./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/loops-crafted-1/mono-crafted_14.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 538775af36be57be36a6cd470d0ff7a3d7714753249a7d4cb9a7b907cdacda78 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:50:52,327 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:50:52,384 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:50:52,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:50:52,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:50:52,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:50:52,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:50:52,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:50:52,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:50:52,413 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:50:52,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:50:52,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:50:52,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:50:52,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:50:52,414 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:50:52,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:50:52,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:50:52,415 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:50:52,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:50:52,416 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:50:52,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:50:52,420 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:50:52,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:50:52,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:50:52,421 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:50:52,421 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:50:52,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:50:52,421 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:50:52,421 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:50:52,421 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:50:52,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:50:52,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:50:52,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:50:52,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:50:52,422 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:50:52,422 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:50:52,422 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:50:52,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:50:52,423 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:50:52,423 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:50:52,423 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:50:52,425 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:50:52,425 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 538775af36be57be36a6cd470d0ff7a3d7714753249a7d4cb9a7b907cdacda78 [2024-11-16 06:50:52,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:50:52,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:50:52,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:50:52,631 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:50:52,631 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:50:52,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/mono-crafted_14.c [2024-11-16 06:50:53,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:50:53,993 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:50:53,993 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_14.c [2024-11-16 06:50:53,998 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41ee0aaeb/ee14bec6de224049bdc6d0ae12d2d23d/FLAG2c9a59a1e [2024-11-16 06:50:54,010 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41ee0aaeb/ee14bec6de224049bdc6d0ae12d2d23d [2024-11-16 06:50:54,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:50:54,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:50:54,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:50:54,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:50:54,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:50:54,019 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:50:54" (1/1) ... [2024-11-16 06:50:54,020 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792b5d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54, skipping insertion in model container [2024-11-16 06:50:54,020 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:50:54" (1/1) ... [2024-11-16 06:50:54,034 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:50:54,162 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/loops-crafted-1/mono-crafted_14.c[319,332] [2024-11-16 06:50:54,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:50:54,184 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:50:54,192 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/loops-crafted-1/mono-crafted_14.c[319,332] [2024-11-16 06:50:54,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:50:54,210 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:50:54,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54 WrapperNode [2024-11-16 06:50:54,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:50:54,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:50:54,212 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:50:54,212 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:50:54,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54" (1/1) ... [2024-11-16 06:50:54,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54" (1/1) ... [2024-11-16 06:50:54,233 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2024-11-16 06:50:54,234 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:50:54,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:50:54,235 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:50:54,235 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:50:54,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54" (1/1) ... [2024-11-16 06:50:54,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54" (1/1) ... [2024-11-16 06:50:54,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54" (1/1) ... [2024-11-16 06:50:54,250 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]. [2024-11-16 06:50:54,250 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54" (1/1) ... [2024-11-16 06:50:54,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54" (1/1) ... [2024-11-16 06:50:54,252 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54" (1/1) ... [2024-11-16 06:50:54,253 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54" (1/1) ... [2024-11-16 06:50:54,253 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54" (1/1) ... [2024-11-16 06:50:54,254 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54" (1/1) ... [2024-11-16 06:50:54,255 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:50:54,259 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:50:54,259 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:50:54,259 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:50:54,259 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54" (1/1) ... [2024-11-16 06:50:54,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:50:54,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:54,288 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) [2024-11-16 06:50:54,292 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 [2024-11-16 06:50:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:50:54,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:50:54,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:50:54,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:50:54,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 06:50:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 06:50:54,412 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:50:54,415 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:50:54,515 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-16 06:50:54,515 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:50:54,526 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:50:54,526 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:50:54,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:50:54 BoogieIcfgContainer [2024-11-16 06:50:54,527 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:50:54,530 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:50:54,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:50:54,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:50:54,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:50:54" (1/3) ... [2024-11-16 06:50:54,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779e710b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:50:54, skipping insertion in model container [2024-11-16 06:50:54,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:54" (2/3) ... [2024-11-16 06:50:54,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779e710b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:50:54, skipping insertion in model container [2024-11-16 06:50:54,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:50:54" (3/3) ... [2024-11-16 06:50:54,536 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_14.c [2024-11-16 06:50:54,548 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:50:54,549 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:50:54,591 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:50:54,595 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;@50f636b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:50:54,596 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:50:54,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 06:50:54,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-16 06:50:54,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:54,604 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:54,604 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:54,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:54,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1472965631, now seen corresponding path program 1 times [2024-11-16 06:50:54,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:54,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618614314] [2024-11-16 06:50:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:54,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:54,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:54,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618614314] [2024-11-16 06:50:54,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618614314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:50:54,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:50:54,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:50:54,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072909354] [2024-11-16 06:50:54,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:50:54,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:50:54,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:54,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:50:54,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:50:54,737 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:54,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:54,749 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2024-11-16 06:50:54,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:50:54,750 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-16 06:50:54,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:54,754 INFO L225 Difference]: With dead ends: 36 [2024-11-16 06:50:54,755 INFO L226 Difference]: Without dead ends: 16 [2024-11-16 06:50:54,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:50:54,759 INFO L432 NwaCegarLoop]: 23 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, 23 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 [2024-11-16 06:50:54,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:54,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-16 06:50:54,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-16 06:50:54,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:50:54,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-16 06:50:54,782 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2024-11-16 06:50:54,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:54,782 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-16 06:50:54,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:54,782 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-16 06:50:54,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 06:50:54,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:54,783 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:54,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:50:54,783 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:54,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:54,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1759470816, now seen corresponding path program 1 times [2024-11-16 06:50:54,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:54,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128684615] [2024-11-16 06:50:54,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:54,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:54,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:54,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128684615] [2024-11-16 06:50:54,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128684615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:50:54,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:50:54,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:50:54,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51526253] [2024-11-16 06:50:54,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:50:54,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:50:54,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:54,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:50:54,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:50:54,842 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:54,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:54,865 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-16 06:50:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:50:54,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-16 06:50:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:54,866 INFO L225 Difference]: With dead ends: 33 [2024-11-16 06:50:54,866 INFO L226 Difference]: Without dead ends: 19 [2024-11-16 06:50:54,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:50:54,867 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:54,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:54,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-16 06:50:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-16 06:50:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:50:54,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-11-16 06:50:54,871 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 11 [2024-11-16 06:50:54,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:54,871 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-11-16 06:50:54,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:54,871 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-11-16 06:50:54,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 06:50:54,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:54,872 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:54,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:50:54,872 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:54,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:54,874 INFO L85 PathProgramCache]: Analyzing trace with hash 129186452, now seen corresponding path program 1 times [2024-11-16 06:50:54,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:54,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699837306] [2024-11-16 06:50:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:54,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:50:54,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:54,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699837306] [2024-11-16 06:50:54,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699837306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:50:54,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:50:54,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:50:54,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616855952] [2024-11-16 06:50:54,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:50:54,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:50:54,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:54,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:50:54,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:50:54,943 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:54,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:54,955 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2024-11-16 06:50:54,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:50:54,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-16 06:50:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:54,956 INFO L225 Difference]: With dead ends: 30 [2024-11-16 06:50:54,956 INFO L226 Difference]: Without dead ends: 21 [2024-11-16 06:50:54,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:50:54,957 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:54,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:54,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-16 06:50:54,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-16 06:50:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:50:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-16 06:50:54,962 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 14 [2024-11-16 06:50:54,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:54,962 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-16 06:50:54,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:54,963 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-16 06:50:54,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 06:50:54,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:54,964 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:54,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 06:50:54,964 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:54,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:54,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1055091477, now seen corresponding path program 1 times [2024-11-16 06:50:54,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:54,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072121383] [2024-11-16 06:50:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:54,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:50:55,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:55,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072121383] [2024-11-16 06:50:55,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072121383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:55,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178840288] [2024-11-16 06:50:55,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:55,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:55,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:55,039 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) [2024-11-16 06:50:55,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 06:50:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:55,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 06:50:55,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:50:55,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:50:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:50:55,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178840288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:50:55,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:50:55,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-16 06:50:55,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730289425] [2024-11-16 06:50:55,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:50:55,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 06:50:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:55,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 06:50:55,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-16 06:50:55,186 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:55,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:55,259 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-11-16 06:50:55,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:50:55,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-16 06:50:55,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:55,261 INFO L225 Difference]: With dead ends: 47 [2024-11-16 06:50:55,262 INFO L226 Difference]: Without dead ends: 31 [2024-11-16 06:50:55,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-11-16 06:50:55,263 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:55,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 65 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:55,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-16 06:50:55,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-16 06:50:55,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:50:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-16 06:50:55,269 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 16 [2024-11-16 06:50:55,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:55,269 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-16 06:50:55,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:55,269 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-16 06:50:55,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 06:50:55,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:55,270 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:55,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 06:50:55,474 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 [2024-11-16 06:50:55,475 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:55,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:55,475 INFO L85 PathProgramCache]: Analyzing trace with hash 998635650, now seen corresponding path program 1 times [2024-11-16 06:50:55,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:55,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575793178] [2024-11-16 06:50:55,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:55,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:50:55,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:55,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575793178] [2024-11-16 06:50:55,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575793178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:55,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741589776] [2024-11-16 06:50:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:55,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:55,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:55,595 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) [2024-11-16 06:50:55,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:50:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:55,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 06:50:55,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:50:55,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:50:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:50:55,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741589776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:50:55,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:50:55,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-16 06:50:55,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887463765] [2024-11-16 06:50:55,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:50:55,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 06:50:55,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:55,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 06:50:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-16 06:50:55,717 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:55,753 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2024-11-16 06:50:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:50:55,754 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-16 06:50:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:55,754 INFO L225 Difference]: With dead ends: 66 [2024-11-16 06:50:55,755 INFO L226 Difference]: Without dead ends: 43 [2024-11-16 06:50:55,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-16 06:50:55,756 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:55,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:55,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-16 06:50:55,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-16 06:50:55,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 40 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:50:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-11-16 06:50:55,760 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 27 [2024-11-16 06:50:55,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:55,761 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-11-16 06:50:55,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:55,761 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-11-16 06:50:55,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 06:50:55,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:55,762 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:55,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 06:50:55,966 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 [2024-11-16 06:50:55,967 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:55,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:55,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1373761662, now seen corresponding path program 2 times [2024-11-16 06:50:55,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:55,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775868397] [2024-11-16 06:50:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:55,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 63 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:50:56,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:56,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775868397] [2024-11-16 06:50:56,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775868397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:56,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102778618] [2024-11-16 06:50:56,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:50:56,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:56,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:56,151 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) [2024-11-16 06:50:56,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 06:50:56,192 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:50:56,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:50:56,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 06:50:56,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 63 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:50:56,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:50:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 63 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:50:56,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102778618] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:50:56,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:50:56,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-16 06:50:56,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256303381] [2024-11-16 06:50:56,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:50:56,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 06:50:56,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:56,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 06:50:56,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-16 06:50:56,360 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:56,421 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2024-11-16 06:50:56,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 06:50:56,422 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-16 06:50:56,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:56,422 INFO L225 Difference]: With dead ends: 90 [2024-11-16 06:50:56,422 INFO L226 Difference]: Without dead ends: 67 [2024-11-16 06:50:56,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-16 06:50:56,423 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:56,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:56,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-16 06:50:56,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-16 06:50:56,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 64 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:50:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2024-11-16 06:50:56,433 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 39 [2024-11-16 06:50:56,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:56,433 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2024-11-16 06:50:56,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:56,433 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2024-11-16 06:50:56,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-16 06:50:56,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:56,434 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 14, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:56,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 06:50:56,634 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 [2024-11-16 06:50:56,635 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:56,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1137622402, now seen corresponding path program 3 times [2024-11-16 06:50:56,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:56,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794585926] [2024-11-16 06:50:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:56,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 75 proven. 315 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:50:56,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:56,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794585926] [2024-11-16 06:50:56,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794585926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:56,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373989656] [2024-11-16 06:50:56,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:50:56,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:56,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:56,953 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) [2024-11-16 06:50:56,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 06:50:56,993 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 06:50:56,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:50:56,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 06:50:56,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 77 proven. 6 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-16 06:50:57,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:50:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 77 proven. 6 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-16 06:50:57,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373989656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:50:57,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:50:57,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6, 6] total 25 [2024-11-16 06:50:57,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321274629] [2024-11-16 06:50:57,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:50:57,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 06:50:57,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:57,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 06:50:57,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2024-11-16 06:50:57,230 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 25 states, 25 states have (on average 3.6) internal successors, (90), 25 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:57,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:57,459 INFO L93 Difference]: Finished difference Result 110 states and 126 transitions. [2024-11-16 06:50:57,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 06:50:57,460 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 25 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-16 06:50:57,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:57,460 INFO L225 Difference]: With dead ends: 110 [2024-11-16 06:50:57,462 INFO L226 Difference]: Without dead ends: 87 [2024-11-16 06:50:57,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=525, Invalid=1035, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 06:50:57,463 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:57,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 135 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:50:57,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-16 06:50:57,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2024-11-16 06:50:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 75 states have internal predecessors, (79), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:50:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2024-11-16 06:50:57,472 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 63 [2024-11-16 06:50:57,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:57,472 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2024-11-16 06:50:57,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 25 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:57,472 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2024-11-16 06:50:57,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 06:50:57,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:57,473 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 15, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:57,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 06:50:57,674 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 [2024-11-16 06:50:57,674 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:57,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:57,675 INFO L85 PathProgramCache]: Analyzing trace with hash 712188282, now seen corresponding path program 4 times [2024-11-16 06:50:57,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:57,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039081490] [2024-11-16 06:50:57,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:57,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 80 proven. 360 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:50:58,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:58,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039081490] [2024-11-16 06:50:58,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039081490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:58,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186840005] [2024-11-16 06:50:58,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:50:58,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:58,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:58,039 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) [2024-11-16 06:50:58,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 06:50:58,086 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:50:58,086 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:50:58,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 06:50:58,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 80 proven. 360 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:50:58,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:50:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 80 proven. 360 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:50:58,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186840005] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:50:58,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:50:58,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2024-11-16 06:50:58,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166294844] [2024-11-16 06:50:58,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:50:58,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 06:50:58,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:58,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 06:50:58,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 06:50:58,520 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 35 states, 35 states have (on average 3.257142857142857) internal successors, (114), 35 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:58,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:58,590 INFO L93 Difference]: Finished difference Result 160 states and 185 transitions. [2024-11-16 06:50:58,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-16 06:50:58,591 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.257142857142857) internal successors, (114), 35 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-16 06:50:58,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:58,592 INFO L225 Difference]: With dead ends: 160 [2024-11-16 06:50:58,592 INFO L226 Difference]: Without dead ends: 129 [2024-11-16 06:50:58,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 06:50:58,593 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:58,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:50:58,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-16 06:50:58,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-16 06:50:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.04) internal successors, (130), 126 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:50:58,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2024-11-16 06:50:58,609 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 74 [2024-11-16 06:50:58,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:58,611 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2024-11-16 06:50:58,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.257142857142857) internal successors, (114), 35 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2024-11-16 06:50:58,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-16 06:50:58,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:58,612 INFO L215 NwaCegarLoop]: trace histogram [35, 34, 32, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:58,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 06:50:58,812 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 [2024-11-16 06:50:58,813 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:58,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:58,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1011924870, now seen corresponding path program 5 times [2024-11-16 06:50:58,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:58,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39278493] [2024-11-16 06:50:58,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:58,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1793 backedges. 165 proven. 1584 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:50:59,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:59,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39278493] [2024-11-16 06:50:59,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39278493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:59,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117799791] [2024-11-16 06:50:59,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:50:59,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:59,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:59,743 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) [2024-11-16 06:50:59,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 06:50:59,821 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2024-11-16 06:50:59,821 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:50:59,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-16 06:50:59,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1793 backedges. 165 proven. 1584 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:50:59,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1793 backedges. 165 proven. 1584 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:51:01,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117799791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:01,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:01,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2024-11-16 06:51:01,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451981639] [2024-11-16 06:51:01,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:01,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-16 06:51:01,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:01,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-16 06:51:01,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2024-11-16 06:51:01,099 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand has 69 states, 69 states have (on average 3.130434782608696) internal successors, (216), 69 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:01,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:01,257 INFO L93 Difference]: Finished difference Result 262 states and 304 transitions. [2024-11-16 06:51:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-16 06:51:01,258 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.130434782608696) internal successors, (216), 69 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-11-16 06:51:01,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:01,260 INFO L225 Difference]: With dead ends: 262 [2024-11-16 06:51:01,262 INFO L226 Difference]: Without dead ends: 231 [2024-11-16 06:51:01,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2024-11-16 06:51:01,264 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:01,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:51:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-16 06:51:01,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-16 06:51:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 227 states have (on average 1.0220264317180616) internal successors, (232), 228 states have internal predecessors, (232), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:51:01,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2024-11-16 06:51:01,279 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 125 [2024-11-16 06:51:01,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:01,279 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2024-11-16 06:51:01,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.130434782608696) internal successors, (216), 69 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:01,280 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2024-11-16 06:51:01,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-16 06:51:01,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:01,282 INFO L215 NwaCegarLoop]: trace histogram [69, 68, 66, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:01,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 06:51:01,482 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 [2024-11-16 06:51:01,483 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:01,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:01,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1649799942, now seen corresponding path program 6 times [2024-11-16 06:51:01,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:01,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712191359] [2024-11-16 06:51:01,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:01,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7012 backedges. 335 proven. 6633 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:51:04,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:04,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712191359] [2024-11-16 06:51:04,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712191359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:04,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659789144] [2024-11-16 06:51:04,398 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:51:04,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:04,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:04,399 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) [2024-11-16 06:51:04,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 06:51:04,461 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-16 06:51:04,461 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:51:04,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 06:51:04,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7012 backedges. 528 proven. 7 refuted. 0 times theorem prover too weak. 6477 trivial. 0 not checked. [2024-11-16 06:51:04,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7012 backedges. 528 proven. 7 refuted. 0 times theorem prover too weak. 6477 trivial. 0 not checked. [2024-11-16 06:51:04,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659789144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:04,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:04,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 5, 5] total 75 [2024-11-16 06:51:04,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774863656] [2024-11-16 06:51:04,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:04,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-16 06:51:04,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:04,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-16 06:51:04,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 06:51:04,724 INFO L87 Difference]: Start difference. First operand 231 states and 235 transitions. Second operand has 75 states, 75 states have (on average 3.1466666666666665) internal successors, (236), 75 states have internal predecessors, (236), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:04,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:04,900 INFO L93 Difference]: Finished difference Result 277 states and 294 transitions. [2024-11-16 06:51:04,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-16 06:51:04,902 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.1466666666666665) internal successors, (236), 75 states have internal predecessors, (236), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2024-11-16 06:51:04,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:04,905 INFO L225 Difference]: With dead ends: 277 [2024-11-16 06:51:04,905 INFO L226 Difference]: Without dead ends: 246 [2024-11-16 06:51:04,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 06:51:04,907 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:04,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 185 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:51:04,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-16 06:51:04,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-16 06:51:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 242 states have (on average 1.037190082644628) internal successors, (251), 243 states have internal predecessors, (251), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:51:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 254 transitions. [2024-11-16 06:51:04,919 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 254 transitions. Word has length 227 [2024-11-16 06:51:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:04,919 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 254 transitions. [2024-11-16 06:51:04,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.1466666666666665) internal successors, (236), 75 states have internal predecessors, (236), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 254 transitions. [2024-11-16 06:51:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-16 06:51:04,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:04,922 INFO L215 NwaCegarLoop]: trace histogram [74, 73, 67, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:04,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 06:51:05,122 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 [2024-11-16 06:51:05,123 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:05,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:05,123 INFO L85 PathProgramCache]: Analyzing trace with hash 562726586, now seen corresponding path program 7 times [2024-11-16 06:51:05,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:05,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225237435] [2024-11-16 06:51:05,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:05,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8072 backedges. 1156 proven. 6834 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 06:51:07,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:07,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225237435] [2024-11-16 06:51:07,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225237435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:07,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409596729] [2024-11-16 06:51:07,888 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:51:07,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:07,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:07,889 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:51:07,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 06:51:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:07,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-11-16 06:51:08,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:08,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8072 backedges. 1156 proven. 6834 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 06:51:08,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8072 backedges. 1156 proven. 6834 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 06:51:11,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409596729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:11,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:11,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 139 [2024-11-16 06:51:11,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089301682] [2024-11-16 06:51:11,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:11,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-11-16 06:51:11,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:11,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-11-16 06:51:11,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2024-11-16 06:51:11,914 INFO L87 Difference]: Start difference. First operand 246 states and 254 transitions. Second operand has 139 states, 139 states have (on average 3.064748201438849) internal successors, (426), 139 states have internal predecessors, (426), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:12,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:12,241 INFO L93 Difference]: Finished difference Result 496 states and 581 transitions. [2024-11-16 06:51:12,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2024-11-16 06:51:12,242 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 3.064748201438849) internal successors, (426), 139 states have internal predecessors, (426), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2024-11-16 06:51:12,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:12,243 INFO L225 Difference]: With dead ends: 496 [2024-11-16 06:51:12,243 INFO L226 Difference]: Without dead ends: 453 [2024-11-16 06:51:12,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2024-11-16 06:51:12,248 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:12,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:51:12,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-16 06:51:12,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2024-11-16 06:51:12,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 449 states have (on average 1.0200445434298442) internal successors, (458), 450 states have internal predecessors, (458), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:51:12,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 461 transitions. [2024-11-16 06:51:12,262 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 461 transitions. Word has length 242 [2024-11-16 06:51:12,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:12,262 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 461 transitions. [2024-11-16 06:51:12,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 3.064748201438849) internal successors, (426), 139 states have internal predecessors, (426), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:12,262 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 461 transitions. [2024-11-16 06:51:12,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-11-16 06:51:12,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:12,266 INFO L215 NwaCegarLoop]: trace histogram [143, 142, 136, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:12,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 06:51:12,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 06:51:12,467 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:12,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:12,468 INFO L85 PathProgramCache]: Analyzing trace with hash 171168710, now seen corresponding path program 8 times [2024-11-16 06:51:12,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:12,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504583508] [2024-11-16 06:51:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:12,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:51:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 30359 backedges. 2329 proven. 27948 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 06:51:25,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:51:25,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504583508] [2024-11-16 06:51:25,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504583508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:51:25,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821130731] [2024-11-16 06:51:25,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:51:25,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:25,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:51:25,081 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:51:25,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 06:51:25,246 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:51:25,246 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:51:25,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 274 conjuncts are in the unsatisfiable core [2024-11-16 06:51:25,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:51:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 30359 backedges. 2329 proven. 27948 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 06:51:25,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:51:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 30359 backedges. 2329 proven. 27948 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 06:51:40,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821130731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:51:40,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:51:40,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139, 139] total 277 [2024-11-16 06:51:40,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407482196] [2024-11-16 06:51:40,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:51:40,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 277 states [2024-11-16 06:51:40,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:51:40,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 277 interpolants. [2024-11-16 06:51:40,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2024-11-16 06:51:40,037 INFO L87 Difference]: Start difference. First operand 453 states and 461 transitions. Second operand has 277 states, 277 states have (on average 3.032490974729242) internal successors, (840), 277 states have internal predecessors, (840), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:41,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:51:41,582 INFO L93 Difference]: Finished difference Result 910 states and 1064 transitions. [2024-11-16 06:51:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2024-11-16 06:51:41,583 INFO L78 Accepts]: Start accepts. Automaton has has 277 states, 277 states have (on average 3.032490974729242) internal successors, (840), 277 states have internal predecessors, (840), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 449 [2024-11-16 06:51:41,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:51:41,585 INFO L225 Difference]: With dead ends: 910 [2024-11-16 06:51:41,585 INFO L226 Difference]: Without dead ends: 867 [2024-11-16 06:51:41,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2024-11-16 06:51:41,588 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:51:41,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 387 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:51:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2024-11-16 06:51:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 867. [2024-11-16 06:51:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 863 states have (on average 1.0104287369640788) internal successors, (872), 864 states have internal predecessors, (872), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:51:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 875 transitions. [2024-11-16 06:51:41,611 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 875 transitions. Word has length 449 [2024-11-16 06:51:41,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:51:41,611 INFO L471 AbstractCegarLoop]: Abstraction has 867 states and 875 transitions. [2024-11-16 06:51:41,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 277 states, 277 states have (on average 3.032490974729242) internal successors, (840), 277 states have internal predecessors, (840), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:51:41,612 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 875 transitions. [2024-11-16 06:51:41,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2024-11-16 06:51:41,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:51:41,625 INFO L215 NwaCegarLoop]: trace histogram [281, 280, 274, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:51:41,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 06:51:41,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:51:41,825 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:51:41,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:51:41,826 INFO L85 PathProgramCache]: Analyzing trace with hash 861150534, now seen corresponding path program 9 times [2024-11-16 06:51:41,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:51:41,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110157558] [2024-11-16 06:51:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:51:41,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:51:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat