./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/hard-u_valuebound1.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 2205701c87619eed0a8a76ebf684289d4e97e42556aa5e531d0e97f394ad4619 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 14:34:54,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 14:34:54,242 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 14:34:54,247 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 14:34:54,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 14:34:54,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 14:34:54,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 14:34:54,275 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 14:34:54,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 14:34:54,276 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 14:34:54,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 14:34:54,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 14:34:54,278 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 14:34:54,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 14:34:54,280 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 14:34:54,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 14:34:54,280 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 14:34:54,281 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 14:34:54,281 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 14:34:54,281 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 14:34:54,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 14:34:54,282 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 14:34:54,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 14:34:54,284 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 14:34:54,284 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 14:34:54,285 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 14:34:54,285 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 14:34:54,285 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 14:34:54,286 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 14:34:54,286 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 14:34:54,286 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 14:34:54,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 14:34:54,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:34:54,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 14:34:54,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 14:34:54,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 14:34:54,288 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 14:34:54,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 14:34:54,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 14:34:54,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 14:34:54,289 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 14:34:54,291 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 14:34:54,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2205701c87619eed0a8a76ebf684289d4e97e42556aa5e531d0e97f394ad4619 [2024-11-08 14:34:54,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 14:34:54,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 14:34:54,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 14:34:54,569 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 14:34:54,569 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 14:34:54,570 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound1.c [2024-11-08 14:34:55,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 14:34:56,139 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 14:34:56,140 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound1.c [2024-11-08 14:34:56,148 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75f4935dc/18fa36dd17a747f59fc0ecd903efe752/FLAG6e42b2ba0 [2024-11-08 14:34:56,162 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75f4935dc/18fa36dd17a747f59fc0ecd903efe752 [2024-11-08 14:34:56,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 14:34:56,166 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 14:34:56,167 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 14:34:56,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 14:34:56,172 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 14:34:56,172 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:34:56" (1/1) ... [2024-11-08 14:34:56,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27aaa93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56, skipping insertion in model container [2024-11-08 14:34:56,173 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:34:56" (1/1) ... [2024-11-08 14:34:56,205 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 14:34:56,383 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/hard-u_valuebound1.c[537,550] [2024-11-08 14:34:56,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:34:56,440 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 14:34:56,454 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/hard-u_valuebound1.c[537,550] [2024-11-08 14:34:56,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:34:56,485 INFO L204 MainTranslator]: Completed translation [2024-11-08 14:34:56,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56 WrapperNode [2024-11-08 14:34:56,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 14:34:56,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 14:34:56,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 14:34:56,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 14:34:56,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56" (1/1) ... [2024-11-08 14:34:56,502 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56" (1/1) ... [2024-11-08 14:34:56,520 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2024-11-08 14:34:56,521 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 14:34:56,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 14:34:56,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 14:34:56,522 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 14:34:56,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56" (1/1) ... [2024-11-08 14:34:56,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56" (1/1) ... [2024-11-08 14:34:56,539 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56" (1/1) ... [2024-11-08 14:34:56,553 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]. [2024-11-08 14:34:56,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56" (1/1) ... [2024-11-08 14:34:56,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56" (1/1) ... [2024-11-08 14:34:56,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56" (1/1) ... [2024-11-08 14:34:56,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56" (1/1) ... [2024-11-08 14:34:56,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56" (1/1) ... [2024-11-08 14:34:56,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56" (1/1) ... [2024-11-08 14:34:56,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 14:34:56,574 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 14:34:56,574 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 14:34:56,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 14:34:56,575 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56" (1/1) ... [2024-11-08 14:34:56,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:34:56,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:34:56,617 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) [2024-11-08 14:34:56,623 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 [2024-11-08 14:34:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 14:34:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 14:34:56,669 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 14:34:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 14:34:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 14:34:56,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 14:34:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 14:34:56,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 14:34:56,723 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 14:34:56,724 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 14:34:56,858 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-08 14:34:56,859 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 14:34:56,870 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 14:34:56,870 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 14:34:56,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:34:56 BoogieIcfgContainer [2024-11-08 14:34:56,871 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 14:34:56,873 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 14:34:56,873 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 14:34:56,877 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 14:34:56,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:34:56" (1/3) ... [2024-11-08 14:34:56,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b37b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:34:56, skipping insertion in model container [2024-11-08 14:34:56,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:34:56" (2/3) ... [2024-11-08 14:34:56,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b37b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:34:56, skipping insertion in model container [2024-11-08 14:34:56,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:34:56" (3/3) ... [2024-11-08 14:34:56,884 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound1.c [2024-11-08 14:34:56,901 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 14:34:56,902 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 14:34:56,951 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 14:34:56,957 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;@313de705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 14:34:56,958 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 14:34:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-08 14:34:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-08 14:34:56,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:34:56,970 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:34:56,970 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:34:56,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:34:56,975 INFO L85 PathProgramCache]: Analyzing trace with hash -487550744, now seen corresponding path program 1 times [2024-11-08 14:34:56,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:34:56,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756131346] [2024-11-08 14:34:56,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:34:56,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:34:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:57,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:34:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:57,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:34:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:57,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:34:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:57,145 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 14:34:57,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:34:57,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756131346] [2024-11-08 14:34:57,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756131346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:34:57,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:34:57,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 14:34:57,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613292350] [2024-11-08 14:34:57,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:34:57,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 14:34:57,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:34:57,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 14:34:57,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:34:57,172 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 14:34:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:34:57,188 INFO L93 Difference]: Finished difference Result 63 states and 104 transitions. [2024-11-08 14:34:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 14:34:57,190 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-11-08 14:34:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:34:57,195 INFO L225 Difference]: With dead ends: 63 [2024-11-08 14:34:57,196 INFO L226 Difference]: Without dead ends: 29 [2024-11-08 14:34:57,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:34:57,202 INFO L432 NwaCegarLoop]: 43 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, 43 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 [2024-11-08 14:34:57,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:34:57,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-08 14:34:57,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-08 14:34:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 14:34:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2024-11-08 14:34:57,233 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2024-11-08 14:34:57,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:34:57,234 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2024-11-08 14:34:57,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 14:34:57,234 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2024-11-08 14:34:57,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-08 14:34:57,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:34:57,238 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:34:57,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 14:34:57,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:34:57,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:34:57,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1636258074, now seen corresponding path program 1 times [2024-11-08 14:34:57,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:34:57,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198334652] [2024-11-08 14:34:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:34:57,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:34:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:57,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:34:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:57,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:34:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:57,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:34:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 14:34:57,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:34:57,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198334652] [2024-11-08 14:34:57,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198334652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:34:57,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:34:57,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:34:57,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646080708] [2024-11-08 14:34:57,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:34:57,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:34:57,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:34:57,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:34:57,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:34:57,592 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (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) [2024-11-08 14:34:57,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:34:57,685 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2024-11-08 14:34:57,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:34:57,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (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 24 [2024-11-08 14:34:57,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:34:57,688 INFO L225 Difference]: With dead ends: 42 [2024-11-08 14:34:57,688 INFO L226 Difference]: Without dead ends: 40 [2024-11-08 14:34:57,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:34:57,690 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 9 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:34:57,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 126 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:34:57,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-08 14:34:57,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-11-08 14:34:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 14:34:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-11-08 14:34:57,709 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 24 [2024-11-08 14:34:57,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:34:57,709 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-11-08 14:34:57,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (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) [2024-11-08 14:34:57,710 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-08 14:34:57,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 14:34:57,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:34:57,711 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:34:57,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 14:34:57,712 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:34:57,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:34:57,713 INFO L85 PathProgramCache]: Analyzing trace with hash 906849917, now seen corresponding path program 1 times [2024-11-08 14:34:57,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:34:57,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620740952] [2024-11-08 14:34:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:34:57,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:34:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:58,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:34:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:58,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:34:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:58,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:34:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:58,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 14:34:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 14:34:58,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:34:58,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620740952] [2024-11-08 14:34:58,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620740952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:34:58,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:34:58,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:34:58,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124778604] [2024-11-08 14:34:58,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:34:58,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:34:58,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:34:58,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:34:58,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:34:58,120 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 14:34:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:34:58,249 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2024-11-08 14:34:58,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:34:58,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-08 14:34:58,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:34:58,251 INFO L225 Difference]: With dead ends: 46 [2024-11-08 14:34:58,251 INFO L226 Difference]: Without dead ends: 44 [2024-11-08 14:34:58,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:34:58,252 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 9 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:34:58,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 123 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:34:58,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-08 14:34:58,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-11-08 14:34:58,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 14:34:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2024-11-08 14:34:58,268 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2024-11-08 14:34:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:34:58,270 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2024-11-08 14:34:58,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 14:34:58,270 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2024-11-08 14:34:58,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-08 14:34:58,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:34:58,272 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:34:58,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 14:34:58,272 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:34:58,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:34:58,273 INFO L85 PathProgramCache]: Analyzing trace with hash 710995206, now seen corresponding path program 1 times [2024-11-08 14:34:58,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:34:58,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102073811] [2024-11-08 14:34:58,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:34:58,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:34:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:34:58,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390558184] [2024-11-08 14:34:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:34:58,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:34:58,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:34:58,315 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) [2024-11-08 14:34:58,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 14:34:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:58,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 14:34:58,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:34:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 14:34:58,585 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:34:58,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:34:58,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102073811] [2024-11-08 14:34:58,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:34:58,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390558184] [2024-11-08 14:34:58,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390558184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:34:58,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:34:58,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 14:34:58,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448772754] [2024-11-08 14:34:58,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:34:58,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 14:34:58,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:34:58,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 14:34:58,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-08 14:34:58,589 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-08 14:34:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:34:58,889 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2024-11-08 14:34:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 14:34:58,889 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 34 [2024-11-08 14:34:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:34:58,890 INFO L225 Difference]: With dead ends: 63 [2024-11-08 14:34:58,891 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 14:34:58,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:34:58,893 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:34:58,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 169 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:34:58,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 14:34:58,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-08 14:34:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-08 14:34:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2024-11-08 14:34:58,908 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 34 [2024-11-08 14:34:58,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:34:58,909 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2024-11-08 14:34:58,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-08 14:34:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2024-11-08 14:34:58,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 14:34:58,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:34:58,911 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:34:58,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 14:34:59,115 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 [2024-11-08 14:34:59,116 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:34:59,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:34:59,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1829555286, now seen corresponding path program 1 times [2024-11-08 14:34:59,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:34:59,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074366648] [2024-11-08 14:34:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:34:59,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:34:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:34:59,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945893535] [2024-11-08 14:34:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:34:59,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:34:59,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:34:59,153 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) [2024-11-08 14:34:59,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 14:34:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:34:59,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 14:34:59,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:34:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 14:34:59,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:35:00,358 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 14:35:00,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:35:00,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074366648] [2024-11-08 14:35:00,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:35:00,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945893535] [2024-11-08 14:35:00,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945893535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:35:00,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:35:00,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 17 [2024-11-08 14:35:00,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059196256] [2024-11-08 14:35:00,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:35:00,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 14:35:00,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:35:00,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 14:35:00,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-08 14:35:00,365 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-08 14:35:01,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:35:01,759 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2024-11-08 14:35:01,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 14:35:01,760 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) Word has length 41 [2024-11-08 14:35:01,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:35:01,762 INFO L225 Difference]: With dead ends: 68 [2024-11-08 14:35:01,762 INFO L226 Difference]: Without dead ends: 60 [2024-11-08 14:35:01,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2024-11-08 14:35:01,764 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:35:01,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 157 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 14:35:01,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-08 14:35:01,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-08 14:35:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 39 states have internal predecessors, (41), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-08 14:35:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2024-11-08 14:35:01,779 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 41 [2024-11-08 14:35:01,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:35:01,780 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2024-11-08 14:35:01,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-08 14:35:01,780 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2024-11-08 14:35:01,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 14:35:01,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:35:01,781 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:35:01,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 14:35:01,981 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 [2024-11-08 14:35:01,982 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:35:01,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:35:01,983 INFO L85 PathProgramCache]: Analyzing trace with hash 105343995, now seen corresponding path program 1 times [2024-11-08 14:35:01,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:35:01,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11913774] [2024-11-08 14:35:01,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:35:01,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:35:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:35:02,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356896519] [2024-11-08 14:35:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:35:02,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:35:02,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:35:02,017 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) [2024-11-08 14:35:02,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 14:35:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:02,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 14:35:02,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:35:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 14:35:02,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:35:03,191 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 14:35:03,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:35:03,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11913774] [2024-11-08 14:35:03,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:35:03,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356896519] [2024-11-08 14:35:03,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356896519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:35:03,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:35:03,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 17 [2024-11-08 14:35:03,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117969711] [2024-11-08 14:35:03,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:35:03,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 14:35:03,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:35:03,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 14:35:03,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-08 14:35:03,198 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 17 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-08 14:35:07,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-08 14:35:11,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-08 14:35:15,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-08 14:35:16,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:35:16,376 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2024-11-08 14:35:16,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 14:35:16,376 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 5 states have call successors, (16) Word has length 51 [2024-11-08 14:35:16,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:35:16,378 INFO L225 Difference]: With dead ends: 87 [2024-11-08 14:35:16,378 INFO L226 Difference]: Without dead ends: 79 [2024-11-08 14:35:16,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-11-08 14:35:16,379 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:35:16,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 235 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 251 Invalid, 2 Unknown, 0 Unchecked, 13.1s Time] [2024-11-08 14:35:16,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-08 14:35:16,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-08 14:35:16,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 47 states have (on average 1.127659574468085) internal successors, (53), 51 states have internal predecessors, (53), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-08 14:35:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2024-11-08 14:35:16,406 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 51 [2024-11-08 14:35:16,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:35:16,407 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2024-11-08 14:35:16,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-08 14:35:16,407 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2024-11-08 14:35:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-08 14:35:16,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:35:16,408 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:35:16,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 14:35:16,609 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 [2024-11-08 14:35:16,609 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:35:16,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:35:16,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1754894755, now seen corresponding path program 1 times [2024-11-08 14:35:16,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:35:16,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105324457] [2024-11-08 14:35:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:35:16,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:35:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:35:16,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555190201] [2024-11-08 14:35:16,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:35:16,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:35:16,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:35:16,673 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) [2024-11-08 14:35:16,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 14:35:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:16,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 14:35:16,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:35:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 33 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-08 14:35:17,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:35:19,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:35:19,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105324457] [2024-11-08 14:35:19,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:35:19,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555190201] [2024-11-08 14:35:19,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555190201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:35:19,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:35:19,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-08 14:35:19,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960258050] [2024-11-08 14:35:19,931 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 14:35:19,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 14:35:19,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:35:19,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 14:35:19,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-08 14:35:19,933 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-08 14:35:20,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:35:20,260 INFO L93 Difference]: Finished difference Result 130 states and 156 transitions. [2024-11-08 14:35:20,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 14:35:20,261 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 71 [2024-11-08 14:35:20,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:35:20,267 INFO L225 Difference]: With dead ends: 130 [2024-11-08 14:35:20,267 INFO L226 Difference]: Without dead ends: 91 [2024-11-08 14:35:20,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-11-08 14:35:20,268 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 27 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:35:20,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 211 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:35:20,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-08 14:35:20,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2024-11-08 14:35:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 58 states have internal predecessors, (61), 22 states have call successors, (22), 11 states have call predecessors, (22), 11 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-08 14:35:20,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2024-11-08 14:35:20,302 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 71 [2024-11-08 14:35:20,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:35:20,303 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2024-11-08 14:35:20,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-08 14:35:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2024-11-08 14:35:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-08 14:35:20,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:35:20,305 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:35:20,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 14:35:20,505 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 [2024-11-08 14:35:20,506 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:35:20,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:35:20,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1620227847, now seen corresponding path program 1 times [2024-11-08 14:35:20,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:35:20,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061175728] [2024-11-08 14:35:20,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:35:20,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:35:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:35:20,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910009421] [2024-11-08 14:35:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:35:20,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:35:20,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:35:20,558 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) [2024-11-08 14:35:20,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 14:35:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:20,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 14:35:20,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:35:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 36 proven. 47 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-08 14:35:21,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:35:30,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:35:30,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061175728] [2024-11-08 14:35:30,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:35:30,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910009421] [2024-11-08 14:35:30,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910009421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:35:30,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:35:30,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-08 14:35:30,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266443670] [2024-11-08 14:35:30,543 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 14:35:30,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 14:35:30,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:35:30,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 14:35:30,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=372, Unknown=2, NotChecked=0, Total=462 [2024-11-08 14:35:30,546 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-08 14:35:31,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:35:31,131 INFO L93 Difference]: Finished difference Result 108 states and 124 transitions. [2024-11-08 14:35:31,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 14:35:31,132 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 82 [2024-11-08 14:35:31,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:35:31,133 INFO L225 Difference]: With dead ends: 108 [2024-11-08 14:35:31,133 INFO L226 Difference]: Without dead ends: 80 [2024-11-08 14:35:31,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=149, Invalid=605, Unknown=2, NotChecked=0, Total=756 [2024-11-08 14:35:31,134 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 20 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:35:31,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 282 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:35:31,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-08 14:35:31,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2024-11-08 14:35:31,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 51 states have internal predecessors, (51), 18 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-08 14:35:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2024-11-08 14:35:31,149 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 82 [2024-11-08 14:35:31,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:35:31,150 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2024-11-08 14:35:31,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-08 14:35:31,150 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2024-11-08 14:35:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-08 14:35:31,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:35:31,152 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:35:31,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 14:35:31,353 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 [2024-11-08 14:35:31,353 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:35:31,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:35:31,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1086391547, now seen corresponding path program 1 times [2024-11-08 14:35:31,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:35:31,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220005656] [2024-11-08 14:35:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:35:31,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:35:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:52,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:35:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:52,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:35:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:52,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:35:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:52,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 14:35:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:52,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 14:35:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:52,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-08 14:35:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:52,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-08 14:35:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:52,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 14:35:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:52,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 14:35:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:53,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 14:35:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:53,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-08 14:35:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:53,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 14:35:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:53,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-08 14:35:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-08 14:35:53,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:35:53,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220005656] [2024-11-08 14:35:53,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220005656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:35:53,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160641317] [2024-11-08 14:35:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:35:53,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:35:53,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:35:53,095 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) [2024-11-08 14:35:53,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 14:35:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:35:53,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 14:35:53,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:35:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 39 proven. 10 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-08 14:35:53,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:35:53,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160641317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:35:53,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:35:53,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2024-11-08 14:35:53,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029258709] [2024-11-08 14:35:53,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:35:53,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 14:35:53,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:35:53,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 14:35:53,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-08 14:35:53,444 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-08 14:35:59,310 WARN L286 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 82 DAG size of output: 70 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-08 14:36:02,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.62s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 14:36:07,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 14:36:09,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 14:36:14,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:36:14,661 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2024-11-08 14:36:14,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 14:36:14,661 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) Word has length 82 [2024-11-08 14:36:14,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:36:14,662 INFO L225 Difference]: With dead ends: 94 [2024-11-08 14:36:14,663 INFO L226 Difference]: Without dead ends: 72 [2024-11-08 14:36:14,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 109 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-08 14:36:14,664 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 9 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2024-11-08 14:36:14,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 292 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 194 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2024-11-08 14:36:14,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-08 14:36:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-08 14:36:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 46 states have (on average 1.0) internal successors, (46), 46 states have internal predecessors, (46), 15 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-08 14:36:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2024-11-08 14:36:14,682 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 82 [2024-11-08 14:36:14,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:36:14,683 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2024-11-08 14:36:14,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-08 14:36:14,683 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2024-11-08 14:36:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-08 14:36:14,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:36:14,684 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:36:14,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 14:36:14,888 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 [2024-11-08 14:36:14,889 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:36:14,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:36:14,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1729716470, now seen corresponding path program 1 times [2024-11-08 14:36:14,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:36:14,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558120736] [2024-11-08 14:36:14,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:36:14,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:36:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:36:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:36:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:36:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 14:36:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 14:36:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-08 14:36:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-08 14:36:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 14:36:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 14:36:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 14:36:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-08 14:36:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 14:36:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-08 14:36:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 14:36:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-08 14:36:15,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:36:15,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558120736] [2024-11-08 14:36:15,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558120736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:36:15,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986200582] [2024-11-08 14:36:15,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:36:15,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:36:15,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:36:15,407 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:36:15,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 14:36:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:36:15,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 14:36:15,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:36:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 49 proven. 54 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-08 14:36:16,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:36:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-08 14:36:18,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986200582] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:36:18,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:36:18,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 19, 17] total 35 [2024-11-08 14:36:18,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339875526] [2024-11-08 14:36:18,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:36:18,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 14:36:18,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:36:18,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 14:36:18,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 14:36:18,332 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 35 states, 30 states have (on average 1.8) internal successors, (54), 25 states have internal predecessors, (54), 19 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 23 states have call predecessors, (39), 18 states have call successors, (39) [2024-11-08 14:36:23,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:36:23,598 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2024-11-08 14:36:23,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 14:36:23,598 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 1.8) internal successors, (54), 25 states have internal predecessors, (54), 19 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 23 states have call predecessors, (39), 18 states have call successors, (39) Word has length 87 [2024-11-08 14:36:23,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:36:23,599 INFO L225 Difference]: With dead ends: 72 [2024-11-08 14:36:23,599 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 14:36:23,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=259, Invalid=1381, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 14:36:23,600 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 14:36:23,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 461 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 14:36:23,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 14:36:23,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 14:36:23,601 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) [2024-11-08 14:36:23,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 14:36:23,602 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2024-11-08 14:36:23,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:36:23,602 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 14:36:23,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 1.8) internal successors, (54), 25 states have internal predecessors, (54), 19 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 23 states have call predecessors, (39), 18 states have call successors, (39) [2024-11-08 14:36:23,602 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 14:36:23,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 14:36:23,607 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 14:36:23,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 14:36:23,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:36:23,814 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:36:23,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-08 14:36:29,627 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 14:36:29,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 02:36:29 BoogieIcfgContainer [2024-11-08 14:36:29,653 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 14:36:29,654 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 14:36:29,654 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 14:36:29,654 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 14:36:29,654 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:34:56" (3/4) ... [2024-11-08 14:36:29,658 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 14:36:29,662 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-08 14:36:29,662 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-08 14:36:29,666 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-08 14:36:29,666 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-08 14:36:29,667 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-08 14:36:29,667 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 14:36:29,745 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-08 14:36:29,745 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-08 14:36:29,745 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 14:36:29,746 INFO L158 Benchmark]: Toolchain (without parser) took 93580.29ms. Allocated memory was 148.9MB in the beginning and 186.6MB in the end (delta: 37.7MB). Free memory was 79.6MB in the beginning and 76.5MB in the end (delta: 3.1MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2024-11-08 14:36:29,746 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 148.9MB. Free memory was 115.9MB in the beginning and 115.9MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 14:36:29,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.27ms. Allocated memory is still 148.9MB. Free memory was 79.6MB in the beginning and 116.2MB in the end (delta: -36.6MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2024-11-08 14:36:29,747 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.73ms. Allocated memory is still 148.9MB. Free memory was 116.2MB in the beginning and 114.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 14:36:29,747 INFO L158 Benchmark]: Boogie Preprocessor took 52.02ms. Allocated memory is still 148.9MB. Free memory was 114.6MB in the beginning and 113.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 14:36:29,748 INFO L158 Benchmark]: RCFGBuilder took 296.51ms. Allocated memory is still 148.9MB. Free memory was 112.5MB in the beginning and 101.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-08 14:36:29,748 INFO L158 Benchmark]: TraceAbstraction took 92779.87ms. Allocated memory was 148.9MB in the beginning and 186.6MB in the end (delta: 37.7MB). Free memory was 99.9MB in the beginning and 81.8MB in the end (delta: 18.2MB). Peak memory consumption was 94.2MB. Max. memory is 16.1GB. [2024-11-08 14:36:29,748 INFO L158 Benchmark]: Witness Printer took 91.75ms. Allocated memory is still 186.6MB. Free memory was 81.8MB in the beginning and 76.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-08 14:36:29,750 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 148.9MB. Free memory was 115.9MB in the beginning and 115.9MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.27ms. Allocated memory is still 148.9MB. Free memory was 79.6MB in the beginning and 116.2MB in the end (delta: -36.6MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.73ms. Allocated memory is still 148.9MB. Free memory was 116.2MB in the beginning and 114.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.02ms. Allocated memory is still 148.9MB. Free memory was 114.6MB in the beginning and 113.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 296.51ms. Allocated memory is still 148.9MB. Free memory was 112.5MB in the beginning and 101.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 92779.87ms. Allocated memory was 148.9MB in the beginning and 186.6MB in the end (delta: 37.7MB). Free memory was 99.9MB in the beginning and 81.8MB in the end (delta: 18.2MB). Peak memory consumption was 94.2MB. Max. memory is 16.1GB. * Witness Printer took 91.75ms. Allocated memory is still 186.6MB. Free memory was 81.8MB in the beginning and 76.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 86.9s, OverallIterations: 10, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 42.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 195 SdHoareTripleChecker+Valid, 27.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 2099 SdHoareTripleChecker+Invalid, 26.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1795 mSDsCounter, 186 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1896 IncrementalHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 186 mSolverCounterUnsat, 304 mSDtfsCounter, 1896 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 819 GetRequests, 653 SyntacticMatches, 12 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 41.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=7, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 41.4s InterpolantComputationTime, 973 NumberOfCodeBlocks, 973 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 858 ConstructedInterpolants, 0 QuantifiedInterpolants, 5519 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1003 ConjunctsInSsa, 217 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 1607/1849 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: 46]: Loop Invariant Derived loop invariant: ((((((((r <= 0) && (p == 1)) && (B == d)) && (q == 0)) && (A == r)) && (d == 1)) || ((((((d == 1) && (p == 1)) && (A == 1)) && (B == 1)) && (q == 1)) && (((long long) r + 1) == A))) || (((((((((((d + (((((unsigned long long) 4294967295 * d) + B) + r) % 4294967296)) + 1) + d) <= (((long long) 2 * B) + ((long long) 3 * r))) && (A <= 1)) && (2 == p)) && (B <= ((d / 2) + 1))) && (B == 1)) && (q == 0)) && (A == r)) && (((long long) r + 1) <= d))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((p == 1) && (A <= 1)) && (B == d)) && (q == 0)) && (A == r)) && (d == 1)) || (((((((((((d + (((((unsigned long long) 4294967295 * d) + B) + r) % 4294967296)) + 1) + d) <= (((long long) 2 * B) + ((long long) 3 * r))) && (A <= 1)) && (2 == p)) && (B <= ((d / 2) + 1))) && (B == 1)) && (q == 0)) && (A == r)) && (((long long) r + 1) <= d))) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-08 14:36:29,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE