./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.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/sqrt1-ll_unwindbound5.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 74ee724e3f951f784979d99a99eb9387abbe4e82f01cf4b5e019c1ec7f3be827 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:55:43,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:55:43,720 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:55:43,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:55:43,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:55:43,748 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:55:43,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:55:43,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:55:43,749 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:55:43,750 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:55:43,751 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:55:43,751 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:55:43,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:55:43,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:55:43,752 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:55:43,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:55:43,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:55:43,752 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:55:43,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:55:43,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:55:43,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:55:43,756 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:55:43,756 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:55:43,756 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:55:43,756 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:55:43,757 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:55:43,757 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:55:43,757 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:55:43,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:55:43,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:55:43,757 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:55:43,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:55:43,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:55:43,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:55:43,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:55:43,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:55:43,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:55:43,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:55:43,759 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:55:43,759 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:55:43,759 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:55:43,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:55:43,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74ee724e3f951f784979d99a99eb9387abbe4e82f01cf4b5e019c1ec7f3be827 [2024-11-18 13:55:43,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:55:43,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:55:43,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:55:43,982 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:55:43,982 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:55:43,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c [2024-11-18 13:55:45,197 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:55:45,360 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:55:45,360 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c [2024-11-18 13:55:45,366 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dde67ff2/9b83cfa7eb774a62a2a281d73e1683ca/FLAG41a4855d1 [2024-11-18 13:55:45,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dde67ff2/9b83cfa7eb774a62a2a281d73e1683ca [2024-11-18 13:55:45,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:55:45,380 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:55:45,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:55:45,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:55:45,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:55:45,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:55:45" (1/1) ... [2024-11-18 13:55:45,387 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b652a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45, skipping insertion in model container [2024-11-18 13:55:45,387 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:55:45" (1/1) ... [2024-11-18 13:55:45,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:55:45,544 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/sqrt1-ll_unwindbound5.c[520,533] [2024-11-18 13:55:45,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:55:45,568 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:55:45,579 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/sqrt1-ll_unwindbound5.c[520,533] [2024-11-18 13:55:45,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:55:45,612 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:55:45,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45 WrapperNode [2024-11-18 13:55:45,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:55:45,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:55:45,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:55:45,617 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:55:45,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45" (1/1) ... [2024-11-18 13:55:45,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45" (1/1) ... [2024-11-18 13:55:45,639 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2024-11-18 13:55:45,641 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:55:45,641 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:55:45,642 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:55:45,642 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:55:45,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45" (1/1) ... [2024-11-18 13:55:45,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45" (1/1) ... [2024-11-18 13:55:45,651 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45" (1/1) ... [2024-11-18 13:55:45,659 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 13:55:45,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45" (1/1) ... [2024-11-18 13:55:45,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45" (1/1) ... [2024-11-18 13:55:45,662 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45" (1/1) ... [2024-11-18 13:55:45,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45" (1/1) ... [2024-11-18 13:55:45,665 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45" (1/1) ... [2024-11-18 13:55:45,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45" (1/1) ... [2024-11-18 13:55:45,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:55:45,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:55:45,667 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:55:45,667 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:55:45,668 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45" (1/1) ... [2024-11-18 13:55:45,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:55:45,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:55:45,703 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 13:55:45,713 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 13:55:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:55:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:55:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:55:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:55:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-18 13:55:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-18 13:55:45,799 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:55:45,801 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:55:45,921 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-18 13:55:45,922 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:55:45,937 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:55:45,938 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 13:55:45,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:55:45 BoogieIcfgContainer [2024-11-18 13:55:45,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:55:45,942 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:55:45,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:55:45,945 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:55:45,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:55:45" (1/3) ... [2024-11-18 13:55:45,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503fc6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:55:45, skipping insertion in model container [2024-11-18 13:55:45,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:55:45" (2/3) ... [2024-11-18 13:55:45,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503fc6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:55:45, skipping insertion in model container [2024-11-18 13:55:45,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:55:45" (3/3) ... [2024-11-18 13:55:45,948 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound5.c [2024-11-18 13:55:45,962 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:55:45,963 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:55:46,020 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:55:46,026 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;@1a521f11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:55:46,027 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:55:46,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-18 13:55:46,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-18 13:55:46,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:55:46,036 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:55:46,037 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:55:46,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:55:46,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1821846948, now seen corresponding path program 1 times [2024-11-18 13:55:46,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:55:46,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654454962] [2024-11-18 13:55:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:55:46,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:55:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:55:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:55:46,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:55:46,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654454962] [2024-11-18 13:55:46,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654454962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:55:46,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:55:46,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 13:55:46,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994432590] [2024-11-18 13:55:46,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:55:46,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:55:46,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:55:46,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:55:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:55:46,233 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:55:46,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:55:46,251 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2024-11-18 13:55:46,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:55:46,253 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-18 13:55:46,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:55:46,258 INFO L225 Difference]: With dead ends: 40 [2024-11-18 13:55:46,259 INFO L226 Difference]: Without dead ends: 17 [2024-11-18 13:55:46,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 13:55:46,265 INFO L432 NwaCegarLoop]: 27 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, 27 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 13:55:46,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:55:46,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-18 13:55:46,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-18 13:55:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 13:55:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2024-11-18 13:55:46,297 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 7 [2024-11-18 13:55:46,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:55:46,297 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2024-11-18 13:55:46,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:55:46,298 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2024-11-18 13:55:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-18 13:55:46,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:55:46,298 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:55:46,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 13:55:46,299 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:55:46,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:55:46,300 INFO L85 PathProgramCache]: Analyzing trace with hash 178653015, now seen corresponding path program 1 times [2024-11-18 13:55:46,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:55:46,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879571543] [2024-11-18 13:55:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:55:46,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:55:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:55:46,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:55:46,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:55:46,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879571543] [2024-11-18 13:55:46,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879571543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:55:46,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:55:46,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 13:55:46,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430882521] [2024-11-18 13:55:46,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:55:46,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:55:46,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:55:46,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:55:46,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:55:46,390 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:55:46,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:55:46,410 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2024-11-18 13:55:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:55:46,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-18 13:55:46,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:55:46,413 INFO L225 Difference]: With dead ends: 28 [2024-11-18 13:55:46,413 INFO L226 Difference]: Without dead ends: 19 [2024-11-18 13:55:46,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:55:46,414 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:55:46,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:55:46,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-18 13:55:46,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-18 13:55:46,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 13:55:46,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2024-11-18 13:55:46,421 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 8 [2024-11-18 13:55:46,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:55:46,421 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-11-18 13:55:46,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:55:46,422 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2024-11-18 13:55:46,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-18 13:55:46,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:55:46,422 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:55:46,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:55:46,423 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:55:46,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:55:46,423 INFO L85 PathProgramCache]: Analyzing trace with hash 180321311, now seen corresponding path program 1 times [2024-11-18 13:55:46,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:55:46,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012697838] [2024-11-18 13:55:46,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:55:46,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:55:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:55:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:55:46,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:55:46,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012697838] [2024-11-18 13:55:46,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012697838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:55:46,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:55:46,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:55:46,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262319545] [2024-11-18 13:55:46,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:55:46,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:55:46,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:55:46,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:55:46,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:55:46,564 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:55:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:55:46,619 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2024-11-18 13:55:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:55:46,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-18 13:55:46,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:55:46,621 INFO L225 Difference]: With dead ends: 32 [2024-11-18 13:55:46,621 INFO L226 Difference]: Without dead ends: 30 [2024-11-18 13:55:46,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 13:55:46,623 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:55:46,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 67 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:55:46,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-18 13:55:46,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-11-18 13:55:46,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-18 13:55:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2024-11-18 13:55:46,642 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 8 [2024-11-18 13:55:46,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:55:46,642 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2024-11-18 13:55:46,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:55:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2024-11-18 13:55:46,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-18 13:55:46,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:55:46,643 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:55:46,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 13:55:46,644 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:55:46,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:55:46,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1242689983, now seen corresponding path program 1 times [2024-11-18 13:55:46,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:55:46,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397533886] [2024-11-18 13:55:46,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:55:46,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:55:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:55:46,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352630125] [2024-11-18 13:55:46,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:55:46,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:55:46,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:55:46,658 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 13:55:46,660 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 13:55:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:55:46,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:55:46,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:55:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:55:46,766 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:55:46,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:55:46,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397533886] [2024-11-18 13:55:46,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:55:46,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352630125] [2024-11-18 13:55:46,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352630125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:55:46,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:55:46,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:55:46,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100258142] [2024-11-18 13:55:46,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:55:46,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:55:46,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:55:46,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:55:46,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:55:46,769 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 13:55:46,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:55:46,811 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2024-11-18 13:55:46,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:55:46,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-18 13:55:46,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:55:46,812 INFO L225 Difference]: With dead ends: 36 [2024-11-18 13:55:46,812 INFO L226 Difference]: Without dead ends: 34 [2024-11-18 13:55:46,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 13:55:46,813 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:55:46,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 70 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:55:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-18 13:55:46,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-11-18 13:55:46,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-18 13:55:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2024-11-18 13:55:46,819 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 13 [2024-11-18 13:55:46,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:55:46,820 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2024-11-18 13:55:46,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 13:55:46,820 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2024-11-18 13:55:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 13:55:46,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:55:46,820 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:55:46,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:55:47,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:55:47,022 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:55:47,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:55:47,022 INFO L85 PathProgramCache]: Analyzing trace with hash 892115231, now seen corresponding path program 1 times [2024-11-18 13:55:47,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:55:47,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500963700] [2024-11-18 13:55:47,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:55:47,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:55:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:55:47,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676223912] [2024-11-18 13:55:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:55:47,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:55:47,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:55:47,038 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 13:55:47,039 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 13:55:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:55:47,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:55:47,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:55:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:55:47,121 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:55:47,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:55:47,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500963700] [2024-11-18 13:55:47,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:55:47,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676223912] [2024-11-18 13:55:47,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676223912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:55:47,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:55:47,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:55:47,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294401674] [2024-11-18 13:55:47,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:55:47,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:55:47,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:55:47,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:55:47,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:55:47,124 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 13:55:47,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:55:47,157 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2024-11-18 13:55:47,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:55:47,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-11-18 13:55:47,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:55:47,158 INFO L225 Difference]: With dead ends: 40 [2024-11-18 13:55:47,158 INFO L226 Difference]: Without dead ends: 35 [2024-11-18 13:55:47,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 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 13:55:47,159 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:55:47,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 85 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:55:47,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-18 13:55:47,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-18 13:55:47,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-18 13:55:47,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-11-18 13:55:47,165 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 18 [2024-11-18 13:55:47,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:55:47,166 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-11-18 13:55:47,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 13:55:47,166 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-11-18 13:55:47,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 13:55:47,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:55:47,167 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:55:47,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 13:55:47,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:55:47,371 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:55:47,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:55:47,372 INFO L85 PathProgramCache]: Analyzing trace with hash 259746456, now seen corresponding path program 1 times [2024-11-18 13:55:47,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:55:47,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694988911] [2024-11-18 13:55:47,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:55:47,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:55:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:55:47,466 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:55:47,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:55:47,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694988911] [2024-11-18 13:55:47,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694988911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:55:47,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067310428] [2024-11-18 13:55:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:55:47,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:55:47,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:55:47,472 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 13:55:47,473 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 13:55:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:55:47,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:55:47,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:55:47,536 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:55:47,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:55:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:55:47,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067310428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:55:47,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:55:47,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2024-11-18 13:55:47,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087597134] [2024-11-18 13:55:47,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:55:47,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:55:47,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:55:47,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:55:47,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:55:47,579 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 13:55:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:55:47,676 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2024-11-18 13:55:47,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:55:47,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 26 [2024-11-18 13:55:47,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:55:47,678 INFO L225 Difference]: With dead ends: 76 [2024-11-18 13:55:47,678 INFO L226 Difference]: Without dead ends: 67 [2024-11-18 13:55:47,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:55:47,679 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 33 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:55:47,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 79 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:55:47,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-18 13:55:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-11-18 13:55:47,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.2) internal successors, (42), 38 states have internal predecessors, (42), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-18 13:55:47,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2024-11-18 13:55:47,696 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 26 [2024-11-18 13:55:47,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:55:47,696 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2024-11-18 13:55:47,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 13:55:47,697 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2024-11-18 13:55:47,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 13:55:47,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:55:47,698 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:55:47,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 13:55:47,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:55:47,903 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:55:47,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:55:47,904 INFO L85 PathProgramCache]: Analyzing trace with hash 261414752, now seen corresponding path program 1 times [2024-11-18 13:55:47,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:55:47,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911921731] [2024-11-18 13:55:47,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:55:47,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:55:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:55:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:55:48,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:55:48,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911921731] [2024-11-18 13:55:48,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911921731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:55:48,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300930987] [2024-11-18 13:55:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:55:48,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:55:48,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:55:48,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:55:48,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 13:55:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:55:48,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 13:55:48,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:55:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:55:48,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:55:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:55:48,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300930987] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 13:55:48,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:55:48,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 9 [2024-11-18 13:55:48,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433498013] [2024-11-18 13:55:48,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:55:48,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:55:48,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:55:48,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:55:48,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:55:48,227 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 13:55:48,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:55:48,277 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2024-11-18 13:55:48,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:55:48,278 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), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2024-11-18 13:55:48,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:55:48,283 INFO L225 Difference]: With dead ends: 77 [2024-11-18 13:55:48,283 INFO L226 Difference]: Without dead ends: 75 [2024-11-18 13:55:48,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:55:48,283 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:55:48,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 58 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:55:48,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-18 13:55:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-18 13:55:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 47 states have internal predecessors, (51), 21 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-18 13:55:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2024-11-18 13:55:48,304 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 26 [2024-11-18 13:55:48,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:55:48,304 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2024-11-18 13:55:48,304 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), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 13:55:48,305 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2024-11-18 13:55:48,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 13:55:48,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:55:48,305 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:55:48,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 13:55:48,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:55:48,506 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:55:48,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:55:48,507 INFO L85 PathProgramCache]: Analyzing trace with hash -857109600, now seen corresponding path program 2 times [2024-11-18 13:55:48,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:55:48,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759923554] [2024-11-18 13:55:48,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:55:48,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:55:48,520 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:55:48,521 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-18 13:55:48,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237436576] [2024-11-18 13:55:48,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:55:48,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:55:48,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:55:48,527 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:55:48,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:55:48,568 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:55:48,569 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:55:48,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-18 13:55:48,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:55:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:55:48,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:55:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:55:48,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:55:48,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759923554] [2024-11-18 13:55:48,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:55:48,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237436576] [2024-11-18 13:55:48,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237436576] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:55:48,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:55:48,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2024-11-18 13:55:48,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918330818] [2024-11-18 13:55:48,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 13:55:48,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 13:55:48,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:55:48,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 13:55:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:55:48,826 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 13:55:48,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:55:48,975 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2024-11-18 13:55:48,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:55:48,976 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 31 [2024-11-18 13:55:48,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:55:48,978 INFO L225 Difference]: With dead ends: 86 [2024-11-18 13:55:48,978 INFO L226 Difference]: Without dead ends: 81 [2024-11-18 13:55:48,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:55:48,979 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:55:48,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 115 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:55:48,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-18 13:55:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2024-11-18 13:55:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 50 states have (on average 1.1) internal successors, (55), 52 states have internal predecessors, (55), 18 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-18 13:55:48,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2024-11-18 13:55:48,990 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 31 [2024-11-18 13:55:48,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:55:48,990 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2024-11-18 13:55:48,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 13:55:48,991 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2024-11-18 13:55:48,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-18 13:55:48,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:55:48,992 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-18 13:55:49,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 13:55:49,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:55:49,196 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:55:49,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:55:49,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1192261919, now seen corresponding path program 3 times [2024-11-18 13:55:49,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:55:49,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940168703] [2024-11-18 13:55:49,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:55:49,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:55:49,212 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-18 13:55:49,213 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-18 13:55:49,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990984979] [2024-11-18 13:55:49,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:55:49,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:55:49,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:55:49,220 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:55:49,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:55:49,262 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:55:49,262 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:55:49,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-18 13:55:49,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:55:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 33 proven. 20 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-18 13:55:49,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:55:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-18 13:55:49,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:55:49,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940168703] [2024-11-18 13:55:49,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:55:49,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990984979] [2024-11-18 13:55:49,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990984979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:55:49,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:55:49,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2024-11-18 13:55:49,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086303797] [2024-11-18 13:55:49,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 13:55:49,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 13:55:49,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:55:49,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 13:55:49,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:55:49,749 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-18 13:55:49,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:55:49,891 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2024-11-18 13:55:49,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:55:49,891 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 54 [2024-11-18 13:55:49,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:55:49,892 INFO L225 Difference]: With dead ends: 80 [2024-11-18 13:55:49,892 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 13:55:49,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:55:49,893 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:55:49,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 120 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:55:49,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 13:55:49,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 13:55:49,894 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 13:55:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 13:55:49,894 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2024-11-18 13:55:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:55:49,894 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 13:55:49,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-18 13:55:49,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 13:55:49,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 13:55:49,897 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 13:55:49,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 13:55:50,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:55:50,105 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2024-11-18 13:55:50,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 13:55:50,554 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 13:55:50,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:55:50 BoogieIcfgContainer [2024-11-18 13:55:50,569 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 13:55:50,569 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 13:55:50,569 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 13:55:50,570 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 13:55:50,570 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:55:45" (3/4) ... [2024-11-18 13:55:50,572 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 13:55:50,575 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-18 13:55:50,577 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-18 13:55:50,578 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 13:55:50,578 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 13:55:50,578 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 13:55:50,639 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 13:55:50,639 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 13:55:50,639 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 13:55:50,640 INFO L158 Benchmark]: Toolchain (without parser) took 5259.88ms. Allocated memory was 218.1MB in the beginning and 281.0MB in the end (delta: 62.9MB). Free memory was 148.8MB in the beginning and 183.3MB in the end (delta: -34.5MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2024-11-18 13:55:50,643 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 218.1MB. Free memory is still 176.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:55:50,644 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.42ms. Allocated memory is still 218.1MB. Free memory was 148.8MB in the beginning and 136.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 13:55:50,644 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.68ms. Allocated memory is still 218.1MB. Free memory was 136.2MB in the beginning and 134.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:55:50,644 INFO L158 Benchmark]: Boogie Preprocessor took 24.95ms. Allocated memory is still 218.1MB. Free memory was 134.7MB in the beginning and 133.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:55:50,644 INFO L158 Benchmark]: RCFGBuilder took 271.15ms. Allocated memory is still 218.1MB. Free memory was 132.8MB in the beginning and 121.5MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 13:55:50,644 INFO L158 Benchmark]: TraceAbstraction took 4627.45ms. Allocated memory was 218.1MB in the beginning and 281.0MB in the end (delta: 62.9MB). Free memory was 120.9MB in the beginning and 187.5MB in the end (delta: -66.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:55:50,644 INFO L158 Benchmark]: Witness Printer took 70.21ms. Allocated memory is still 281.0MB. Free memory was 187.5MB in the beginning and 183.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 13:55:50,645 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 218.1MB. Free memory is still 176.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.42ms. Allocated memory is still 218.1MB. Free memory was 148.8MB in the beginning and 136.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.68ms. Allocated memory is still 218.1MB. Free memory was 136.2MB in the beginning and 134.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.95ms. Allocated memory is still 218.1MB. Free memory was 134.7MB in the beginning and 133.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 271.15ms. Allocated memory is still 218.1MB. Free memory was 132.8MB in the beginning and 121.5MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4627.45ms. Allocated memory was 218.1MB in the beginning and 281.0MB in the end (delta: 62.9MB). Free memory was 120.9MB in the beginning and 187.5MB in the end (delta: -66.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 70.21ms. Allocated memory is still 281.0MB. Free memory was 187.5MB in the beginning and 183.3MB 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 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 9, TraceHistogramMax: 9, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 680 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 490 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 434 IncrementalHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 190 mSDtfsCounter, 434 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 266 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=8, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 359 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 365 ConstructedInterpolants, 0 QuantifiedInterpolants, 1500 SizeOfPredicates, 8 NumberOfNonLiveVariables, 492 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 451/493 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: 30]: Loop Invariant Derived loop invariant: ((t == (1 + ((__int128) 2 * a))) && (((__int128) s * 4) == ((((__int128) t * t) + ((__int128) 2 * t)) + 1))) - ProcedureContractResult [Line: 11]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: ((cond != 0) && (counter == \old(counter))) RESULT: Ultimate proved your program to be correct! [2024-11-18 13:55:50,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE