b0cd420129e6462f97d80391219aa5ec/FLAG7b92c5f85 [2025-01-09 07:39:53,436 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 07:39:53,437 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c [2025-01-09 07:39:53,444 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0c8ece9ca/b0cd420129e6462f97d80391219aa5ec/FLAG7b92c5f85 [2025-01-09 07:39:53,782 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0c8ece9ca/b0cd420129e6462f97d80391219aa5ec [2025-01-09 07:39:53,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 07:39:53,785 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 07:39:53,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 07:39:53,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 07:39:53,789 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 07:39:53,790 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:53,791 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f713cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53, skipping insertion in model container [2025-01-09 07:39:53,791 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:53,802 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 07:39:53,902 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c[1298,1311] [2025-01-09 07:39:53,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 07:39:53,947 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 07:39:53,955 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c[1298,1311] [2025-01-09 07:39:53,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 07:39:53,984 INFO L204 MainTranslator]: Completed translation [2025-01-09 07:39:53,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53 WrapperNode [2025-01-09 07:39:53,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 07:39:53,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 07:39:53,985 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 07:39:53,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 07:39:53,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:54,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:54,029 INFO L138 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 372 [2025-01-09 07:39:54,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 07:39:54,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 07:39:54,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 07:39:54,030 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 07:39:54,036 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:54,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:54,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:54,063 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2025-01-09 07:39:54,063 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:54,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:54,070 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:54,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:54,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:54,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:54,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:54,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 07:39:54,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 07:39:54,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 07:39:54,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 07:39:54,094 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53" (1/1) ... [2025-01-09 07:39:54,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 07:39:54,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 07:39:54,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 07:39:54,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 07:39:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 07:39:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 07:39:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 07:39:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 07:39:54,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 07:39:54,201 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 07:39:54,203 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 07:39:54,659 INFO L? ?]: Removed 137 outVars from TransFormulas that were not future-live. [2025-01-09 07:39:54,660 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 07:39:54,671 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 07:39:54,672 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 07:39:54,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 07:39:54 BoogieIcfgContainer [2025-01-09 07:39:54,673 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 07:39:54,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 07:39:54,675 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 07:39:54,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 07:39:54,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 07:39:53" (1/3) ... [2025-01-09 07:39:54,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e62b437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 07:39:54, skipping insertion in model container [2025-01-09 07:39:54,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:53" (2/3) ... [2025-01-09 07:39:54,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e62b437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 07:39:54, skipping insertion in model container [2025-01-09 07:39:54,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 07:39:54" (3/3) ... [2025-01-09 07:39:54,681 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mul2.c [2025-01-09 07:39:54,691 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 07:39:54,692 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.mul2.c that has 1 procedures, 94 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 07:39:54,734 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 07:39:54,743 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;@355ec27e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 07:39:54,743 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 07:39:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 92 states have (on average 1.4891304347826086) internal successors, (137), 93 states have internal predecessors, (137), 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) [2025-01-09 07:39:54,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-09 07:39:54,750 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 07:39:54,750 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 07:39:54,751 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 07:39:54,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 07:39:54,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1096880015, now seen corresponding path program 1 times [2025-01-09 07:39:54,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 07:39:54,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437752573] [2025-01-09 07:39:54,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 07:39:54,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 07:39:54,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-09 07:39:54,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 07:39:54,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 07:39:54,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 07:39:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 07:39:55,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 07:39:55,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437752573] [2025-01-09 07:39:55,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437752573] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 07:39:55,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 07:39:55,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 07:39:55,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639678821] [2025-01-09 07:39:55,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 07:39:55,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 07:39:55,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 07:39:55,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 07:39:55,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 07:39:55,253 INFO L87 Difference]: Start difference. First operand has 94 states, 92 states have (on average 1.4891304347826086) internal successors, (137), 93 states have internal predecessors, (137), 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 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-01-09 07:39:55,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 07:39:55,292 INFO L93 Difference]: Finished difference Result 153 states and 225 transitions. [2025-01-09 07:39:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 07:39:55,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2025-01-09 07:39:55,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 07:39:55,300 INFO L225 Difference]: With dead ends: 153 [2025-01-09 07:39:55,300 INFO L226 Difference]: Without dead ends: 93 [2025-01-09 07:39:55,305 INFO L434 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 [2025-01-09 07:39:55,307 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 387 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 [2025-01-09 07:39:55,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 387 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 07:39:55,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-01-09 07:39:55,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2025-01-09 07:39:55,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4673913043478262) internal successors, (135), 92 states have internal predecessors, (135), 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) [2025-01-09 07:39:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 135 transitions. [2025-01-09 07:39:55,333 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 135 transitions. Word has length 31 [2025-01-09 07:39:55,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 07:39:55,333 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 135 transitions. [2025-01-09 07:39:55,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-01-09 07:39:55,333 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 135 transitions. [2025-01-09 07:39:55,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-09 07:39:55,334 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 07:39:55,334 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 07:39:55,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 07:39:55,335 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 07:39:55,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 07:39:55,335 INFO L85 PathProgramCache]: Analyzing trace with hash -354762581, now seen corresponding path program 1 times [2025-01-09 07:39:55,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 07:39:55,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044253105] [2025-01-09 07:39:55,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 07:39:55,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 07:39:55,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-09 07:39:55,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 07:39:55,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 07:39:55,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 07:39:55,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 07:39:55,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 07:39:55,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044253105] [2025-01-09 07:39:55,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044253105] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 07:39:55,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 07:39:55,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 07:39:55,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205552990] [2025-01-09 07:39:55,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 07:39:55,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 07:39:55,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 07:39:55,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 07:39:55,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 07:39:55,488 INFO L87 Difference]: Start difference. First operand 93 states and 135 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2025-01-09 07:39:55,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 07:39:55,527 INFO L93 Difference]: Finished difference Result 154 states and 223 transitions. [2025-01-09 07:39:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 07:39:55,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 32 [2025-01-09 07:39:55,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 07:39:55,529 INFO L225 Difference]: With dead ends: 154 [2025-01-09 07:39:55,529 INFO L226 Difference]: Without dead ends: 95 [2025-01-09 07:39:55,530 INFO L434 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 [2025-01-09 07:39:55,530 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 07:39:55,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 383 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 07:39:55,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-01-09 07:39:55,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2025-01-09 07:39:55,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 94 states have internal predecessors, (137), 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) [2025-01-09 07:39:55,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions. [2025-01-09 07:39:55,536 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 32 [2025-01-09 07:39:55,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 07:39:55,536 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 137 transitions. [2025-01-09 07:39:55,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2025-01-09 07:39:55,537 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions. [2025-01-09 07:39:55,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 07:39:55,537 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 07:39:55,537 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 07:39:55,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 07:39:55,538 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 07:39:55,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 07:39:55,538 INFO L85 PathProgramCache]: Analyzing trace with hash 789296104, now seen corresponding path program 1 times [2025-01-09 07:39:55,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 07:39:55,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386126042] [2025-01-09 07:39:55,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 07:39:55,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 07:39:55,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 07:39:55,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 07:39:55,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 07:39:55,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 07:39:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 07:39:55,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 07:39:55,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386126042] [2025-01-09 07:39:55,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386126042] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 07:39:55,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 07:39:55,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 07:39:55,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316086299] [2025-01-09 07:39:55,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 07:39:55,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 07:39:55,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 07:39:55,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 07:39:55,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 07:39:55,771 INFO L87 Difference]: Start difference. First operand 95 states and 137 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2025-01-09 07:39:55,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 07:39:55,804 INFO L93 Difference]: Finished difference Result 154 states and 222 transitions. [2025-01-09 07:39:55,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 07:39:55,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2025-01-09 07:39:55,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 07:39:55,805 INFO L225 Difference]: With dead ends: 154 [2025-01-09 07:39:55,805 INFO L226 Difference]: Without dead ends: 93 [2025-01-09 07:39:55,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-01-09 07:39:55,806 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 109 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 07:39:55,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 374 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 07:39:55,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-01-09 07:39:55,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2025-01-09 07:39:55,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4456521739130435) internal successors, (133), 92 states have internal predecessors, (133), 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) [2025-01-09 07:39:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 133 transitions. [2025-01-09 07:39:55,810 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 133 transitions. Word has length 33 [2025-01-09 07:39:55,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 07:39:55,810 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 133 transitions. [2025-01-09 07:39:55,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2025-01-09 07:39:55,810 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 133 transitions. [2025-01-09 07:39:55,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 07:39:55,811 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 07:39:55,811 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 07:39:55,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 07:39:55,811 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 07:39:55,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 07:39:55,812 INFO L85 PathProgramCache]: Analyzing trace with hash 262920718, now seen corresponding path program 1 times [2025-01-09 07:39:55,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 07:39:55,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393185756] [2025-01-09 07:39:55,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 07:39:55,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 07:39:55,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 07:39:55,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 07:39:55,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 07:39:55,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 07:39:55,845 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 07:39:55,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 07:39:55,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 07:39:55,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 07:39:55,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 07:39:55,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 07:39:55,894 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 07:39:55,894 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 07:39:55,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 07:39:55,898 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-01-09 07:39:55,923 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 07:39:55,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 07:39:55 BoogieIcfgContainer [2025-01-09 07:39:55,928 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 07:39:55,929 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 07:39:55,929 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 07:39:55,929 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 07:39:55,929 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 07:39:54" (3/4) ... [2025-01-09 07:39:55,931 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-09 07:39:55,932 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 07:39:55,932 INFO L158 Benchmark]: Toolchain (without parser) took 2146.93ms. Allocated memory is still 201.3MB. Free memory was 151.7MB in the beginning and 138.1MB in the end (delta: 13.5MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2025-01-09 07:39:55,933 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 118.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 07:39:55,933 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.68ms. Allocated memory is still 201.3MB. Free memory was 151.7MB in the beginning and 137.0MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 07:39:55,933 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.66ms. Allocated memory is still 201.3MB. Free memory was 137.0MB in the beginning and 132.1MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 07:39:55,934 INFO L158 Benchmark]: Boogie Preprocessor took 62.73ms. Allocated memory is still 201.3MB. Free memory was 132.1MB in the beginning and 128.7MB in the end (delta: 3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 07:39:55,934 INFO L158 Benchmark]: RCFGBuilder took 579.88ms. Allocated memory is still 201.3MB. Free memory was 128.7MB in the beginning and 90.9MB in the end (delta: 37.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-01-09 07:39:55,934 INFO L158 Benchmark]: TraceAbstraction took 1253.85ms. Allocated memory is still 201.3MB. Free memory was 90.3MB in the beginning and 138.2MB in the end (delta: -47.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 07:39:55,934 INFO L158 Benchmark]: Witness Printer took 3.12ms. Allocated memory is still 201.3MB. Free memory was 138.2MB in the beginning and 138.1MB in the end (delta: 30.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 07:39:55,936 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 118.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.68ms. Allocated memory is still 201.3MB. Free memory was 151.7MB in the beginning and 137.0MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.66ms. Allocated memory is still 201.3MB. Free memory was 137.0MB in the beginning and 132.1MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 62.73ms. Allocated memory is still 201.3MB. Free memory was 132.1MB in the beginning and 128.7MB in the end (delta: 3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 579.88ms. Allocated memory is still 201.3MB. Free memory was 128.7MB in the beginning and 90.9MB in the end (delta: 37.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1253.85ms. Allocated memory is still 201.3MB. Free memory was 90.3MB in the beginning and 138.2MB in the end (delta: -47.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.12ms. Allocated memory is still 201.3MB. Free memory was 138.2MB in the beginning and 138.1MB in the end (delta: 30.1kB). 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: 22]: 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 92. Possible FailurePath: [L27] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L28] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L30] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 64); [L31] const SORT_5 msb_SORT_5 = (SORT_5)1 << (64 - 1); [L33] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 128); [L34] const SORT_9 msb_SORT_9 = (SORT_9)1 << (128 - 1); [L36] const SORT_9 var_10 = 0; [L37] const SORT_1 var_18 = 1; [L38] const SORT_5 var_22 = 0; [L40] SORT_1 input_2; [L41] SORT_1 input_3; [L42] SORT_1 input_4; [L43] SORT_5 input_6; [L44] SORT_5 input_7; [L45] SORT_1 input_8; [L47] EXPR __VERIFIER_nondet_uint128() & mask_SORT_9 VAL [mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, var_10=0, var_18=1, var_22=0] [L47] SORT_9 state_11 = __VERIFIER_nondet_uint128() & mask_SORT_9; [L48] EXPR __VERIFIER_nondet_uint128() & mask_SORT_9 VAL [mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, var_10=0, var_18=1, var_22=0] [L48] SORT_9 state_13 = __VERIFIER_nondet_uint128() & mask_SORT_9; [L49] EXPR __VERIFIER_nondet_ulong() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, var_10=0, var_18=1, var_22=0] [L49] SORT_5 state_23 = __VERIFIER_nondet_ulong() & mask_SORT_5; [L50] EXPR __VERIFIER_nondet_ulong() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, var_10=0, var_18=1, var_22=0] [L50] SORT_5 state_25 = __VERIFIER_nondet_ulong() & mask_SORT_5; [L51] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, var_10=0, var_18=1, var_22=0] [L51] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L52] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, var_10=0, var_18=1, var_22=0] [L52] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L53] EXPR __VERIFIER_nondet_ulong() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, var_10=0, var_18=1, var_22=0] [L53] SORT_5 state_31 = __VERIFIER_nondet_ulong() & mask_SORT_5; [L54] EXPR __VERIFIER_nondet_ulong() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, var_10=0, var_18=1, var_22=0] [L54] SORT_5 state_33 = __VERIFIER_nondet_ulong() & mask_SORT_5; [L56] SORT_9 init_12_arg_1 = var_10; [L57] state_11 = init_12_arg_1 [L58] SORT_9 init_14_arg_1 = var_10; [L59] state_13 = init_14_arg_1 [L60] SORT_5 init_24_arg_1 = var_22; [L61] state_23 = init_24_arg_1 [L62] SORT_5 init_26_arg_1 = var_22; [L63] state_25 = init_26_arg_1 [L64] SORT_1 init_28_arg_1 = var_18; [L65] state_27 = init_28_arg_1 [L66] SORT_1 init_30_arg_1 = var_18; [L67] state_29 = init_30_arg_1 [L68] SORT_5 init_32_arg_1 = var_22; [L69] state_31 = init_32_arg_1 [L70] SORT_5 init_34_arg_1 = var_22; [L71] state_33 = init_34_arg_1 VAL [mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, state_11=0, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_18=1, var_22=0] [L74] input_2 = __VERIFIER_nondet_uchar() [L75] input_3 = __VERIFIER_nondet_uchar() [L76] EXPR input_3 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, state_11=0, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_18=1, var_22=0] [L76] input_3 = input_3 & mask_SORT_1 [L77] input_4 = __VERIFIER_nondet_uchar() [L78] EXPR input_4 & mask_SORT_1 VAL [input_3=0, mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, state_11=0, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_18=1, var_22=0] [L78] input_4 = input_4 & mask_SORT_1 [L79] input_6 = __VERIFIER_nondet_ulong() [L80] input_7 = __VERIFIER_nondet_ulong() [L81] input_8 = __VERIFIER_nondet_uchar() [L82] EXPR input_8 & mask_SORT_1 VAL [input_3=0, input_4=0, mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, state_11=0, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_18=1, var_22=0] [L82] input_8 = input_8 & mask_SORT_1 [L85] SORT_9 var_15_arg_0 = state_11; [L86] SORT_9 var_15_arg_1 = state_13; [L87] SORT_1 var_15 = var_15_arg_0 == var_15_arg_1; [L88] SORT_1 var_19_arg_0 = var_15; [L89] SORT_1 var_19 = ~var_19_arg_0; [L90] SORT_1 var_20_arg_0 = var_18; [L91] SORT_1 var_20_arg_1 = var_19; VAL [input_3=0, input_4=0, input_8=0, mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_18=1, var_20_arg_0=1, var_20_arg_1=-2, var_22=0] [L92] EXPR var_20_arg_0 & var_20_arg_1 VAL [input_3=0, input_4=0, input_8=0, mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_18=1, var_22=0] [L92] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L93] EXPR var_20 & mask_SORT_1 VAL [input_3=0, input_4=0, input_8=0, mask_SORT_1=1, mask_SORT_5=-1, mask_SORT_9=-1, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_18=1, var_22=0] [L93] var_20 = var_20 & mask_SORT_1 [L94] SORT_1 bad_21_arg_0 = var_20; [L95] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L22] COND TRUE !(cond) [L22] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 94 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 109 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 109 mSDsluCounter, 1144 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 757 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 387 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred 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, 0.7s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 170 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-09 07:39:55,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 275f3564868260c0f8bba92723013207b6a72ca364aead8f492ecb284c649797 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 07:39:57,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 07:39:57,859 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2025-01-09 07:39:57,867 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 07:39:57,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 07:39:57,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 07:39:57,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 07:39:57,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 07:39:57,893 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 07:39:57,893 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 07:39:57,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 07:39:57,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 07:39:57,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 07:39:57,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 07:39:57,893 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 07:39:57,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 07:39:57,893 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 07:39:57,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 07:39:57,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 07:39:57,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 07:39:57,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 07:39:57,893 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 07:39:57,893 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 07:39:57,894 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 07:39:57,894 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 07:39:57,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 07:39:57,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 07:39:57,895 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-09 07:39:57,895 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-09 07:39:57,895 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 07:39:57,895 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 07:39:57,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 07:39:57,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 07:39:57,895 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 275f3564868260c0f8bba92723013207b6a72ca364aead8f492ecb284c649797 [2025-01-09 07:39:58,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 07:39:58,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 07:39:58,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 07:39:58,137 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 07:39:58,138 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 07:39:58,140 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c [2025-01-09 07:39:59,293 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7e6d81e2c/9be4e09e31d6412693cb91fde81c6f2b/FLAG72261ee67 [2025-01-09 07:39:59,496 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 07:39:59,497 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c [2025-01-09 07:39:59,502 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7e6d81e2c/9be4e09e31d6412693cb91fde81c6f2b/FLAG72261ee67 [2025-01-09 07:39:59,513 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7e6d81e2c/9be4e09e31d6412693cb91fde81c6f2b [2025-01-09 07:39:59,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 07:39:59,519 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 07:39:59,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 07:39:59,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 07:39:59,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 07:39:59,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59283fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59, skipping insertion in model container [2025-01-09 07:39:59,525 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,538 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 07:39:59,651 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c[1298,1311] [2025-01-09 07:39:59,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 07:39:59,726 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 07:39:59,736 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul2.c[1298,1311] [2025-01-09 07:39:59,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 07:39:59,769 INFO L204 MainTranslator]: Completed translation [2025-01-09 07:39:59,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59 WrapperNode [2025-01-09 07:39:59,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 07:39:59,773 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 07:39:59,773 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 07:39:59,773 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 07:39:59,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,806 INFO L138 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 204 [2025-01-09 07:39:59,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 07:39:59,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 07:39:59,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 07:39:59,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 07:39:59,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,822 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,835 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2025-01-09 07:39:59,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,840 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,845 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,848 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,850 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 07:39:59,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 07:39:59,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 07:39:59,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 07:39:59,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59" (1/1) ... [2025-01-09 07:39:59,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 07:39:59,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 07:39:59,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 07:39:59,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 07:39:59,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 07:39:59,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-09 07:39:59,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-01-09 07:39:59,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 07:39:59,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 07:39:59,997 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 07:39:59,998 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 07:40:00,890 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2025-01-09 07:40:00,890 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 07:40:00,896 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 07:40:00,896 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 07:40:00,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 07:40:00 BoogieIcfgContainer [2025-01-09 07:40:00,896 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 07:40:00,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 07:40:00,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 07:40:00,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 07:40:00,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 07:39:59" (1/3) ... [2025-01-09 07:40:00,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2009651a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 07:40:00, skipping insertion in model container [2025-01-09 07:40:00,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:39:59" (2/3) ... [2025-01-09 07:40:00,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2009651a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 07:40:00, skipping insertion in model container [2025-01-09 07:40:00,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 07:40:00" (3/3) ... [2025-01-09 07:40:00,919 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mul2.c [2025-01-09 07:40:00,929 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 07:40:00,931 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.mul2.c that has 1 procedures, 10 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 07:40:00,969 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 07:40:00,978 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;@402ab73a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 07:40:00,979 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 07:40:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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) [2025-01-09 07:40:00,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-09 07:40:00,986 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 07:40:00,986 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-09 07:40:00,987 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 07:40:00,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 07:40:00,992 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2025-01-09 07:40:01,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 07:40:01,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609914137] [2025-01-09 07:40:01,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 07:40:01,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 07:40:01,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 07:40:01,003 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 07:40:01,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 07:40:01,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-09 07:40:01,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-09 07:40:01,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 07:40:01,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 07:40:01,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 07:40:01,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 07:40:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 07:40:01,323 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 07:40:01,323 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 07:40:01,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609914137] [2025-01-09 07:40:01,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609914137] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 07:40:01,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 07:40:01,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 07:40:01,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132429800] [2025-01-09 07:40:01,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 07:40:01,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 07:40:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 07:40:01,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 07:40:01,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 07:40:01,340 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2025-01-09 07:40:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 07:40:02,322 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2025-01-09 07:40:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 07:40:02,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2025-01-09 07:40:02,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 07:40:02,329 INFO L225 Difference]: With dead ends: 17 [2025-01-09 07:40:02,329 INFO L226 Difference]: Without dead ends: 9 [2025-01-09 07:40:02,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 07:40:02,332 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-09 07:40:02,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-09 07:40:02,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2025-01-09 07:40:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2025-01-09 07:40:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2025-01-09 07:40:02,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2025-01-09 07:40:02,350 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2025-01-09 07:40:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 07:40:02,351 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2025-01-09 07:40:02,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2025-01-09 07:40:02,353 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2025-01-09 07:40:02,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-09 07:40:02,353 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 07:40:02,353 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-01-09 07:40:02,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 07:40:02,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 07:40:02,555 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 07:40:02,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 07:40:02,556 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2025-01-09 07:40:02,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 07:40:02,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655674649] [2025-01-09 07:40:02,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 07:40:02,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 07:40:02,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 07:40:02,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 07:40:02,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 07:40:02,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-09 07:40:02,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-09 07:40:02,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 07:40:02,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 07:40:02,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-09 07:40:02,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 07:40:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 07:40:03,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 07:40:30,621 WARN L286 SmtUtils]: Spent 7.19s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-09 07:40:55,864 WARN L286 SmtUtils]: Spent 12.20s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-09 07:40:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 07:40:59,524 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 07:40:59,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655674649] [2025-01-09 07:40:59,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655674649] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 07:40:59,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 07:40:59,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2025-01-09 07:40:59,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002985748] [2025-01-09 07:40:59,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 07:40:59,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 07:40:59,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 07:40:59,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 07:40:59,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-01-09 07:40:59,525 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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) [2025-01-09 07:41:02,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2025-01-09 07:41:04,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2025-01-09 07:41:07,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2025-01-09 07:41:11,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.58s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2025-01-09 07:41:15,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2025-01-09 07:41:15,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 07:41:15,130 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2025-01-09 07:41:15,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 07:41:15,190 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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 8 [2025-01-09 07:41:15,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 07:41:15,190 INFO L225 Difference]: With dead ends: 14 [2025-01-09 07:41:15,190 INFO L226 Difference]: Without dead ends: 12 [2025-01-09 07:41:15,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2025-01-09 07:41:15,191 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2025-01-09 07:41:15,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2025-01-09 07:41:15,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-01-09 07:41:15,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2025-01-09 07:41:15,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2025-01-09 07:41:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2025-01-09 07:41:15,193 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2025-01-09 07:41:15,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 07:41:15,193 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2025-01-09 07:41:15,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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) [2025-01-09 07:41:15,193 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2025-01-09 07:41:15,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 07:41:15,193 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 07:41:15,194 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2025-01-09 07:41:15,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 07:41:15,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 07:41:15,394 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 07:41:15,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 07:41:15,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 2 times [2025-01-09 07:41:15,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 07:41:15,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946430173] [2025-01-09 07:41:15,395 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 07:41:15,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 07:41:15,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 07:41:15,397 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 07:41:15,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 07:41:15,460 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes.