./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound50.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 240ff53ce4a5324965a3dcaa21fced56af515b108e64af6d36b0fd1ca1a710eb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:51:12,702 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:51:12,880 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:51:12,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:51:12,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:51:12,914 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:51:12,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:51:12,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:51:12,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:51:12,918 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:51:12,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:51:12,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:51:12,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:51:12,920 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:51:12,920 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:51:12,921 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:51:12,921 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:51:12,921 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:51:12,921 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:51:12,922 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:51:12,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:51:12,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:51:12,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:51:12,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:51:12,923 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:51:12,924 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:51:12,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:51:12,924 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:51:12,925 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:51:12,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:51:12,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:51:12,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:51:12,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:51:12,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:51:12,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:51:12,927 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:51:12,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:51:12,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:51:12,929 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:51:12,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:51:12,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:51:12,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:51:12,930 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 240ff53ce4a5324965a3dcaa21fced56af515b108e64af6d36b0fd1ca1a710eb [2024-11-18 13:51:13,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:51:13,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:51:13,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:51:13,228 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:51:13,228 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:51:13,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound50.c [2024-11-18 13:51:14,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:51:14,866 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:51:14,867 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound50.c [2024-11-18 13:51:14,875 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3b3cfaa/05941b769e53474eb18c75d26b44ae69/FLAGf77bf5789 [2024-11-18 13:51:15,249 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3b3cfaa/05941b769e53474eb18c75d26b44ae69 [2024-11-18 13:51:15,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:51:15,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:51:15,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:51:15,255 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:51:15,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:51:15,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:51:15" (1/1) ... [2024-11-18 13:51:15,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43116394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15, skipping insertion in model container [2024-11-18 13:51:15,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:51:15" (1/1) ... [2024-11-18 13:51:15,305 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:51:15,473 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound50.c[537,550] [2024-11-18 13:51:15,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:51:15,501 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:51:15,515 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound50.c[537,550] [2024-11-18 13:51:15,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:51:15,534 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:51:15,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15 WrapperNode [2024-11-18 13:51:15,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:51:15,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:51:15,536 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:51:15,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:51:15,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15" (1/1) ... [2024-11-18 13:51:15,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15" (1/1) ... [2024-11-18 13:51:15,568 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2024-11-18 13:51:15,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:51:15,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:51:15,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:51:15,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:51:15,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15" (1/1) ... [2024-11-18 13:51:15,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15" (1/1) ... [2024-11-18 13:51:15,579 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15" (1/1) ... [2024-11-18 13:51:15,589 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]. [2024-11-18 13:51:15,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15" (1/1) ... [2024-11-18 13:51:15,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15" (1/1) ... [2024-11-18 13:51:15,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15" (1/1) ... [2024-11-18 13:51:15,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15" (1/1) ... [2024-11-18 13:51:15,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15" (1/1) ... [2024-11-18 13:51:15,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15" (1/1) ... [2024-11-18 13:51:15,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:51:15,599 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:51:15,599 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:51:15,600 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:51:15,600 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15" (1/1) ... [2024-11-18 13:51:15,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:51:15,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:51:15,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 13:51:15,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 13:51:15,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:51:15,701 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 13:51:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 13:51:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:51:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 13:51:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:51:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:51:15,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-18 13:51:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-18 13:51:15,775 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:51:15,779 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:51:15,970 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-18 13:51:15,971 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:51:15,986 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:51:15,987 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 13:51:15,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:51:15 BoogieIcfgContainer [2024-11-18 13:51:15,987 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:51:15,991 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:51:15,991 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:51:15,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:51:15,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:51:15" (1/3) ... [2024-11-18 13:51:15,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f58ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:51:15, skipping insertion in model container [2024-11-18 13:51:15,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:51:15" (2/3) ... [2024-11-18 13:51:15,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f58ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:51:15, skipping insertion in model container [2024-11-18 13:51:15,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:51:15" (3/3) ... [2024-11-18 13:51:15,998 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_unwindbound50.c [2024-11-18 13:51:16,013 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:51:16,014 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:51:16,102 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:51:16,112 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;@364e1a75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:51:16,116 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:51:16,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:51:16,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 13:51:16,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:51:16,159 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:51:16,160 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:51:16,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:51:16,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1908356592, now seen corresponding path program 1 times [2024-11-18 13:51:16,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:51:16,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804780429] [2024-11-18 13:51:16,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:51:16,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:51:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:51:16,393 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:51:16,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:51:16,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804780429] [2024-11-18 13:51:16,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804780429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:51:16,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643456568] [2024-11-18 13:51:16,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:51:16,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:51:16,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:51:16,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:51:16,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:51:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:51:16,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 13:51:16,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:51:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:51:16,511 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:51:16,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643456568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:51:16,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:51:16,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 13:51:16,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770901671] [2024-11-18 13:51:16,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:51:16,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:51:16,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:51:16,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:51:16,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:51:16,580 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 13:51:16,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:51:16,599 INFO L93 Difference]: Finished difference Result 51 states and 74 transitions. [2024-11-18 13:51:16,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:51:16,601 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-11-18 13:51:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:51:16,608 INFO L225 Difference]: With dead ends: 51 [2024-11-18 13:51:16,609 INFO L226 Difference]: Without dead ends: 23 [2024-11-18 13:51:16,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:51:16,619 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:51:16,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:51:16,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-18 13:51:16,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-18 13:51:16,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 13:51:16,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2024-11-18 13:51:16,652 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 28 [2024-11-18 13:51:16,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:51:16,652 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2024-11-18 13:51:16,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 13:51:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2024-11-18 13:51:16,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 13:51:16,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:51:16,654 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:51:16,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 13:51:16,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 13:51:16,856 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:51:16,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:51:16,857 INFO L85 PathProgramCache]: Analyzing trace with hash 384922192, now seen corresponding path program 1 times [2024-11-18 13:51:16,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:51:16,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135118461] [2024-11-18 13:51:16,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:51:16,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:51:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:51:16,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244430917] [2024-11-18 13:51:16,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:51:16,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:51:16,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:51:16,945 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:51:16,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:51:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:51:17,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 13:51:17,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:51:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:51:17,248 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:51:17,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:51:17,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135118461] [2024-11-18 13:51:17,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:51:17,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244430917] [2024-11-18 13:51:17,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244430917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:51:17,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:51:17,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:51:17,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891829888] [2024-11-18 13:51:17,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:51:17,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:51:17,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:51:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:51:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:51:17,252 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 13:51:17,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:51:17,358 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2024-11-18 13:51:17,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:51:17,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2024-11-18 13:51:17,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:51:17,360 INFO L225 Difference]: With dead ends: 35 [2024-11-18 13:51:17,360 INFO L226 Difference]: Without dead ends: 32 [2024-11-18 13:51:17,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:51:17,362 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:51:17,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 85 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:51:17,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-18 13:51:17,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-11-18 13:51:17,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:51:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-11-18 13:51:17,378 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 29 [2024-11-18 13:51:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:51:17,379 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-11-18 13:51:17,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 13:51:17,380 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-11-18 13:51:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 13:51:17,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:51:17,381 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:51:17,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:51:17,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-18 13:51:17,584 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:51:17,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:51:17,585 INFO L85 PathProgramCache]: Analyzing trace with hash -449676311, now seen corresponding path program 1 times [2024-11-18 13:51:17,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:51:17,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397943812] [2024-11-18 13:51:17,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:51:17,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:51:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:51:17,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24350039] [2024-11-18 13:51:17,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:51:17,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:51:17,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:51:17,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:51:17,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:51:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:51:18,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 13:51:18,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:51:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:51:18,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:51:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:51:18,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:51:18,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397943812] [2024-11-18 13:51:18,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:51:18,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24350039] [2024-11-18 13:51:18,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24350039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:51:18,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:51:18,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2024-11-18 13:51:18,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676258509] [2024-11-18 13:51:18,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 13:51:18,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 13:51:18,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:51:18,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 13:51:18,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:51:18,776 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 13:51:22,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:51:22,498 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2024-11-18 13:51:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 13:51:22,500 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2024-11-18 13:51:22,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:51:22,500 INFO L225 Difference]: With dead ends: 38 [2024-11-18 13:51:22,500 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 13:51:22,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:51:22,502 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-18 13:51:22,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 126 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-18 13:51:22,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 13:51:22,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 13:51:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:51:22,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 13:51:22,506 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2024-11-18 13:51:22,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:51:22,508 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 13:51:22,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 13:51:22,508 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 13:51:22,509 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 13:51:22,513 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 13:51:22,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 13:51:22,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:51:22,717 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-18 13:51:22,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 13:51:23,293 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 13:51:23,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:51:23 BoogieIcfgContainer [2024-11-18 13:51:23,316 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 13:51:23,317 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 13:51:23,317 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 13:51:23,317 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 13:51:23,318 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:51:15" (3/4) ... [2024-11-18 13:51:23,320 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 13:51:23,324 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-18 13:51:23,325 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-18 13:51:23,328 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-18 13:51:23,329 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-18 13:51:23,329 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 13:51:23,329 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 13:51:23,329 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 13:51:23,420 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 13:51:23,421 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 13:51:23,421 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 13:51:23,422 INFO L158 Benchmark]: Toolchain (without parser) took 8168.48ms. Allocated memory was 167.8MB in the beginning and 222.3MB in the end (delta: 54.5MB). Free memory was 112.9MB in the beginning and 166.1MB in the end (delta: -53.2MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2024-11-18 13:51:23,422 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 167.8MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:51:23,422 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.24ms. Allocated memory is still 167.8MB. Free memory was 112.5MB in the beginning and 99.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 13:51:23,422 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.06ms. Allocated memory is still 167.8MB. Free memory was 99.2MB in the beginning and 97.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:51:23,422 INFO L158 Benchmark]: Boogie Preprocessor took 29.39ms. Allocated memory is still 167.8MB. Free memory was 97.5MB in the beginning and 96.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:51:23,423 INFO L158 Benchmark]: RCFGBuilder took 388.07ms. Allocated memory is still 167.8MB. Free memory was 95.8MB in the beginning and 84.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-18 13:51:23,423 INFO L158 Benchmark]: TraceAbstraction took 7325.76ms. Allocated memory was 167.8MB in the beginning and 222.3MB in the end (delta: 54.5MB). Free memory was 83.6MB in the beginning and 170.3MB in the end (delta: -86.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:51:23,423 INFO L158 Benchmark]: Witness Printer took 103.89ms. Allocated memory is still 222.3MB. Free memory was 170.3MB in the beginning and 166.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 13:51:23,426 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 167.8MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.24ms. Allocated memory is still 167.8MB. Free memory was 112.5MB in the beginning and 99.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.06ms. Allocated memory is still 167.8MB. Free memory was 99.2MB in the beginning and 97.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.39ms. Allocated memory is still 167.8MB. Free memory was 97.5MB in the beginning and 96.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 388.07ms. Allocated memory is still 167.8MB. Free memory was 95.8MB in the beginning and 84.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7325.76ms. Allocated memory was 167.8MB in the beginning and 222.3MB in the end (delta: 54.5MB). Free memory was 83.6MB in the beginning and 170.3MB in the end (delta: -86.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 103.89ms. Allocated memory is still 222.3MB. Free memory was 170.3MB in the beginning and 166.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 14]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 244 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 166 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 78 mSDtfsCounter, 99 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 413 SizeOfPredicates, 8 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 119/130 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((unsigned long long) a * b) % 2147483648) * 2) == (((__int128) ((unsigned long long) v * y) + ((unsigned long long) u * x)) % 4294967296)) - ProcedureContractResult [Line: 8]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (counter == \old(counter)) - ProcedureContractResult [Line: 11]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: ((1 <= cond) && (counter == \old(counter))) RESULT: Ultimate proved your program to be correct! [2024-11-18 13:51:23,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE